Drug Delivery Systems

药物输送系统
  • 文章类型: Journal Article
    聚焦超声(FUS)是一种强大的新兴工具,非电离靶向破坏肿瘤。在过去的二十年中,越来越多的临床前和临床文献支持FUS通过各种方式增加对肿瘤的新生免疫反应并增强癌症免疫疗法(例如检查点抑制剂)的能力。包括免疫调节和药物递送。随着这一领域的迅速发展和大量FUS免疫治疗临床试验现已在全球范围内展开,有必要简化和标准化整个领域的免疫学分析方法。最近,聚焦超声基金会和癌症研究所合作召集了超过85位领导人组成的小组,讨论FUS和免疫肿瘤学的关系.本文记录的指南是根据本次讨论中提出的建议而汇编的,强调迫切需要提高该领域特有的免疫分析方法和标准化方案的可及性。这些指南是为FUS免疫肿瘤学领域的现有利益相关者或新进入该领域的利益相关者指定的,为收集提供指导,storage,在FUS免疫疗法研究的背景下,对组织或血液样本进行免疫分析,并根据迄今为止在该领域获得的集体经验,为这些方法的标准化部署提供模板。这些指南是与肿瘤无关的,并提供基于证据的,基于共识的组织和血液标本临床前和临床免疫分析建议。
    Focused ultrasound (FUS) is a powerful emerging tool for non-invasive, non-ionizing targeted destruction of tumors. The last two decades have seen a growing body of preclinical and clinical literature supporting the capacity of FUS to increase nascent immune responses to tumors and to potentiate cancer immunotherapies (e.g. checkpoint inhibitors) through a variety of means, including immune modulation and drug delivery. With the rapid acceleration of this field and a multitude of FUS immunotherapy clinical trials having now been deployed worldwide, there is a need to streamline and standardize the methodology for immunological analyses field-wide. Recently, the Focused Ultrasound Foundation and Cancer Research Institute partnered to convene a group of over 85 leaders to discuss the nexus of FUS and immuno-oncology. The guidelines documented herein were assembled in response to recommendations that emerged from this discussion, emphasizing the urgent need for heightened accessibility of immune analysis methods and standardized protocols unique to the field. These guidelines are designated for existing stakeholders in the FUS immuno-oncology domain or those newly entering the field, to provide guidance on collection, storage, and immunological profiling of tissue or blood specimens in the context of FUS immunotherapy studies, and additionally offer templates for standardized deployment of these methods based on collective experience gained within the field to date. These guidelines are tumor-agnostic and provide evidence-based, consensus-based recommendations for both preclinical and clinical immune analysis of tissue and blood specimens.
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  • 文章类型: Journal Article
    脂质体是纳米尺寸的基于脂质的囊泡,其药物递送能力被广泛研究。与标准载体相比,它们表现出更好的特性,如改善的位点靶向和药物释放,保护药物免受降解和清除,和较低的毒副作用。目前,科学文献中有丰富的关于脂质体系统的研究,EMA和FDA已授权14种脂质体产品投放市场,许多其他产品已获得国家机构的批准。尽管在过去的二十年中,对纳米器件和纳米医学的兴趣稳步增加,但由于纳米系统表征的内在复杂性,规范和标准化其开发和质量控制的所有阶段的文献的发展仍然存在重大不足。已经提出了许多讨论纳米系统(脂质和非脂质)研究指南的通用文件(类型1),而缺乏稳健和标准化的方法(类型2文件)。因此,广泛的不同技术,正在使用方法和方法,产生质量可变且难以相互比较的结果。此外,此类文档通常会更新和重写,从而使主题更加复杂。在这种情况下,这项工作的目的集中在弥合脂质体表征中的差距:本文报道了适用于脂质体表征的最新标准化方法(具有相应的2型文献),并以简短实用的方式进行了修订,重点是为读者提供最新技术的实用背景。特别是,本文将重点介绍为评估脂质体市场批准所需的主要关键质量属性(CQAs)而开发的方法。
    Liposomes are nano-sized lipid-based vesicles widely studied for their drug delivery capabilities. Compared to standard carries they exhibit better properties such as improved site-targeting and drug release, protection of drugs from degradation and clearance, and lower toxic side effects. At present, scientific literature is rich of studies regarding liposomes-based systems, while 14 types of liposomal products have been authorized to the market by EMA and FDA and many others have been approved by national agencies. Although the interest in nanodevices and nanomedicine has steadily increased in the last two decades the development of documentation regulating and standardizing all the phases of their development and quality control still suffers from major inadequacy due to the intrinsic complexity of nano-systems characterization. Many generic documents (Type 1) discussing guidelines for the study of nano-systems (lipidic and not) have been proposed while there is a lack of robust and standardized methods (Type 2 documents). As a result, a widespread of different techniques, approaches and methodologies are being used, generating results of variable quality and hard to compare with each other. Additionally, such documents are often subject to updates and rewriting further complicating the topic. Within this context the aim of this work is focused on bridging the gap in liposome characterization: the most recent standardized methodologies suitable for liposomes characterization are here reported (with the corresponding Type 2 documents) and revised in a short and pragmatical way focused on providing the reader with a practical background of the state of the art. In particular, this paper will put the accent on the methodologies developed to evaluate the main critical quality attributes (CQAs) necessary for liposomes market approval.
