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https://www.readbyqxmd.com/read/27910739/overview-on-therapeutic-applications-of-microparticulate-drug-delivery-systems
#1
Swarna Bale, Amit Khurana, A Shiva Shankar Reddy, Mandip Singh, Chandraiah Godugu
Research in novel drug delivery systems is being explored competitively in order to attain maximum therapeutic effect while minimizing the adverse effects. Despite several advancements in pharmaceutical formulations, one of the major challenges still persisting is sustained drug release. Microencapsulation enacts as an intelligent approach with a strong therapeutic impact and is in demand globally in medical technology due to its specific and attractive properties, including biocompatibility, stability, target specificity, uniform encapsulation, better compliance, and controlled and sustained release patterns that are responsible for diminishing the toxicity and dosage frequency...
2016: Critical Reviews in Therapeutic Drug Carrier Systems
https://www.readbyqxmd.com/read/27910712/development-of-a-nanogel-formulation-for-transdermal-delivery-of-tenoxicam-a-pharmacokinetic-pharmacodynamic-modeling-approach-for-quantitative-prediction-of-skin-absorption
#2
Mohammed H Elkomy, Shahira F El Menshawe, Hussein M Eid, Ahmed M A Ali
This study investigates potentials of solid lipid nanoparticles (SLN) based gel for transdermal delivery of tenoxicam (TNX) and describes a pharmacokinetics-pharmacodynamics (PK-PD) modeling approach for predicting concentration-time profile in skin. A 2(3) factorial design was adopted to study the effect of formulation factors on SLN properties and determine the optimal formulation. SLN-gel tolerability was investigated using rabbit skin irritation test. Its anti-inflammatory activity was assessed by carrageenan induced rat paw edema test...
December 2, 2016: Drug Development and Industrial Pharmacy
https://www.readbyqxmd.com/read/27910297/successful-retrieval-of-an-entrapped-and-uncoiled-ffr-guidewire-using-balloon-support
#3
Marco Caruso, Angelo Quagliana, Massimo Benedetto, Salvatore Asciutto, Giuseppe Cirrincione
No abstract text is available yet for this article.
February 2017: Minerva Cardioangiologica
https://www.readbyqxmd.com/read/27910199/reverse-phase-compatible-tlc-bioautography-for-detection-of-tyrosinase-inhibitors
#4
Paula García, I Ayelen Ramallo, Ricardo L E Furlan
INTRODUCTION: Reverse phase chromatography and bioautographic assays are key tools for natural product bioguided isolation; however, their direct coupling has not been fully achieved. OBJECTIVES: To develop a bioautographic assay to detect tyrosinase inhibitors present in complex matrices sorbed on reverse phase (RP) TLC-plates that can be used for bioguided isolation of bioactive compounds. METHODS: Enzyme gel entrapment with an amphiphilic copolymer was used for assay development...
December 2, 2016: Phytochemical Analysis: PCA
https://www.readbyqxmd.com/read/27908720/preparation-and-characterization-of-polymeric-nanoparticles-surface-modified-with-chitosan-for-target-treatment-of-colorectal-cancer
#5
Mohamed M Badran, Mohsen M Mady, Magdy M Ghannam, Faiyaz Shakeel
5-Fluorouracil (5-FU) loaded chitosan (C) coated polylactic-co-glycolic acid (PLGA) nanoparticles [NPs] (C-5-FU PLGA NPs) and polycaprolactone [PCL] (C-5-FU PCL NPs) were employed as the carriers for cancer treatment. The prepared NPs showed the spherical shape of NPs with the particle size in the range of 188.1-302.2nm with polydispersity index (PDI) of<0.30. C-coated NPs converted zeta potential from negative to positive value with small modification in particle size distribution. The entrapment efficiency of 5-FU was recorded in the range of 32-51%...
