keyword
MENU ▼
Read by QxMD icon Read
search

Target delivery

keyword
https://www.readbyqxmd.com/read/28107705/incorporation-of-antimicrobial-peptides-in-nanostructured-lipid-membrane-mimetic-bilayer-cubosomes
#1
Thomas G Meikle, Alexandru Zabara, Lynne J Waddington, Frances Separovic, Calum J Drummond, Charlotte E Conn
The inverse bicontinuous lipidic cubic phase offers a simple and robust membrane mimetic with the ability to encapsulate peptides, potentially increasing bioavailability, while also offering a platform from which functionalized, targeted nanoparticles can be developed. Herein we have investigated the use of a number of cubic phase nanoparticle systems with encapsulated antimicrobial peptides gramicidin A', melittin, and alamethicin. The optimal peptide loading ranges, over which cubic symmetry was retained, were determined using small angle X-ray scattering...
January 8, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28107661/targeting-nf-kb-signaling-with-polymeric-hybrid-micelles-that-co-deliver-sirna-and-dexamethasone-for-arthritis-therapy
#2
Qin Wang, Hao Jiang, Yan Li, Wenfei Chen, Hanmei Li, Ke Peng, Zhirong Zhang, Xun Sun
The transcription factor NF-kB plays a pivotal role in the pathogenesis of rheumatoid arthritis. Here we attempt to slow arthritis progression by co-delivering the glucocorticoid dexamethasone (Dex) and small-interfering RNA targeting NF-kB p65 using our previously developed polymeric hybrid micelle system. These micelles contain two similar amphiphilic copolymers: polycaprolactone-polyethylenimine (PCL-PEI) and polycaprolactone-polyethyleneglycol (PCL-PEG). The hybrid micelles loaded with Dex and siRNA effectively inhibited NF-kB signaling in murine macrophages more efficiently than micelles containing either Dex or siRNA on their own...
January 11, 2017: Biomaterials
https://www.readbyqxmd.com/read/28107660/guided-growth-of-auditory-neurons-bioactive-particles-towards-gapless-neural-electrode-interface
#3
Hao Li, Fredrik Edin, Hisamitsu Hayashi, Olafur Gudjonsson, Niklas Danckwardt-Lillieström, Håkan Engqvist, Helge Rask-Andersen, Wei Xia
Cochlear implant (CI) is a successful device to restore hearing. Despite continuous development, frequency discrimination is poor in CI users due to an anatomical gap between the auditory neurons and CI electrode causing current spread and unspecific neural stimulation. One strategy to close this anatomical gap is guiding the growth of neuron dendrites closer to CI electrodes through targeted slow release of neurotrophins. Biodegradable calcium phosphate hollow nanospheres (CPHSs) were produced and their capacity for uptake and release of neurotrophins investigated using (125)I-conjugated glia cell line-derived neurotrophic factor (GDNF)...
December 23, 2016: Biomaterials
https://www.readbyqxmd.com/read/28107619/peptide-based-stealth-nanoparticles-for-targeted-and-ph-triggered-delivery
#4
Alessandro Ranalli, Melissa Santi, Luigi Capriotti, Valerio Voliani, David Porciani, Fabio Beltram, Giovanni Signore
Stealth agents are extensively investigated as means to prolong nanostructures residence time in the bloodstream by avoiding uptake by the reticuloendothelial system. Unfortunately, commonly used agents such as poly(ethylene glycol) can adversely impact on targeting efficiency and promote immune reaction by the host organism. Therefore, there is an increasing interest in developing biocompatible, non-PEGylated organic nanostructures able to perform targeted delivery, to increase the efficacy of liposomal technology...
January 20, 2017: Bioconjugate Chemistry
https://www.readbyqxmd.com/read/28107023/doxorubicin-delivery-into-tumor-cells-by-stable-cavitation-without-contrast-agents
#5
Kamel Chettab, Jean-Louis Mestas, Maxime Lafond, Djamel Eddine Saadna, Cyril Lafon, Charles Dumontet
Doxorubicin, alone or in combination with other anticancer agents, is one of the most widely used chemotherapeutic agents and is administered in a wide range of cancers. However, the use of doxorubicin is limited due to its potential serious adverse reactions. Previous studies have established the ability of high intensity focused ultrasound (HIFU) in combination with various contrast agents to increase intracellular doxorubicin delivery in a targeted and noninvasive manner. In this study, we developed a new sonoporation device generating and monitoring acoustic cavitation bubbles without any addition of contrast agents...
