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pharmaceutical development and technology

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https://www.readbyqxmd.com/read/28922593/cysteine-silac-mass-spectrometry-enables-the-identification-and-quantitation-of-scrambled-inter-chain-disulfide-bonds-preservation-of-native-heavy-light-chain-pairing-in-bispecific-iggs-generated-by-controlled-fab-arm-exchange
#1
Ewald T J van den Bremer, Aran F Labrijn, Ramon van den Boogaard, Patrick Priem, Kai Scheffler, Joost P M Melis, Janine Schuurman, Paul Parren, Rob N de Jong
Bispecific antibodies (bsAbs) are one of the most versatile and promising pharmaceutical innovations for countering heterogeneous and refractory disease by virtue of their ability to bind two distinct antigens. One critical quality attribute of bsAb formation requiring investigation is the potential randomization of cognate heavy chain (H)/light (L) chain pairing, which could occur to a varying extent dependent on bsAb format and the production platform. To assess the content of such HL chain-swapped reaction products with high sensitivity, we developed cysteine-SILAC, a method that facilitates the detailed characterization of disulfide-bridged peptides by mass-spectrometry...
September 18, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28920496/spin-rapid-synthesis-purification-and-concentration-of-small-drug-loaded-liposomes
#2
Steven A Roberts, Neil Parikh, Ryan J Blower, Nitin Agrawal
Liposomes are one of the most studied nano-delivery systems. However, only a handful of formulations have received FDA approval. Existing liposome synthesis techniques are complex and specialized, posing a major impediment in design, implementation, and mass production of liposome delivery systems as therapeutic agents. Here, we demonstrate a unique 'synthesis and purification of injectable nanocarriers' (SPIN) technology for rapid and efficient production of small drug loaded liposomes using common benchtop equipment...
September 18, 2017: Journal of Liposome Research
https://www.readbyqxmd.com/read/28917964/phenazopyridine-phthalimide-nano-cocrystal-release-rate-and-oral-bioavailability-enhancement
#3
Yu Huang, Jin-Mei Li, Zhi-Hui Lai, Jun Wu, Tong-Bu Lu, Jia-Mei Chen
Both cocrystal and nanocrystal technologies have been widely used in the pharmaceutical development for poorly soluble drugs. However, the synergistic effects due to the integration of these two technologies have not been well investigated. The aim of this study is to develop a nano-sized cocrystal of phenazopyridine (PAP) with phthalimide (PI) to enhance the release rate and oral bioavailability of PAP. A PAP-PI nano-cocrystal with particle diameter of 21.4±0.1nm was successfully prepared via a sonochemical approach and characterized by powder X-ray diffraction (PXRD), differential scanning calorimetry (DSC), scanning electron microscopy (SEM) and dynamic light scattering (DLS) analysis...
September 13, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28912290/achieving-high-quality-care-a-view-from-nice
#4
REVIEW
Gillian Leng, Gemma Partridge
The National Institute for Health and Care Excellence (NICE) was established in 1999 to provide evidence-based guidance. The task of producing guidance by reviewing primary research data and using an advisory committee to develop evidence-based recommendations, is not straightforward. Guidance production is, however, less challenging than the task of putting evidence-based recommendations into practice.NICE is very sensitive to this challenge as, since 1999, over 1500 pieces of NICE guidance have been published...
September 14, 2017: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/28911307/tumor-targeting-of-polymeric-nanoparticles-conjugated-with-peptides-saccharides-and-small-molecules-for-anticancer-drugs
#5
Banu Bayram, Aykut Özgür, Lütfi Tutar, Yusuf Tutar
Targeting drugs or pharmaceutical compounds to tumor site increases cancer treatment efficiency and therapeutic outcome. Nanoparticles are unique delivery systems for site-targeting within an organism. Many novel technologies have been established in drug research and development area. Nanotechnology now offers nanometer size polymeric nanoparticles and these particles direct drugs to their targets, protect drugs against degradation, and release the drug in a controlled manner. Modification of nanoparticle surface by molecules leads to prolonged retention and accumulation in the target area of the organism...