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  • 文章类型: Systematic Review
    乳腺癌是西班牙女性癌症的主要原因,其年发病率正在迅速增加。多亏了筛选程序,近90%的乳腺癌病例是在早期和潜在治愈阶段发现的,尽管COVID-19大流行可能影响了这些数字(尚未量化)。近年来,局部和全身治疗越来越多地由新的诊断工具指导,这些工具改善了毒性和临床获益之间的平衡.新的治疗策略,比如免疫疗法,靶向药物,和抗体-药物偶联物也改善了一些患者亚组的结局.本临床实践指南基于对相关研究的系统回顾和GEICAM专家的共识,SOLTI,和SEOM。
    Breast cancer is the leading cause of cancer in women in Spain and its annual incidence is rapidly increasing. Thanks to the screening programs in place, nearly 90% of breast cancer cases are detected in early and potentially curable stages, despite the COVID-19 pandemic possibly having impacted these numbers (not yet quantified). In recent years, locoregional and systemic therapies are increasingly being directed by new diagnostic tools that have improved the balance between toxicity and clinical benefit. New therapeutic strategies, such as immunotherapy, targeted drugs, and antibody-drug conjugates have also improved outcomes in some patient subgroups. This clinical practice guideline is based on a systematic review of relevant studies and on the consensus of experts from GEICAM, SOLTI, and SEOM.
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  • 文章类型: Review
    植入医疗设备的患者越来越多地接受高压氧治疗(HBOT),而将其中一些装置暴露于高压环境中的安全性以前还没有被研究过。在HBOT的背景下,缺乏关于植入的神经设备(例如神经刺激器和鞘内给药(IDD)泵)的管理的证据。然而,这些设备可能会有独特的风险;例如,在HBOT的压缩和减压阶段,植入式IDD泵的储库中的空置空间可能会改变压力和体积,导致设备损坏或功能失调。我们介绍了一名27岁的脑瘫妇女,该妇女因HBOT而被转诊,以治疗在鞘内巴氯芬泵的先前植入部位从破裂的腹部伤口培养出的坏死性软组织感染。最终与患者及其家人合作选择了HBOT方案,但由于缺乏证据表明植入的IDD泵可以安全地承受高压暴露,因此未进行治疗.在这次审查中,我们之前已经综合了制造商关于植入神经装置管理的建议,during,并在HBOT之后为未来的决策提供信息。在这些建议中,我们强调,在HBOT治疗期间应关闭神经刺激器,并在每次治疗前重新填充植入式泵,以最大限度地减少空储库空间.
    Patients with implanted medical devices are increasingly referred for hyperbaric oxygen therapy (HBOT), and the safety of exposing some of these devices to hyperbaric environments has not previously been explored. There is a paucity of evidence surrounding the management of implanted neurological devices such as neurostimulators and intrathecal drug delivery (IDD) pumps in the context of HBOT. However, these devices can be expected to harbor unique risks; for example, vacant space in the reservoir of an implanted IDD pump may change in pressure and volume during the compression and decompression phases of HBOT, resulting in a damaged or dysfunctional device. We present the case of a 27-year-old woman with cerebral palsy referred for HBOT to manage a necrotizing soft tissue infection cultured from a dehiscent abdominal wound at the previous implantation site of an intrathecal baclofen pump. An HBOT protocol was ultimately chosen in partnership with the patient and her family, but treatment was not performed due to a paucity of evidence that the implanted IDD pump could safely withstand hyperbaric exposure. In this review, we have synthesized manufacturer recommendations regarding the management of implanted neurological devices before, during, and after HBOT to inform future decision-making in this setting. Among these recommendations, we highlight that neurostimulators should be switched off for the duration of HBOT and implanted pumps should be refilled prior to each treatment session to minimize empty reservoir space.