November 28, 2016: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/27908267/development-of-poly-lactide-co-glicolide-nanoparticles-incorporating-morphine-hydrochloride-to-prolong-its-circulation-in-blood
#6
Victoria Gómez-Murcia, Mercedes García Montalbán, Juan Carmelo Gómez-Fernández, Pilar Almela
Formulations incorporating nanoparticles (NPs) are widely used to prolong drug release. In this regard, poly(lactide-co-glicolide) (PLGA) is often used in their preparation due to its high degree of biocompatibility and biodegradability. In the present study, morphine HCl is incorporated in PLGA-NPs and different preparation alternatives are evaluated for their effects on the properties, stability and capacity of encapsulation. NPs were prepared by a double emulsion solvent diffusion-ammonium loading (DESD-AL) or double emulsion solvent diffusion-traditional (DESD-T) technique...
December 1, 2016: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/27906978/correction-of-rings-and-rods-regulating-cohesin-entrapment-of-dna-to-generate-intra-and-intermolecular-tethers
#7
Robert V Skibbens
[This corrects the article DOI: 10.1371/journal.pgen.1006337.].
December 2016: PLoS Genetics
https://www.readbyqxmd.com/read/27906945/ganglion-cyst-at-the-proximal-tibiofibular-joint-in-a-patient-with-painless-foot-drop
#8
Abdulmuhsen Alsahhaf, Waleed Renno
Entrapment neuropathies of the fibular nerve and its branches are often underdiagnosed due to the lack of reliable diagnosis using clinical examination and electrophysiologic evaluation. Most fibular nerve compressions may be classified into 2 broad categories: (a) mechanical causes, which occur at fibrous or fibro-osseous tunnels, and (b) dynamic causes related to nerve injury during specific limb positioning. Foot drop resulting from weakness of the dorsiflexor muscles of the foot is a relatively uncommon presentation and closely related to L5 neuropathy caused by a disc herniation...
November 2016: Pain Physician
https://www.readbyqxmd.com/read/27905004/ocular-disposition-of-%C3%A2-8-tetrahydrocannabinol-from-various-topical-ophthalmic-formulations
#9
Nagendra S Punyamurthula, Goutham R Adelli, Waseem Gul, Michael A Repka, Mahmoud A ElSohly, Soumyajit Majumdar
The purposes of this project are to enhance the trans-membrane penetration of Δ(8)-Tetrahydrocannabinol (Δ(8)-THC) and to study the effect of various lipid based systems in delivering the compound, non-invasively, to anterior and posterior ocular chambers. Solid lipid nanoparticles (SLNs), fast gelling films were manufactured using high pressure homogenization and melt cast techniques, respectively. The formulations were characterized for drug content, entrapment efficiency, particle size and subsequently evaluated in vitro for trans-corneal permeation...
November 30, 2016: AAPS PharmSciTech
https://www.readbyqxmd.com/read/27904865/giant-true-brachial-artery-aneurysm-after-hemodialysis-fistula-closure-in-a-renal-transplant-patient
#10
Doriana Ferrara, Michele Di Filippo, Flavia Spalla, Anna Maria Giribono, Emanuela Viviani, Annamaria Santagata, Umberto Bracale, Michele Santangelo, Luca Del Guercio, Umberto Marcello Bracale
The usual manifestation of brachial artery aneurysms is the incidental finding of a swelling of the arm, combined with paresthesia or pain in some cases. The etiology is often traumatic or secondary to drug abuse. Pathophysiology of brachial artery dilation in these cases is not completely clear. We herein describe a case of a 61-year-old male presenting with a giant, painful, pulsatile mass on his left arm. He was submitted to a cadaveric kidney transplant in 2005. He had a functioning arteriovenous fistula (AVF) on his right arm, and a spontaneously thrombosed radiocephalic AVF on his left arm...
September 2016: Case Reports in Nephrology and Dialysis
https://www.readbyqxmd.com/read/27904075/in-vitro-permeation-and-skin-retention-of-%C3%AE-mangostin-proniosome
#11
Gan Siaw Chin, Hiroaki Todo, Wesam Radhi Kadhum, Mariani Abdul Hamid, Kenji Sugibayashi
The current investigation evaluated the potential of proniosome as a carrier to enhance skin permeation and skin retention of a highly lipophilic compound, α-mangostin. α-Mangostin proniosomes were prepared using the coacervation phase seperation method. Upon hydration, α-mangostin loaded niosomes were characterized for size, polydispersity index (PDI), entrapment efficiency (EE) and ζ-potential. The in vitro permeation experiments with dermis-split Yucatan Micropig (YMP) skin revealed that proniosomes composed of Spans, soya lecithin and cholesterol were able to enhance the skin permeation of α-mangostin with a factor range from 1...
