Controlled Delivery of Basal Level of insulin From Chitosan–Zinc–Insulin-Complex-Loaded Thermosensitive Copolymer

2012 ◽  
Vol 101 (3) ◽  
pp. 1079-1096 ◽  
Author(s):  
Mayura Oak ◽  
Jagdish Singh
Keyword(s):  
Controlled Delivery ◽  
Thermosensitive Copolymer

Rapid, efficient and dose-controlled delivery of liquid aerosol to pulmonary cells cultured at the air-liquid interface

Pneumologie ◽  
2011 ◽  
Vol 65 (12) ◽  
Author(s):  
M Selmansberger ◽  
AG Lenz ◽  
M Schmidmeir ◽  
O Eickelberg ◽  
T Stoeger ◽  
...  
Keyword(s):  
Liquid Interface ◽  
Controlled Delivery ◽  
Pulmonary Cells ◽  
Air Liquid Interface ◽  
Cells Cultured

Enhanced Stability and Controlled Delivery of MOF Encapsulated Vaccines and Their Immunogenic Response In Vivo

2018 ◽  
Author(s):  
Michael Luzuriaga ◽  
Raymond P. Welch ◽  
Madushani Dharmawardana ◽  
Candace Benjamin ◽  
Shaobo Li ◽  
...  
Keyword(s):  
Viral Vector ◽  
Controlled Delivery ◽  
Conformational Structure ◽  
Spectroscopy Analysis ◽  
Zeolitic Imidazolate Framework ◽  
Structural Conformation ◽  
Depth Study ◽  
Viral Nanoparticle

<div><div><div><p>Vaccines have an innate tendency to lose their structural conformation upon environmental and chemical stressors. A loss in conformation reduces the therapeutic ability to prevent the spread of a pathogen. Herein, we report an in-depth study of zeolitic imidazolate framework-8 (ZIF-8) and its ability to provide protection for a model viral vector against dena- turing conditions. The immunoassay and spectroscopy analysis together demonstrate enhanced thermal and chemical stability to the conformational structure of the encapsulated viral nanoparticle. The long-term biological activity of this virus-ZIF composite was investigated in animal models to further elucidate the integrity of the encapsulated virus, the bio-safety, and immunogenicity of the overall composite. Additionally, histological analysis found no observable tissue damage in the skin or vital organs in mice, following multiple subcutaneous administrations. This study shows that ZIF-based protein composites are strong candidates for improved preservation of proteinaceous drugs, are biocompatible, and capable of controlling the release and adsorption of drugs in vivo.</p></div></div></div>

Probiotics Slow the Growth of Pathogenic Bacteria

2019 ◽  
Vol 14 (1) ◽  
pp. 28-31 ◽  
Author(s):  
Rowles H. L.
Keyword(s):  
Growth Rate ◽  
Bacterial Infections ◽  
Pathogenic Bacteria ◽  
Diarrheal Disease ◽  
Growth Curves ◽  
Mortality Rates ◽  
Controlled Delivery ◽  
E Coli ◽  
Multiple Strains ◽  
Commercial Probiotics

Probiotics are live microorganisms, which when ingested in sufficient amounts, confer health benefits to the host by improving the gut microflora balance. The purpose of this research was to determine whether commercial probiotic products containing multitude of commensal bacteria would reduce the growth rate of pathogenic bacteria, specifically Escherichia coli and Salmonella typhimurium. Growth curves were established, and the growth rates were compared for samples of E. coli, S. typhimurium, Nature’s Bounty Controlled Delivery probiotic, Sundown Naturals Probiotic Balance probiotic, and cocultures of the pathogenic bacteria mixed with the probiotics. The findings of this research were that the commercial probiotics significantly reduced the growth rate of E. coli and S. typhimurium when combined in cocultures. Probiotics containing multiple strains may be taken prophylactically to reduce the risk of bacterial infections caused by E. coli and S. typhimurium. Probiotics could be used to reduce the high global morbidity and mortality rates of diarrheal disease.

