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Expert Opinion on Drug Delivery

Helen Saunders, Laura de la Fuente Bitaine, Chriss Eftekhar, Colin M Howles, Johanna Glaser, Tina Hoja, Pablo Arriagada
OBJECTIVE: The main objective of this user experience testing study was to evaluate the impact of human factors on the use of a disposable pen containing follitropin alfa by patients and nurses with special focus on the convenience, safety and ease of use, in different types of stimulation protocols. METHODS: Infertile women trying to conceive, and specialist nurses were recruited across 6 European countries. In total 18 patients and 19 nurses took part in the testing, which included both nurse-patient pairings and in-depth interviews...
March 29, 2018: Expert Opinion on Drug Delivery
E Millart, S Lesieur, V Faivre
Introduction The development of multifunctional drug carriers provides many opportunities in the field of drug delivery. Among them, carriers loaded with both drug and superparamagnetic iron oxide nanoparticles would allow the combination of chemotherapy with the possibility of monitoring or controlling the distribution of the nanocarrier in the body, triggering drug release and/or applying a synergistic hyperthermia treatment. Areas covered The present review covers biocompatible lipid-based nanotechnologies that have been employed to co-encapsulate drug and iron oxide...
March 15, 2018: Expert Opinion on Drug Delivery
Gunjan Vasant Bonde, Sarita Kumari Yadav, Sheetal Chauhan, Pooja Mittal, Gufran Ajmal, Sathish Thokala, Brahmeshwar Mishra
Breast cancer stands the second prominent cause of death among women. For its efficient treatment, Lapatinib (LAPA) was developed as a selective tyrosine kinase inhibitor of receptors, overexpressed by breast cancer cells. Various explored delivery strategies for LAPA indicated its controlled release with enhanced aqueous solubility, improved bioavailability, decreased plasma protein binding, reduced dose and toxicity to the other organs with maximized clinical efficacy, compared to its marketed tablet formulation...
March 14, 2018: Expert Opinion on Drug Delivery
Ziyu Zhao, Zhengwei Huang, Xuejuan Zhang, Ying Huang, Yingtong Cui, Cheng Ma, Guanlin Wang, Tim Freeman, Xiang-Yun Lu, Xin Pan, Chuanbin Wu
BACKGROUND: The hygroscopicity of raffinose carrier for dry powder inhaler (DPI) was the main obstacle for its further application. Hygroscopicity-induced agglomeration would cause deterioration of aerosolization performance of raffinose, undermining the delivery efficiency. METHODS: Cyclodextrin-raffinose binary carriers (CRBCs) were produced by spray-drying so as to surmount the above issue. Physicochemical attributes and formation mechanism of CRBCs were explored in detail...
March 13, 2018: Expert Opinion on Drug Delivery
Lorenzo Vannozzi, Veronica Iacovacci, Arianna Menciassi, Leonardo Ricotti
INTRODUCTION: Traditional drug release systems normally rely on a passive delivery of therapeutic compounds, which can be partially programmed, prior to injection or implantation, through variations in the material composition. With this strategy, the drug release kinetics cannot be remotely modified and thus adapted to changing therapeutic needs. To overcome this issue, drug delivery systems able to respond to external stimuli are highly desirable, as they allow a high level of temporal and spatial control over drug release kinetics, in an operator-dependent fashion...
March 9, 2018: Expert Opinion on Drug Delivery
Joan Schertz, Hilary Worton
Background Owing to the wide-ranging role nurses have in supporting patients undergoing fertility treatment, we recorded the learning/teaching expectations and experiences of nurses using a redesigned fertility pen injector. Methods This was a multicentre, simulated-use study, using unbranded placebo-filled pens. Before teaching patients, nurses were given free choice to rank the importance of the device attributes and predict the level of patient anxiety. Nurses taught 2-5 patients how to prepare the device, inject the dose and complete an incomplete dose...
March 9, 2018: Expert Opinion on Drug Delivery
Yuqi Zhang, Jicheng Yu, Di Wen, Guojun Chen, Zhen Gu
No abstract text is available yet for this article.
