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https://www.readbyqxmd.com/read/28108974/design-and-evaluation-of-topical-diclofenac-sodium-gel-using-hot-melt-extrusion-technology-as-a-continuous-manufacturing-process-with-kolliphor%C3%A2-p407
#1
Jaywant Pawar, Rajkiran Narkhede, Purnima Amin, Vaishali Tawde
The aim of the present context was to develop and evaluate a Kolliphor® P407-based transdermal gel formulation of diclofenac sodium by hot melt extrusion (HME) technology; central composite design was used to optimize the formulation process. In this study, we have explored first time ever HME as an industrially feasible and continuous manufacturing technology for the manufacturing of gel formulation using Kolliphor® P407 and Kollisolv® PEG400 as a gel base. Diclofenac sodium was used as a model drug. The HME parameters such as feeding rate, screw speed, and barrel temperature were crucial for the semisolid product development, and were optimized after preliminary trials...
January 20, 2017: AAPS PharmSciTech
https://www.readbyqxmd.com/read/28072741/daughter-and-mother-diagnosed-with-hereditary-multiple-exostoses-a-case-report-and-a-review-of-the-literature
#2
Cristina Oana Mărginean, Lorena Elena Meliţ, Maria Oana Mărginean
INTRODUCTION: Hereditary multiple exostoses (HME) or osteochondromatosis is a rare autosomal dominant disease characterized by multiple osteochondromas and skeletal deformities. PATIENT CONCERNS & DIAGNOSES: We present the case of a 5 years and 9 month-old patient who presented with inferior limb pain for approximately 6 months, associating also deformity of the right index finger for a month. Hand X-ray revealed a radiologic abnormality of the right radius, therefore the child was referred to our clinic for further investigations...
January 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28053536/identification-of-a-new-mutation-in-an-iranian-family-with-hereditary-multiple-osteochondromas
#3
Susan Akbaroghli, Maryam Balali, Behnam Kamalidehghan, Siamak Saber, Omid Aryani, Goh Yong Meng, Massoud Houshmand
BACKGROUND: Hereditary multiple osteochondromas (HMO), previously named hereditary multiple exostoses (HME), is an autosomal dominant skeletal disorder characterized by the growth of multiple osteochondromas and is associated with bony deformity, skeletal growth reduction, nerve compression, restriction of joint motion, and premature osteoarthrosis. HMO is genetically heterogeneous, localized on at least three chromosomal loci including 8q24.1 (EXT1), 11p11-p13 (EXT2), and 19p (EXT3)...
2017: Therapeutics and Clinical Risk Management
https://www.readbyqxmd.com/read/28040458/a-novel-approach-for-the-development-of-a-nanostructured-lipid-carrier-formulation-by-hot-melt-extrusion-technology
#4
Ajinkya M Bhagurkar, Michael A Repka, S Narasimha Murthy
The main aim of this study was to investigate the feasibility of preparing nanostructured lipid carrier (NLC) utilizing hot-melt extrusion (HME) coupled with probe sonication. The process parameters for HME and sonication were optimized and a modified screw configuration was used for extrusion. Lidocaine loaded NLCs were successfully prepared by the proposed method with particle size lower than 50 nm and PDI less than 0.3. Transmission electron microscopy revealed the spherical nature of the particles. The second objective was to develop NLCs for topical controlled delivery of drug for pain management in cutaneous wounds...
December 28, 2016: Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28017768/coupling-3d-printing-with-hot-melt-extrusion-to-produce-controlled-release-tablets
#5
Jiaxiang Zhang, Xin Feng, Hemlata Patil, Roshan V Tiwari, Michael A Repka
The main objective of this work was to explore the potential of coupling fused deposition modeling in three-dimensional (3D) printing with hot-melt extrusion (HME) technology to facilitate additive manufacturing, in order to fabricate tablets with enhanced extended release properties. Acetaminophen was used as the model drug and different grades and ratios of polymers were used to formulate tablets. Three-point bending and hardness tests were performed to determine the mechanical properties of the filaments and tablets...