2016: Chemical & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/27903455/complexation-hydrogels-as-potential-carriers-in-oral-vaccine-delivery-systems
#12
Mia Yoshida, Noriyasu Kamei, Keiya Muto, Jun Kunisawa, Kozo Takayama, Nicholas A Peppas, Mariko Takeda-Morishita
Most current vaccine preparations are in injectable forms, which are inconvenient to patients and ineffective in mucosal immunization. Therefore, most research in this field has been directed at developing ideal oral vaccines enabling the induction of both systemic and mucosal immune responses. In the present study, we examined the utility of a pH-responsive polymeric carrier, poly (methacrylic acid-g-ethylene glycol) [P (MAA-g-EG)] hydrogel, as a potential oral vaccine carrier that can protect cargo proteins in the gastrointestinal tract...
November 26, 2016: European Journal of Pharmaceutics and Biopharmaceutics
https://www.readbyqxmd.com/read/27902538/ulnar-tunnel-syndrome-radial-tunnel-syndrome-anterior-interosseous-nerve-syndrome-and-pronator-syndrome
#13
Adam B Strohl, David S Zelouf
In addition to the more common carpal tunnel and cubital tunnel syndromes, orthopaedic surgeons must recognize and manage other potential sites of peripheral nerve compression. The distal ulnar nerve may become compressed as it travels through the wrist, which is known as ulnar tunnel or Guyon canal syndrome. The posterior interosseous nerve may become entrapped in the proximal forearm as it travels through the radial tunnel, which results in a pain syndrome without motor weakness. The median nerve may become entrapped in the proximal forearm, which can result in a variety of symptoms...
November 29, 2016: Journal of the American Academy of Orthopaedic Surgeons
https://www.readbyqxmd.com/read/27901092/a-microfluidic-platform-to-design-crosslinked-hyaluronic-acid-nanoparticles-chanps-for-enhanced-mri
#14
Maria Russo, Paolo Bevilacqua, Paolo Antonio Netti, Enza Torino
Recent advancements in imaging diagnostics have focused on the use of nanostructures that entrap Magnetic Resonance Imaging (MRI) Contrast Agents (CAs), without the need to chemically modify the clinically approved compounds. Nevertheless, the exploitation of microfluidic platforms for their controlled and continuous production is still missing. Here, a microfluidic platform is used to synthesize crosslinked Hyaluronic Acid NanoParticles (cHANPs) in which a clinically relevant MRI-CAs, gadolinium diethylenetriamine penta-acetic acid (Gd-DTPA), is entrapped...
November 30, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27900300/treatment-of-proximal-hamstring-tendinopathy-related-sciatic-nerve-entrapment-presentation-of-an-ultrasound-guided-intratissue-percutaneous-electrolysis-application
#15
Gabriele Mattiussi, Carlos Moreno
BACKGROUND: Proximal Hamstring Tendinopathy-related Sciatic Nerve Entrapment (PHTrSNE) is a neuropathy caused by fibrosis interposed between the semimembranosus tendon and the sciatic nerve, at the level of the ischial tuberosity. METHODS: Ultrasound-guided Intratissue Percutaneous Electrolysis (US-guided EPI) involves galvanic current transfer within the treatment target tissue (fibrosis) via a needle 0.30 to 0.33 mm in diameter. The galvanic current in a saline solution instantly develops the chemical process of electrolysis, which in turn induces electrochemical ablation of fibrosis...