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  • 文章类型: Journal Article
    当囊泡生产过程被优化时,脂囊泡可以提供皮肤药物吸收的成本有效的增强。设计理想的囊泡是一个重要的挑战,因为它们的属性和特征是相关的,因为一个的变化会影响另一个。这里,我们回顾了主要组成部分,常用的制备和表征方法,以及导致用于透皮药物递送目的的高效囊泡的关键特性。我们站在大小,变形程度和载药量,作为最重要的囊泡特征决定了药物的进一步透皮吸收。对这项技术的兴趣正在增加,正如关于该主题的出版物的指数增长所证明的那样。尽管长期保存和可扩展性问题限制了脂质囊泡产品的商业化,冷冻干燥和现代升级方法克服了这些困难,从而预测这些技术在市场和临床实践中的更高应用。
    Lipid vesicles can provide a cost-effective enhancement of skin drug absorption when vesicle production process is optimised. It is an important challenge to design the ideal vesicle, since their properties and features are related, as changes in one affect the others. Here, we review the main components, preparation and characterization methods commonly used, and the key properties that lead to highly efficient vesicles for transdermal drug delivery purposes. We stand by size, deformability degree and drug loading, as the most important vesicle features that determine the further transdermal drug absorption. The interest in this technology is increasing, as demonstrated by the exponential growth of publications on the topic. Although long-term preservation and scalability issues have limited the commercialization of lipid vesicle products, freeze-drying and modern escalation methods overcome these difficulties, thus predicting a higher use of these technologies in the market and clinical practice.
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  • 文章类型: Journal Article
    儿童保育中心和学校的食物过敏管理是一个有争议的话题,为此需要循证指导。在建议评估分级之后,发展,和评估方法,我们进行了系统的文献综述,对儿童保育中心和学校中用于管理食物过敏的选定干预措施的预期健康影响;我们收集了有关费用的数据,可行性,可接受性,以及选定干预措施对健康公平的影响;我们制定了以下有条件的建议:我们建议儿童保育中心和学校实施过敏培训和行动计划;我们建议他们使用肾上腺素(肾上腺素)治疗可疑的过敏反应;我们建议他们储存未分配的肾上腺素自动注射器,而不是要求学生提供他们自己的个人自动注射器存放在现场供指定的学校使用;我们建议他们不要实施全现场的食品禁令(例如,“无坚果”学校)或过敏原禁区(例如,“无牛奶”表),除非在本文件中确定的特殊情况下。由于现有证据的质量较低,建议被标记为“有条件的”。需要更多的研究来确定哪些干预措施可能是最有益的。政策制定者可能需要调整建议以适应当地情况。
    Food allergy management in child care centers and schools is a controversial topic, for which evidence-based guidance is needed. Following the Grading of Recommendations Assessment, Development, and Evaluation approach, we conducted systematic literature reviews of the anticipated health effects of selected interventions for managing food allergy in child care centers and schools; we compiled data about the costs, feasibility, acceptability, and effects on health equity of the selected interventions; and we developed the following conditional recommendations: we suggest that child care centers and schools implement allergy training and action plans; we suggest that they use epinephrine (adrenaline) to treat suspected anaphylaxis; we suggest that they stock unassigned epinephrine autoinjectors, instead of requiring students to supply their own personal autoinjectors to be stored on site for designated at-school use; and we suggest that they do not implement site-wide food prohibitions (eg, \"nut-free\" schools) or allergen-restricted zones (eg, \"milk-free\" tables), except in the special circumstances identified in this document. The recommendations are labeled \"conditional\" due to the low quality of available evidence. More research is needed to determine with greater certainty which interventions are likely to be the most beneficial. Policymakers might need to adapt the recommendations to fit local circumstances.