December 22, 2016: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/27992309/advanced-implantable-drug-delivery-systems-via-continuous-manufacturing
#6
Mohammed Maniruzzaman, Ali Nokhodchi
Polymeric implantable drug delivery systems have remarkable potential for systemic delivery of various therapeutic agents. Generally, drug-loaded implants do not require a vehicle for delivery and can be used to attain prolonged delivery into the systemic circulation of active pharmaceutical ingredients (APIs) with enhanced drug bioavailability. Furthermore, implants can provide drug release ranging from months to years, which improves patient compliance, especially for poorly bioavailable and rapidly metabolized compounds...
2016: Critical Reviews in Therapeutic Drug Carrier Systems
https://www.readbyqxmd.com/read/27988376/in-line-monitoring-of-compaction-properties-on-a-rotary-tablet-press-during-tablet-manufacturing-of-hot-melt-extruded-amorphous-solid-dispersions
#7
W Grymonpré, G Verstraete, P J Van Bockstal, J Van Renterghem, P Rombouts, T De Beer, J P Remon, C Vervaet
As the number of applications for polymers in pharmaceutical development is increasing, there is need for fundamental understanding on how such compounds behave during tableting. This research is focussed on the tableting behaviour of amorphous polymers, their solid dispersions and the impact of hot-melt extrusion on the compaction properties of these materials. Soluplus, Kollidon VA 64 and Eudragit EPO were selected as amorphous polymers since these are widely studied carriers for solid dispersions, while Celecoxib was chosen as BCS class II model drug...
December 14, 2016: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/27943014/fabricating-a-shell-core-delayed-release-tablet-using-dual-fdm-3d-printing-for-patient-centred-therapy
#8
Tochukwu C Okwuosa, Beatriz C Pereira, Basel Arafat, Milena Cieszynska, Abdullah Isreb, Mohamed A Alhnan
PURPOSE: Individualizing gastric-resistant tablets is associated with major challenges for clinical staff in hospitals and healthcare centres. This work aims to fabricate gastric-resistant 3D printed tablets using dual FDM 3D printing. METHODS: The gastric-resistant tablets were engineered by employing a range of shell-core designs using polyvinylpyrrolidone (PVP) and methacrylic acid co-polymer for core and shell structures respectively. Filaments for both core and shell were compounded using a twin-screw hot-melt extruder (HME)...
December 9, 2016: Pharmaceutical Research
https://www.readbyqxmd.com/read/27933382/the-impact-of-hereditary-multiple-exostoses-on-quality-of-life-satisfaction-global-health-status-and-pain
#9
Riccardo D'Ambrosi, Vincenza Ragone, Camilla Caldarini, Nicola Serra, Federico Giuseppe Usuelli, Renato Mario Facchini
PURPOSE: The aim of the study was to evaluate quality of life (QOL), global health status, pain, and level of satisfaction in patients with hereditary multiple exostoses (HME), and to correlate the association between the severity of diseases and age, sex, number of surgical procedures, and number of exostoses. METHODS: The data of 50 patients with HME were retrospectively evaluated and recorded. QOL was evaluated with the Short-Form Health Survey (SF-12) questionnaire, the 12-Item General Health Questionnaire (GHQ-12), and Quality of Life Enjoyment and Satisfaction Questionnaire (Q-LES-Q-SF); intensity of pain was measured using the visual analogue scale (VAS)...