June 7, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28910516/controlling-differentiation-of-stem-cells-for-developing-personalized-organ-on-chip-platforms
#6
REVIEW
Armin Geraili, Parya Jafari, Mohsen Sheikh Hassani, Behnaz Heidary Araghi, Mohammad Hossein Mohammadi, Amir Mohammad Ghafari, Sara Hasanpour Tamrin, Hassan Pezeshgi Modarres, Ahmad Rezaei Kolahchi, Samad Ahadian, Amir Sanati-Nezhad
Organ-on-chip (OOC) platforms have attracted attentions of pharmaceutical companies as powerful tools for screening of existing drugs and development of new drug candidates. OOCs have primarily used human cell lines or primary cells to develop biomimetic tissue models. However, the ability of human stem cells in unlimited self-renewal and differentiation into multiple lineages has made them attractive for OOCs. The microfluidic technology has enabled precise control of stem cell differentiation using soluble factors, biophysical cues, and electromagnetic signals...
September 14, 2017: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/28893307/interventions-to-control-myopia-progression-in-children-protocol-for-an-overview-of-systematic-reviews-and-meta-analyses
#7
Efthymia Prousali, Asimina Mataftsi, Nikolaos Ziakas, Andreas Fontalis, Periklis Brazitikos, Anna-Bettina Haidich
BACKGROUND: Myopia is a common visual disorder with increasing prevalence among developed countries of the world. Myopia constitutes a substantial risk factor for several ocular conditions that can lead to blindness. The purpose of this study is to conduct an overview of systematic reviews and meta-analyses in order to identify and appraise robust research evidence regarding the management of myopia progression in children and adolescents. METHODS: A literature search will be conducted in MEDLINE, EMBASE, The Cochrane Database of Systematic Reviews (CDSR), Database of Abstracts of Reviews of Effects (DARE), and Health Technology Assessment (HTA) Database via Centre for Reviews and Dissemination (CRD)...
September 11, 2017: Systematic Reviews
https://www.readbyqxmd.com/read/28892296/tailored-approaches-in-drug-development-and-diagnostics-from-molecular-design-to-biological-model-systems
#8
REVIEW
Cecilia Sahlgren, Annika Meinander, Hongbo Zhang, Fang Cheng, Maren Preis, Chunlin Xu, Tiina A Salminen, Diana Toivola, Daniel Abankwa, Ari Rosling, Didem Şen Karaman, Outi M H Salo-Ahen, Ronald Österbacka, John E Eriksson, Stefan Willför, Ion Petre, Jouko Peltonen, Reko Leino, Mark Johnson, Jessica Rosenholm, Niklas Sandler
Approaches to increase the efficiency in developing drugs and diagnostics tools, including new drug delivery and diagnostic technologies, are needed for improved diagnosis and treatment of major diseases and health problems such as cancer, inflammatory diseases, chronic wounds, and antibiotic resistance. Development within several areas of research ranging from computational sciences, material sciences, bioengineering to biomedical sciences and bioimaging is needed to realize innovative drug development and diagnostic (DDD) approaches...
September 11, 2017: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/28888551/amino-acids-production-focusing-on-fermentation-technologies-a-review
#9
REVIEW
Martina D'Este, Merlin Alvarado-Morales, Irini Angelidaki
Amino acids are attractive and promising biochemicals with market capacity requirements constantly increasing. Their applicability ranges from animal feed additives, flavour enhancers and ingredients in cosmetic to specialty nutrients in pharmaceutical and medical fields. This review gives an overview of the processes applied for amino acids production and points out the main advantages and disadvantages of each. Due to the advances made in the genetic engineering techniques, the biotechnological processes, and in particular the fermentation with the aid of strains such as Corynebacterium glutamicum or Escherichia coli, play a significant role in the industrial production of amino acids...
September 6, 2017: Biotechnology Advances
https://www.readbyqxmd.com/read/28887452/scalable-carbon-dioxide-electroreduction-coupled-to-carbonylation-chemistry
#10
Mikkel T Jensen, Magnus H Rønne, Anne K Ravn, René W Juhl, Dennis U Nielsen, Xin-Ming Hu, Steen U Pedersen, Kim Daasbjerg, Troels Skrydstrup
Significant efforts have been devoted over the last few years to develop efficient molecular electrocatalysts for the electrochemical reduction of carbon dioxide to carbon monoxide, the latter being an industrially important feedstock for the synthesis of bulk and fine chemicals. Whereas these efforts primarily focus on this formal oxygen abstraction step, there are no reports on the exploitation of the chemistry for scalable applications in carbonylation reactions. Here we describe the design and application of an inexpensive and user-friendly electrochemical set-up combined with the two-chamber technology for performing Pd-catalysed carbonylation reactions including amino- and alkoxycarbonylations, as well as carbonylative Sonogashira and Suzuki couplings with near stoichiometric carbon monoxide...