March 9, 2018: Expert Opinion on Drug Delivery
João Pedro Martins, Giulia Torrieri, Hélder A Santos
Nanoparticles are anticipated to overcome persistent challenges in efficient drug delivery, but the limitations associated with conventional methods of preparation are resulting in slow translation from research to clinical applications. Due to their enormous potential, microfluidic technologies have emerged as an advanced approach for the development of drug delivery systems with well-defined physicochemical characteristics and in a reproducible manner. Areas covered: This review provides an overview of microfluidic devices and materials used for their manufacturing, together with the flow patterns and regimes commonly used for nanoparticle preparation...
March 6, 2018: Expert Opinion on Drug Delivery
Antonella Obinu, Elisabetta Gavini, Giovanna Rassu, Marcello Maestri, Maria Cristina Bonferoni, Paolo Giunchedi
Lymphatic vessels are the preferential route of most solid tumors to spread their metastases in the body. The onset of metastatic nests in draining lymph nodes (LNs) are a significant indicator of cancer progression and a dismaying sign of worsen staging. Therefore, the individuation and elimination of cancer cells within the lymphatic system (LS) are an important goal. Nevertheless, the targeting of the LS with traditional contrast agents and/or chemotherapeutics is difficult, due to its anatomical structure...
March 5, 2018: Expert Opinion on Drug Delivery
Smrithi Padmakumar, Neha Parayath, Fraser Leslie, Shantikumar V Nair, Deepthy Menon, Mansoor M Amiji
Epithelial ovarian cancer (EOC) remains to be the most lethal of all gynecological malignancies mainly due to its asymptomatic nature. The late stages of EOC are manifested with predominant metastases confined to the peritoneal cavity. Although there has been a substantial progress in the treatment avenue with different therapeutic interventions, the overall survival rate of EOC patients remain poor due to relapse and drug resistance. Areas covered: The pharmacokinetic advantages offered by intraperitoneal (IP) chemotherapy due to the peritoneal-plasma barrier can be potentially exploited for EOC relapse treatment...
February 28, 2018: Expert Opinion on Drug Delivery
M Peppi, A Marie, C Belline, J T Borenstein
No abstract text is available yet for this article.
February 26, 2018: Expert Opinion on Drug Delivery
Zahraa S Al-Ahmady
A big challenge in the development of therapeutics for central nervous system (CNS) disorders, is achieving sufficient translocation through blood-brain interface named the blood-brain barrier (BBB). Until recently BBB has been considered a substantial hindrance for the penetration of blood-borne molecules including drugs to the CNS. However, recent research findings have proven that the nature of BBB is much more complex and dynamic and is altered in several neurological conditions. This complexity encourages revisiting drug delivery strategies to the CNS as this can give a wide range of opportunities for CNS drug development...
February 21, 2018: Expert Opinion on Drug Delivery
Viral Patel, Om Prakash Sharma, Tejal Mehta
Skin is an important route of drug delivery for the treatment of various dermatological conditions. The advent of nanotechnology is paving the roadmaps for topical drug delivery by providing sustained release as well as maintaining a localized effect, outweighing the toxicity concern. Area Covered: This review highlighted the morphology of skin, its barrier nature as well as drug penetration pathways after topical application of formulations. The existing methods to improve topical drug delivery, by infringing or permeating the skin barriers, are discussed...
February 21, 2018: Expert Opinion on Drug Delivery
Gregor Anderson, Neil Johnson, Aruni Mulgirigama, Bhumika Aggarwal
Spacers offer a multitude of benefits by reducing the requirement to coordinate inhalation with actuation and improving inhaler technique in patients using a pressurized metered dose inhaler (pMDI). Spacers improve drug targeting by retaining within the spacer large particles normally deposited in the oropharynx, and by creating a prolonged aerosol cloud of fine particles to give the user increased time to inhale after actuation. This is particularly important in young children and the elderly to effectively deliver medication to the airways...