January 20, 2017: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/28106955/cypate-mediated-thermosensitive-nanoliposome-for-tumor-imaging-and-photothermal-triggered-drug-release
#6
Zhihao Han, Liwei Lv, Yi Ma, Zhaohui Wang, Yuxi Liu, Min Zhang, Siwen Li, Yueqing Gu
It is an emerging focus to explore controlled release drug delivery systems for simultaneous cancer imaging and therapy. Herein, we synthesized a photothermal sensitive multifunctional nano-liposome drug delivery system, with doxorubicin wrapped in the hydropholic layer as the therapeutical agent and cypate doped in the hydrophobic layer as the diagnostic agent. A series of in vitro and in vivo characterization demonstrated the stability of synthesized liposome, as the DL% was 9 ± 1.5 and the EE% was 82.7 ± 2...
January 20, 2017: Journal of Biophotonics
https://www.readbyqxmd.com/read/28106589/from-entry-to-practice-to-advanced-nurse-practitioner-the-progression-of-competencies-and-how-they-assist-in-delivery-of-ehealth-programs-for-healthy-ageing
#7
Daragh Rodger, Pamela Hussey
Most of the health issues encountered in persons of older age are the result of one or more chronic diseases. The evidence base reports that chronic diseases can be prevented or delayed by engaging in healthy behaviors. Education provides a cost effective intervention on both economic grounds in addition to delivery of optimal patient outcomes. Information and Communication Technology (ICT) increasingly is viewed as a critical utility in eHealth delivery, providing scope for expanding online education facilities for older persons...
2017: Studies in Health Technology and Informatics
https://www.readbyqxmd.com/read/28106372/folate-engineered-microvesicles-for-enhanced-target-and-synergistic-therapy-towards-breast-cancer
#8
Lian Zhu, Di Dong, Zi-Li Yu, Yi-Fang Zhao, Dai-Wen Pang, Zhi-Ling Zhang
As an ideal nanovector candidate, microvesicles (MVs) have been gradually utilized for packaging kinds of functional molecules for effective tumor diagnosis and therapy; however, the deficiency of their tumor targeting influenced their therapy efficacy. Through a facile phospholipid substitution strategy, MVs based drug delivery system (DDS) was apparently endowed with high tumor targeting towards breast cancer thanks to the modified folate onto the membrane of MVs, simultaneously possessed of synergistic anti-tumor effect, and in vivo tumor imaging attributed to the SA-QDs labeling...
January 20, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28106163/synergistically-enhanced-selective-intracellular-uptake-of-anticancer-drug-carrier-comprising-folic-acid-conjugated-hydrogels-containing-magnetite-nanoparticles
#9
Haneul Kim, Ara Jo, Seulgi Baek, Daeun Lim, Soon-Yong Park, Soo Kyung Cho, Jin Woong Chung, Jinhwan Yoon
Targeted drug delivery has long been extensively researched since drug delivery and release at the diseased site with minimum dosage realizes the effective therapy without adverse side effects. In this work, to achieve enhanced intracellular uptake of anticancer drug carriers for efficient chemo-therapy, we have designed targeted multifunctional anticancer drug carrier hydrogels. Temperature-responsive poly(N-isopropylacrylamide) (PNIPAm) hydrogel core containing superparamagnetic magnetite nanoparticles (MNP) were prepared using precipitation polymerization, and further polymerized with amine-functionalized copolymer shell to facilitate the conjugation of targeting ligand...
January 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28106077/mesenchymal-stem-cell-transplantation-in-tight-skin-mice-identifies-mir-151-5p-as-a-therapeutic-target-for-systemic-sclerosis
#10
Chider Chen, Dandan Wang, Alireza Moshaverinia, Dawei Liu, Xiaoxing Kou, Wenjing Yu, Ruili Yang, Lingyun Sun, Songtao Shi
Systemic sclerosis (SSc), an autoimmune disease, may cause significant osteopenia due to activation of the IL4Rα/mTOR pathway. Mesenchymal stem cell transplantation (MSCT) can ameliorate immune disorders in SSc via inducing immune tolerance. However, it is unknown whether MSCT rescues osteopenia phenotype in SSc. Here we show that MSCT can effectively ameliorate osteopenia in SSc mice by rescuing impaired lineage differentiation of the recipient bone marrow MSCs. Mechanistically, we show that donor MSCs transfer miR-151-5p to the recipient bone marrow MSCs in SSc mice to inhibit IL4Rα expression, thus downregulating mTOR pathway activation to enhance osteogenic differentiation and reduce adipogenic differentiation...