September 8, 2017: Nature Communications
https://www.readbyqxmd.com/read/28887135/progress-in-brain-targeting-drug-delivery-system-by-nasal-route
#11
REVIEW
Abdur Rauf Khan, Mengrui Liu, Muhammad Wasim Khan, Guangxi Zhai
The blood-brain barrier (BBB) restricts the transport of potential therapeutic moieties to the brain. Direct targeting the brain via olfactory and trigeminal neural pathways by passing the BBB has gained an important consideration for delivery of wide range of therapeutics to brain. Intranasal route of transportation directly delivers the drugs to brain without systemic absorption, thus avoiding the side effects and enhancing the efficacy of neurotherapeutics. Over the last several decades, different drug delivery systems (DDSs) have been studied for targeting the brain by the nasal route...
September 5, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/28880561/therapeutic-mechanism-studies-of-shufengjiedu-capsule-on-an-acute-lung-injury-animal-model-using-quantitative-proteomics-technology
#12
Zhengang Tao, Xia Meng, Yan-Qi Han, Ming-Ming Xue, Shifei Wu, Ping Wu, Ying Yuan, Zhu Qiang, Tie-Jun Zhang, Catherine Cl Wong
ShuFengJieDu Capsule (SFJDC), a traditional Chinese Medicine (TCM) that comprises eight medicinal herbs, has been extensively utilized in the treatment of acute lung injury (ALI) and respiratory infections for more than 30 years in China. SFJDC has also been listed in the official guidelines of the CFDA (China Food and Drug Administration) because of its stabilized clinical manifestations. However, the underlying mechanism of SFJDC in repairing ALI remains unclear. In the present study, we explored the protective and therapeutic mechanism of SFJDC in a rat model using qualitative and quantitative proteomics...
September 7, 2017: Journal of Proteome Research
https://www.readbyqxmd.com/read/28877208/surveillance-for-falsified-and-substandard-medicines-in-africa-and-asia-by-local-organizations-using-the-low-cost-gphf-minilab
#13
Albert Petersen, Nadja Held, Lutz Heide
BACKGROUND: Substandard and falsified medical products present a serious threat to public health, especially in low- and middle-income countries. Their identification using pharmacopeial analysis is expensive and requires sophisticated equipment and highly trained personnel. Simple, low-cost technologies are required in addition to full pharmacopeial analysis in order to accomplish widespread routine surveillance for poor-quality medicines in low- and middle-income countries. METHODS: Ten faith-based drug supply organizations in seven countries of Africa and Asia were each equipped with a Minilab of the Global Pharma Health Fund (GPHF, Frankfurt, Germany), suitable for the analysis of about 85 different essential medicines by thin-layer chromatography...
2017: PloS One
https://www.readbyqxmd.com/read/28876904/role-of-biocatalysis-in-sustainable-chemistry
#14
Roger A Sheldon, John M Woodley
Based on the principles and metrics of green chemistry and sustainable development, biocatalysis is both a green and sustainable technology. This is largely a result of the spectacular advances in molecular biology and biotechnology achieved in the past two decades. Protein engineering has enabled the optimization of existing enzymes and the invention of entirely new biocatalytic reactions that were previously unknown in Nature. It is now eminently feasible to develop enzymatic transformations to fit predefined parameters, resulting in processes that are truly sustainable by design...
September 6, 2017: Chemical Reviews
https://www.readbyqxmd.com/read/28872126/application-and-methodology-of-the-non-destructive-19f-time-domain-nmr-technique-to-measure-the-content-in-fluorine-containing-drug-products
#15
Maria Victoria Silva Elipe, Lan Li, Karthik Nagapudi, Alan M Kook, Carlos Cobas, Isaac Iglesias, Chen Peng
Here, we describe a protocol developed by our group that uses low-field fluorine-19 ((19)F) time-domain (TD) nuclear magnetic resonance (NMR) to measure the average content of fluorinated drugs in their formulated drug product forms: tablets or capsules. This method is specific to fluorinated drugs because it detects only the content of fluorine, avoiding interference from the excipients that lack fluorine. The advantages of measuring the active content of fluorinated drugs using low-field (19)F TD-NMR versus high-field (19)F solid-state (SS) NMR are the simplicity of the method; the low cost; and the non-destructive nature of the technique, with all samples recoverable in intact forms (e...