scholarly journals Recent Advances in pH- or/and Photo-Responsive Nanovehicles

Pharmaceutics ◽  
2021 ◽  
Vol 13 (5) ◽  
pp. 725
Author(s):  
Yuseon Shin ◽  
Patihul Husni ◽  
Kioh Kang ◽  
Dayoon Lee ◽  
Sehwa Lee ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Drug Design ◽  
Solid Tumors ◽  
Tumor Targeting ◽  
Drug Delivery Systems ◽  
Delivery Systems ◽  
Controlled Delivery ◽  
Efficacy And Safety ◽  
Stimulus Responsive ◽  
External Signals

The combination of nanotechnology and chemotherapy has resulted in more effective drug design via the development of nanomaterial-based drug delivery systems (DDSs) for tumor targeting. Stimulus-responsive DDSs in response to internal or external signals can offer precisely controlled delivery of preloaded therapeutics. Among the various DDSs, the photo-triggered system improves the efficacy and safety of treatment through spatiotemporal manipulation of light. Additionally, pH-induced delivery is one of the most widely studied strategies for targeting the acidic micro-environment of solid tumors. Accordingly, in this review, we discuss representative strategies for designing DDSs using light as an exogenous signal or pH as an endogenous trigger.

One-Pot Fabrication of Hollow Porphyrinic MOF Nanoparticles with Ultrahigh Drug Loading toward Controlled Delivery and Synergistic Cancer Therapy

2021 ◽  
Vol 13 (3) ◽  
pp. 3679-3693
Author(s):  
Xin Sun ◽  
Guihua He ◽  
Chuxiao Xiong ◽  
Chenyuan Wang ◽  
Xiang Lian ◽  
...  
Keyword(s):  
Cancer Therapy ◽  
Drug Loading ◽  
Controlled Delivery ◽  
One Pot

scholarly journals Controlled Delivery of BET-PROTACs: In Vitro Evaluation of MZ1-Loaded Polymeric Antibody Conjugated Nanoparticles in Breast Cancer

Pharmaceutics ◽  
2020 ◽  
Vol 12 (10) ◽  
pp. 986
Author(s):  
Francisco J. Cimas ◽  
Enrique Niza ◽  
Alberto Juan ◽  
María del Mar Noblejas-López ◽  
Iván Bravo ◽  
...  
Keyword(s):  
Polymeric Nanoparticles ◽  
Controlled Delivery ◽  
New Family ◽  
Bet Inhibitors ◽  
Release Studies ◽  
Bromodomain Proteins ◽  
Therapeutic Properties ◽  
Tumoral Cells ◽  
Efficacy Profile

Bromo and extraterminal domain (BET) inhibitors-PROteolysis TArgeting Chimera (BETi-PROTAC) is a new family of compounds that induce proteasomal degradation through the ubiquitination of the tagged to BET inhibitors Bromodomain proteins, BRD2 and BRD. The encapsulation and controlled release of BET-PROTACs through their vectorization with antibodies, like trastuzumab, could facilitate their pharmacokinetic and efficacy profile. Antibody conjugated nanoparticles (ACNPs) using PROTACs have not been designed and evaluated. In this pioneer approach, the commercial MZ1 PROTAC was encapsulated into the FDA-approved polymeric nanoparticles. The nanoparticles were conjugated with trastuzumab to guide the delivery of MZ1 to breast tumoral cells that overexpress HER2. These ACNPs were characterized by means of size, polydispersity index, and Z-potential. Morphology of the nanoparticles, along with stability and release studies, completed the characterization. MZ1-loaded ACNPs showed a significant cytotoxic effect maintaining its mechanism of action and improving its therapeutic properties.

scholarly journals Stiffness-tuneable nanocarriers for controlled delivery of ASC-J9 into colorectal cancer cells

2021 ◽  
Author(s):  
Mhd Anas Tomeh ◽  
Roja Hadianamrei ◽  
Weizhen Sun ◽  
Defeng Xu ◽  
Stephen Brown ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Cancer Cells ◽  
Controlled Delivery ◽  
Colorectal Cancer Cells
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