April 2016: Muscles, Ligaments and Tendons Journal
https://www.readbyqxmd.com/read/27899335/design-and-characterization-of-plasmids-encoding-antigenic-peptides-of-aha1-from-aeromonas-hydrophila-as-prospective-fish-vaccines
#16
Pradipta R Rauta, Bismita Nayak, Gabriel A Monteiro, Marília Mateus
The current investigation aimed at designing DNA vaccines against Aeromonas hydrophila infections. The DNA vaccine candidates were designed to express two antigenic outer membrane protein (Aha1) peptides and to be delivered by a nanoparticle-based delivery system. Gene sequences of conserved regions of antigenic Aha1 [aha1(211-381), aha1(211-381)opt, aha1(703-999) and aha1(703-999)opt] were cloned into pVAX-GFP expression vector. The selected DNA vaccine candidates were purified from E. coli DH5α and transfected into Chinese hamster ovary cells...
November 26, 2016: Journal of Biotechnology
https://www.readbyqxmd.com/read/27899320/preparation-characterization-and-in-vivo-pharmacokinetic-study-of-pvp-modified-oleanolic-acid-liposomes
#17
Yan Liu, Xiao Luo, Xiaochao Xu, Nannan Gao, Xiaohong Liu
The primary purpose of the present study was to design and optimize a liposomal formulation of the poorly water-soluble drug oleanolic acid (OA) to improve its oral bioavailability, and prolong the duration of therapeutic drug level. Liposomes containing a soybean lecithin and cholesterol lipid bilayer, a protective hydrophilic polyvinylpyrrolidone-K30 (PVP-K30) coating, and a protective bile salt, sodium deoxycholate, were prepared by a thin-film dispersion method coupled with sonication. Several properties of the PVP-modified OA liposomes (PVPOALs), including surface morphology, particle size, zeta potential and entrapment efficiency were extensively characterized...
November 26, 2016: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/27899021/does-preoperative-diplopia-determine-the-incidence-of-postoperative-diplopia-after-repair-of-orbital-floor-fracture-an-institutional-review
#18
Avisham Ramphul, Gary Hoffman
PURPOSE: The purpose of our study was to investigate whether the occurrence of preoperative diplopia determines the incidence of postoperative diplopia after orbital floor repair. MATERIALS AND METHODS: We undertook a retrospective cohort study with a review of the records of 126 consecutive patients who had undergone repair of an orbital floor fracture under the maxillofacial surgery service at John Hunter Hospital (Newcastle, NSW, Australia). The primary predictor variables were a number of demographic, etiologic, and operative factors that might influence the occurrence of diplopia...
November 9, 2016: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/27898022/enhanced-and-extended-anti-hypertensive-effect-of-vp5-nanoparticles
#19
Ting Yu, Shengnan Zhao, Ziqiang Li, Yi Wang, Bei Xu, Dailong Fang, Fazhan Wang, Zhi Zhang, Lili He, Xiangrong Song, Jian Yang
Hypertension has become a significant global public health concern and is also one of the most common risk factors of cardiovascular disease. Recent studies have shown the promising result of peptides inhibiting angiotensin converting enzyme (ACE) in lowering the blood pressure in both animal models and humans. However, the oral bioavailability and continuous antihypertensive effectiveness require further optimization. Novel nanoparticle-based drug delivery systems are helpful to overcome these barriers. Therefore, a poly-(lactic-co-glycolic) acid nanoparticle (PLGANPs) oral delivery system, of the antihypertensive small peptides Val-Leu-Pro-Val-Pro (VLPVP, VP5) model, was developed in this study and its antihypertensive effect was investigated in spontaneously hypertensive rats (SHRs) for the first time...
November 25, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/27896238/retroperitoneal-fibrosis-due-to-opium-abuse-a-case-series-and-literature-review
#20
Mohammad Ali Mohammadzadeh Rezaei, Alireza Akhavan Rezayat, Shima Ardalan
Retroperitoneal fibrosis (RPF) is a rare condition with an unclear etiology, presenting with the development of aberrant chronic nonspecific fibroinflammatory tissue in the retroperitoneal space, which can result in entrapment and obstruction of the retroperitoneal structures. RPF is a subtype of chronic periaortitis, and can be divided into two types: primary (or idiopathic) and secondary. RPF is usually idiopathic, but can also be secondary to malignancies, certain drugs, infections, surgery, and trauma. The systemic clinical manifestations are nonspecific and include low-grade fever, fatigue, anorexia, weight loss, and myalgia...
November 2016: Nephro-urology Monthly
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