August 22, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28870749/bioprinting-and-its-applications-in-tissue-engineering-and-regenerative-medicine
#16
REVIEW
Waeljumah Aljohani, Muhammad Wajid Ullah, Xianglin Zhang, Guang Yang
Bioprinting of three-dimensional constructs mimicking natural-like extracellular matrix has revolutionized biomedical technology. Bioprinting technology circumvents various discrepancies associated with current tissue engineering strategies by providing an automated and advanced platform to fabricate various biomaterials through precise deposition of cells and polymers in a premeditated fashion. However, few obstacles associated with development of 3D scaffolds including varied properties of polymers used and viability, controlled distribution, and vascularization, etc...
September 8, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28867759/development-and-optimization-of-orally-and-topically-applied-liquid-crystal-drug-formulations
#17
Wesam R Kadhum, Tomoki Hada, Ichiro Hijikuro, Hiroaki Todo, Kenji Sugibayashi
Liquid crystal (LC)-forming lipids represent an important class of biocompatible amphiphiles and their application extends to cosmeceutical, dietary, and pharmaceutical technologies. In the present study, we aimed to develop strategies for designing and optimizing oral and topical LC formulations by evaluating their in vitro and in vivo drug absorption performances. C17-Monoglycerol ester (MGE) was used as a LC-forming lipid. p-Amino benzoic acid, methyl PABA, ethyl PABA, and sodium fluorescein were selected as drug models with different physiochemical properties...
2017: Journal of Oleo Science
https://www.readbyqxmd.com/read/28844174/novel-reverse-electrodialysis-driven-iontophoretic-system-for-topical-and-transdermal-delivery-of-poorly-permeable-therapeutic-agents
#18
Ki-Taek Kim, Joon Lee, Min-Hwan Kim, Ju-Hwan Park, Jae-Young Lee, Joo-Hyun Song, Minwoong Jung, Myoung-Hoon Jang, Hyun-Jong Cho, In-Soo Yoon, Dae-Duk Kim
Topical and transdermal drug delivery has great potential in non-invasive and non-oral administration of poorly bioavailable therapeutic agents. However, due to the barrier function of the stratum corneum, the drugs that can be clinically feasible candidates for topical and transdermal delivery have been limited to small-sized lipophilic molecules. Previously, we fabricated a novel iontophoretic system using reverse electrodialysis (RED) technology (RED system). However, no study has demonstrated its utility in topical and/or transdermal delivery of poorly permeable therapeutic agents...
November 2017: Drug Delivery
https://www.readbyqxmd.com/read/28842310/designing-optimal-formulations-for-hot-melt-coating
#19
Diogo Gomes Lopes, Sharareh Salar-Behzadi, Andreas Zimmer
Hot-melt coating (HMC) as a solvent-free technology grants faster and more economic coating processes with reduced risk of dissolving the drug during the process. Moreover, traditional coating equipment can be modified to enable the HMC process. Despite the indubitable advantages and feasibility of the process, HMC is not well-known to pharmaceutical industry and its employment is still limited. The main aspect hindering the widespread application of this technique is the need of materials alternative to the conventional polymeric coatings...
August 22, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28840744/the-evolution-of-chicken-stem-cell-culture-methods
#20
M Farzaneh, F Attari, P E Mozdziak, S E Khoshnam
1. The avian embryo is an excellent model for studying embryology and the production of pharmaceutical proteins in transgenic chickens. Furthermore chicken stem cells have the potential for proliferation and differentiation and emerged as an attractive tool for various cell-based technologies. 2. The objective of these studies is the derivation and culture of these stem cells is the production of transgenic birds for recombinant biomaterials and vaccine manufacture, as well as to gain insight into basic science, including cell tracking, as well as drug and cytotoxicity testing...
August 25, 2017: British Poultry Science
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