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  • 文章类型: Journal Article
    目的:为了进入磁共振成像(MRI)扫描仪,神经调节设备的发展一直是理解局限性之一,工程修改,以及在社区内达成共识,FDA可以安全地管理设备的标签。在神经调节的最初几十年里,它已被禁止与植入装置一起使用MRI。在这次审查中,我们采取了全面的方法来解决当前市场上的所有主要产品,以便为医生提供确定何时可以对每种类型的设备植入物进行MRI的能力。
    方法:我们为目前上市的植入式神经调节装置(包括脊髓刺激器)准备了MRI指南的叙述性综述,鞘内给药系统,周围神经刺激器,深部脑刺激器,迷走神经刺激器,和骶神经刺激器.数据来源包括通过PubMed搜索确定的相关文献,MEDLINE/OVID,Scopus,以及手动搜索已知主要文章和评论文章的参考书目,以及制造商提供的信息。
    结果:介绍了每种设备的指南和建议以及在MR环境中和周围使用的各自指南。
    结论:这是美国疼痛与神经科学学会关于市场上各种设备和MRI兼容性的第一个综合指南。
    OBJECTIVE: The evolution of neuromodulation devices in order to enter magnetic resonance imaging (MRI) scanners has been one of understanding limitations, engineering modifications, and the development of a consensus within the community in which the FDA could safely administer labeling for the devices. In the initial decades of neuromodulation, it has been contraindicated for MRI use with implanted devices. In this review, we take a comprehensive approach to address all the major products currently on the market in order to provide physicians with the ability to determine when an MRI can be performed for each type of device implant.
    METHODS: We have prepared a narrative review of MRI guidelines for currently marketed implanted neuromodulation devices including spinal cord stimulators, intrathecal drug delivery systems, peripheral nerve stimulators, deep brain stimulators, vagal nerve stimulators, and sacral nerve stimulators. Data sources included relevant literature identified through searches of PubMed, MEDLINE/OVID, SCOPUS, and manual searches of the bibliographies of known primary and review articles, as well as manufacturer-provided information.
    RESULTS: Guidelines and recommendations for each device and their respective guidelines for use in and around MR environments are presented.
    CONCLUSIONS: This is the first comprehensive guideline with regards to various devices in the market and MRI compatibility from the American Society of Pain and Neuroscience.
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  • 文章类型: Journal Article
    Drug nanocrystals offer an attractive approach for improving the solubility and dissolution rate of poorly soluble drugs which accounts for nearly 40 % newly discovered drug molecules. Both methods for manufacturing drug nanocrystals have high industrial acceptability for being simple and easy to scale which is evident from the number of approved products available in the market. Ability to modify multiple aspects of dosage form like bioavailability, release pattern and dosage form requirement along with flexibility in choosing final dosage form starting from the tablet, capsule, suspension to parenteral one, have made nanocrystal technology one of the very promising and adaptable technology for dosage form design.
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  • 文章类型: Journal Article
    Nasal drug delivery has specific challenges which are distinct from oral inhalation, alongside which it is often considered. The next generation of nasal products will be required to deliver new classes of molecule, e.g. vaccines, biologics and drugs with action in the brain or sinuses, to local and systemic therapeutic targets. Innovations and new tools/knowledge are required to design products to deliver these therapeutic agents to the right target at the right time in the right patients. We report the outcomes of an expert meeting convened to consider gaps in knowledge and unmet research needs in terms of (i) formulation and devices, (ii) meaningful product characterization and modeling, (iii) opportunities to modify absorption and clearance. Important research questions were identified in the areas of device and formulation innovation, critical quality attributes for different nasal products, development of nasal casts for drug deposition studies, improved experimental models, the use of simulations and nasal delivery in special populations. We offer these questions as a stimulus to research and suggest that they might be addressed most effectively by collaborative research endeavors.
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  • 文章类型: Consensus Development Conference
    OBJECTIVE: The Third Consensus Conference on the Safety of Intravenous Drug Delivery Systems was convened to evaluate the benefits and risks of available systems and assess ongoing threats to the safety of intravenous drug delivery.
    CONCLUSIONS: The Third Consensus Conference on the Safety of Intravenous Drug Delivery Systems convened in Chicago, Illinois in November 2018. An expert panel of healthcare providers with experience in medication quality and safety, pharmacy and nursing operations, information technology, and/or sterile compounding led the conference. An experienced audience of approximately 30 healthcare leaders provided feedback to the panel via preconference survey and during the conference. Additionally, expert speakers presented on a range of issues, including the effects of drug shortages, the impact of standards and guidelines, and patient and administrator perspectives on the importance of intravenous drug delivery safety.
    CONCLUSIONS: At the end of the conference, the expert panel concluded that manufacturer ready-to-use products remain the safest intravenous drug delivery system due to their many benefits and low overall risk profile. The panel identified various ongoing threats to the safety of intravenous drug delivery, with major concerns including the impact of drug shortages and lack of intravenous product standardization. Finally, the panel agreed upon a series of statements designed to advance the safety of intravenous drug delivery in healthcare institutions.
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