February 8, 2018: Expert Opinion on Drug Delivery
Luigi Battaglia, Pier Paolo Panciani, Elisabetta Muntoni, Maria Teresa Capucchio, Elena Biasibetti, Pasquale De Bonis, Silvia Mioletti, Marco Fontanella, Shankar Swaminathan
The blood brain barrier is a functional barrier allowing the entry into the brain of only essential nutrients, excluding other molecules. Its structure, although essential to keep the harmful entities out, is also a major roadblock for pharmacological treatment of brain diseases. Several alternative invasive drug delivery approaches, such as transcranial drug delivery and disruption of blood brain barrier have been explored, with limited success and several challenges. Intranasal delivery is a non-invasive methodology, which bypasses the systemic circulation, and, through the intra- and extra- neuronal pathways, provides direct brain drug delivery...
April 2018: Expert Opinion on Drug Delivery
Peter Noymer, Assaf Shaked, Kay Newell
BACKGROUND: SMT-101, a novel, proprietary, water-resistant wearable infusion pump prefilled with a preset dosage of treprostinil, was designed to address many of the administration-related shortcomings of existing parenteral therapy for pulmonary arterial hypertension (PAH). The objective of the human factors (HF) program was to demonstrate that the SMT-101 system is safe and effective when used by patients with PAH, their caregivers, or healthcare providers. METHODS: The HF program for SMT-101 consisted of 8 studies (148 participants): an ethnographic study, an online survey of patients with PAH, 4 formative studies, a study of the instructions for use (IFU), and a summative study for validation...
April 2018: Expert Opinion on Drug Delivery
Zhen Wang, Zimei Wu, Jianping Liu, Wenli Zhang
Efficient delivery of drugs by nanoparticles deep into solid tumors is the precondition of valid cancer therapy. Despite profound understanding of the delivery of spherical nanoparticles into solid tumor attained, insufficient attention was paid to anisotropic particles. Actually, owing to their structural asymmetry, some non-spherical particles exhibit significant advantages over their spherical counterparts. Areas covered: This review will focus on particles with different shapes (discoidal particle, nanorod, filamentous particle, single-walled carbon nanotube) and the influence of their morphological characteristics (size, aspect ratio, rigidity) on the process of drug delivery to solid tumor in view of systemic circulation, transport from circulation system to tumor tissue, intratumoral transport and uptake by tumor cells, on the basis of introduction of challenges for drug delivery to solid tumor...
April 2018: Expert Opinion on Drug Delivery
Hanan Al-Lawati, Hamidreza Montazeri Aliabadi, Behzad Sharif Makhmalzadeh, Afsaneh Lavasanifar
Immunosuppression is the mainstay therapy in organ transplantation and autoimmune diseases. The effective clinical application of immunosuppressive agents has suffered from the emergence of systemic immunosuppression and/or individual drug side effects. Nanotechnology approaches may be used to modify the mentioned shortcomings by enhancing the delivery of immunosuppressants to target cells of the immune system, thus reducing the required dose for function, and/or reducing drug distribution to non-target tissues...
April 2018: Expert Opinion on Drug Delivery
Yasmin Thabet, Marta Slavkova, Jörg Breitkreutz
Child-appropriate drug formulations are mandatory for an efficient and safe drug therapy in children. Since the implementation of supportive legislations development of novel drug formulations has significantly been enforced despite the fact that children are a heterogeneous group of patients with varying needs according to age, maturation and disease. Areas covered: In this review, recent advances and current strategies are evaluated how to overcome the specific hurdles in pediatric drug development. For cardiovascular diseases as an example, EMA's decisions on pediatric investigation plans (PIPs) have been evaluated...
March 2018: Expert Opinion on Drug Delivery
Rahul Mittal, Amit P Patel, Vasanti M Jhaveri, Sae-In S Kay, Luca H Debs, James M Parrish, Debbie R Pan, Desiree Nguyen, Jeenu Mittal, Rahul Dev Jayant
The emergent field of nanoparticles has presented a wealth of opportunities for improving the treatment of human diseases. Recent advances have allowed for promising developments in drug delivery, diagnostics, and therapeutics. Modified delivery systems allow improved drug delivery over traditional pH, microbe, or receptor dependent models, while antibody association allows for more advanced imaging modalities. Nanoparticles have potential clinical application in the field of gastroenterology as they offer several advantages compared to the conventional treatment systems including target drug delivery, enhanced treatment efficacy, and reduced side effects...
March 2018: Expert Opinion on Drug Delivery
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