January 20, 2017: Cell Research
https://www.readbyqxmd.com/read/28105728/invention-of-stimulus-responsive-peptide-bond-cleaving-residue-spr-and-its-application-to-chemical-biology-tools
#11
Akira Shigenaga, Jun Yamamoto, Taiki Kohiki, Tsubasa Inokuma, Akira Otaka
Elucidation of biological functions of peptides and proteins is essential for understanding peptide/protein-related biological events and developing drugs. Caged peptides and proteins that release a parent active peptide/protein by photo-irradiation have successfully been employed to elucidate the functions. Whereas the usual caged peptide/protein enables conversion of an inactive form to an active form (OFF-to-ON conversion) by photo-induced deprotection, photo-triggered main chain cleavage is reported to be applicable to ON-to-OFF conversion...
January 19, 2017: Journal of Peptide Science: An Official Publication of the European Peptide Society
https://www.readbyqxmd.com/read/28105473/recent-applications-of-the-combination-of-mesoporous-silica-nanoparticles-with-nucleic-acids-development-of-bioresponsive-devices-carriers-and-sensors
#12
REVIEW
Rafael R Castillo, Alejandro Baeza, María Vallet-Regí
The discovery and control of the biological roles mediated by nucleic acids have turned them into a powerful tool for the development of advanced biotechnological materials. Such is the importance of these gene-keeping biomacromolecules that even nanomaterials have succumbed to the claimed benefits of DNA and RNA. Currently, there could be found in the literature a practically intractable number of examples reporting the use of combination of nanoparticles with nucleic acids, so boundaries are demanded. Following this premise, this review will only cover the most recent and powerful strategies developed to exploit the possibilities of nucleic acids as biotechnological materials when in combination with mesoporous silica nanoparticles...
January 20, 2017: Biomaterials Science
https://www.readbyqxmd.com/read/28105197/mitochondria-targeting-nano-agents-in-cancer-therapeutics
#13
Xiao-Ying Zhang, Pei-Ying Zhang
Mitochondria have emerged as noteworthy therapeutic targets as their physiological functions are often altered in pathological conditions such as cancer. The electronic databases of MEDLINE, EMBASE and PubMed were searched for recent studies reporting the importance of mitochondria targeting nanoagents in cancer therapeutics. The concluding remarks of the above papers mostly confirmed the growing potential of these novel nanoagents in the area of anticancer research. Furthermore, numerous studies demonstrated the immense potential of nanocarriers in delivering mitochondria-acting compounds to their target site...
December 2016: Oncology Letters
https://www.readbyqxmd.com/read/28105163/selection-of-antitumor-displayed-peptides-for-the-specific-delivery-of-the-anticancer-drug-lactaptin
#14
Anna Andreevna Nemudraya, Elena Vladimirovna Kuligina, Alexandr Alexeevich Ilyichev, Alexandr Sergeevich Fomin, Grigory Alexandrovich Stepanov, Anna Valentinovna Savelyeva, Olga Alexandrovna Koval, Vladimir Alexandrovich Richter
It has been previously demonstrated that lactaptin, the proteolytic fragment of human milk protein κ-casein, induces the death of various cultured cancer cells. The recombinant analog of lactaptin, RL2, effectively induces the apoptosis of mouse hepatocarcinoma-1 (HA-1) tumor cells in vitro and suppress the growth of HA-1 tumors and metastases in vivo. The antitumor drug Lactaptin developed on the basis of RL2 has been successful in preclinical trials. Lactaptin shows its efficiency in relation to mouse and human cancer cells and tumors...
December 2016: Oncology Letters
https://www.readbyqxmd.com/read/28105117/mir-218-suppresses-gastric-cancer-cell-proliferation-and-invasion-via-regulation-of-angiopoietin-2
#15
Sifeng Tang, Deyou Wang, Qiwen Zhang, Leping Li
Novel targeted therapies need to be developed for gastric cancer, the third most common cancer type and the second most common cause of cancer-related mortality in China. Previous studies indicate that angiopoietin (Ang)-2 serves a role in the proliferation, migration, invasion and adhesion of malignant cells. The present study identified, using functional studies, that exogenous expression of miR-218 increased migration of NCI-87 and HGC-27 gastric cancer cells, which coincided with a reduction in the expression of Ang-2...
December 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28105110/wt1-shrna-delivery-using-transferrin-conjugated-peg-liposomes-in-an-in-vivo-model-of-melanoma
#16
Santiago Saavedra-Alonso, Pablo Zapata-Benavides, Ana Karina Chavez-Escamilla, Edgar Manilla-Muñoz, Diana Elisa Zamora-Avila, Moisés Armides Franco-Molina, Cristina Rodriguez-Padilla
The global incidence of melanoma is increasing. Mortality from melanoma is influenced primarily by metastasis in advanced stages of the disease. Current treatments are largely ineffective; thus, novel gene delivery approaches that target tumor-specific markers may be useful for the treatment of melanoma. Systemic administration of encapsulated RNA-interference plasmids targeted against tumor cells is a potential alternative therapy for cancer. Formulations of transferrin (Tf)-conjugated polyethylene glycol (PEG) liposomes loaded with short hairpin RNA (shRNA) against WT1 (Lip + RNAi + Tf), PEG liposomes loaded with shRNA against WT1 (Lip + RNAi), Tf-conjugated PEG liposomes loaded with pEGFP-N3 (Lip + GFP + Tf) and saline solution as negative control (untreated) were administered systemically to C57BL/6 mice implanted subcutaneously with a melanoma cell line...
December 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28104913/exosome-derived-micrornas-in-cancer-metabolism-possible-implications-in-cancer-diagnostics-and-therapy
#17
REVIEW
Marco Tomasetti, Wan Lee, Lory Santarelli, Jiri Neuzil
Malignant progression is greatly affected by dynamic cross-talk between stromal and cancer cells. Exosomes are secreted nanovesicles that have key roles in cell-cell communication by transferring nucleic acids and proteins to target cells and tissues. Recently, MicroRNAs (miRs) and their delivery in exosomes have been implicated in physiological and pathological processes. Tumor-delivered miRs, interacting with stromal cells in the tumor microenvironment, modulate tumor progression, angiogenesis, metastasis and immune escape...
January 20, 2017: Experimental & Molecular Medicine
https://www.readbyqxmd.com/read/28103931/developing-a-framework-to-guide-the-de-adoption-of-low-value-clinical-practices-in-acute-care-medicine-a-study-protocol
#18
Jeanna Parsons Leigh, Daniel J Niven, Jamie M Boyd, Henry T Stelfox
BACKGROUND: Healthcare systems have difficulty incorporating scientific evidence into clinical practice, especially when science suggests that existing clinical practices are of low-value (e.g. ineffective or harmful to patients). While a number of lists outlining low-value practices in acute care medicine currently exist, less is known about how best to initiate and sustain the removal of low-value clinical practices (i.e. de-adoption). This study will develop a comprehensive list of barriers and facilitators to the de-adoption of low-value clinical practices in acute care facilities to inform the development of a framework to guide the de-adoption process...
January 19, 2017: BMC Health Services Research
https://www.readbyqxmd.com/read/28103895/feasibility-of-antiretroviral-treatment-monitoring-in-the-era-of-decentralized-hiv-care-a-systematic-review
#19
REVIEW
Minh D Pham, Lorena Romero, Bruce Parnell, David A Anderson, Suzanne M Crowe, Stanley Luchters
BACKGROUND: Regular monitoring of HIV patients who are receiving antiretroviral therapy (ART) is required to ensure patient benefits and the long-term effectiveness and sustainability of ART programs. Prompted by WHO recommendations for expansion and decentralization of HIV treatment and care in low and middle income countries, we conducted a systematic review to assess the feasibility of treatment monitoring in these settings. METHODS: A comprehensive search strategy was developed using a combination of MeSH and free text terms relevant to HIV treatment and care, health service delivery, health service accessibility, decentralization and other relevant terms...
January 19, 2017: AIDS Research and Therapy
https://www.readbyqxmd.com/read/28103846/a-description-of-interventions-promoting-healthier-ready-to-eat-meals-to-eat-in-to-take-away-or-to-be-delivered-sold-by-specific-food-outlets-in-england-a-systematic-mapping-and-evidence-synthesis
#20
Frances C Hillier-Brown, Carolyn D Summerbell, Helen J Moore, Wendy L Wrieden, Jean Adams, Charles Abraham, Ashley Adamson, Vera Araújo-Soares, Martin White, Amelia A Lake
BACKGROUND: Ready-to-eat meals (to eat in, to take away or to be delivered) sold by food outlets are often more energy dense and nutrient poor compared with meals prepared at home, making them a reasonable target for public health intervention. The aim of the research presented in this paper was to systematically identify and describe interventions to promote healthier ready-to-eat meals (to eat in, to take away, or to be delivered) sold by specific food outlets in England. METHODS: A systematic search and sift of the literature, followed by evidence mapping of relevant interventions, was conducted...
January 19, 2017: BMC Public Health
keyword
keyword
45630
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"