December 8, 2016: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/27920806/hereditary-multiple-exostoses-a-review-of-clinical-appearance-and-metabolic-pattern
#10
REVIEW
Giovanni Beltrami, Gabriele Ristori, Guido Scoccianti, Angela Tamburini, Rodolfo Capanna
Hereditary multiple exostoses (HME) is an inherited genetic condition characterized by the presence of multiple exostoses (osteochondromas). MHE is a relatively rare autosomal dominant disorder, mainly caused by loss of function mutations in two genes: exostosin-1 (EXT1) and exostosin-2 (EXT2). These genes are linked to heparan sulfate (HS) synthesis, but the specific molecular mechanism leading to the disruption of the cartilage structure and the consequent exostoses formation is still not resolved. The aim of this paper is to encounter the main aspects of HME reviewing the literature, in order to improve clinical features and evolution, and the metabolic-pathogenetic mechanisms underlying...
May 2016: Clinical Cases in Mineral and Bone Metabolism
https://www.readbyqxmd.com/read/27866007/continuous-manufacturing-via-hot-melt-extrusion-and-scale-up-regulatory-matters
#11
REVIEW
Mohammed Maniruzzaman, Ali Nokhodchi
Currently, because globalization, the pharmaceutical industry is facing enormous challenges to comply with regulatory matters. Reduced patent life and overall decreased profitability of newly discovered drugs are also forcing the pharmaceutical industry to shorten the drug development time with maximum throughput. Therefore, continuous manufacturing (CM) processes via hot melt extrusion (HME) can be a promising alternative for achieving these goals. HME offers solvent-free green technology with a process that is easy to scale up...
November 16, 2016: Drug Discovery Today
https://www.readbyqxmd.com/read/27848149/midlife-managerial-experience-is-linked-to-late-life-hippocampal-morphology-and-function
#12
C Suo, N Gates, M Fiatarone Singh, N Saigal, G C Wilson, J Meiklejohn, P Sachdev, H Brodaty, W Wen, N Singh, B T Baune, M Baker, N Foroughi, Y Wang, Michael J Valenzuela
An active cognitive lifestyle has been suggested to have a protective role in the long-term maintenance of cognition. Amongst healthy older adults, more managerial or supervisory experiences in midlife are linked to a slower hippocampal atrophy rate in late life. Yet whether similar links exist in individuals with Mild Cognitive Impairment (MCI) is not known, nor whether these differences have any functional implications. 68 volunteers from the Sydney SMART Trial, diagnosed with non-amnestic MCI, were divided into high and low managerial experience (HME/LME) during their working life...
November 15, 2016: Brain Imaging and Behavior
https://www.readbyqxmd.com/read/27843770/cost-effectiveness-analysis-of-heat-and-moisture-exchangers-in-mechanically-ventilated-critically-ill-patients
#13
Mayra Goncalves Menegueti, Maria Auxiliadora-Martins, Altacilio Aparecido Nunes
BACKGROUND: Moisturizing, heating and filtering gases inspired via the mechanical ventilation (MV) circuits help to reduce the adverse effects of MV. However, there is still no consensus regarding whether these measures improve patient prognosis, shorten MV duration, decrease airway secretion and lower the incidence of ventilator associated pneumonia (VAP) and other complications. OBJECTIVES: The aim of this study was to study the incremental cost-effectiveness ratio associated with the use of heat and moisture exchangers (HME) filter to prevent VAP compared with the heated humidifiers (HH) presently adopted by intensive care unit (ICU) services within the Brazilian Healthcare Unified System...
August 2016: Anesthesiology and Pain Medicine
https://www.readbyqxmd.com/read/27761218/bilateral-scapulothoracic-osteochondromas-in-a-patient-with-hereditary-multiple-exostosis-a-case-report-and-review-of-the-literature
#14
Markus Rupp, Jendrik Hardes, Michael J Raschke, Adrian Skwara
Hereditary multiple exostosis (HME) is an autosomal dominant disorder characterized by two or more benign growing, cartilage capped tumors of long bones called osteochondromas. If abnormal growth and clinical symptoms of osteochondromas newly appear in adults, malignant transformation of the usually benign growing tumors should be suspected and diagnostic testing should be initiated. Against the background of hypothesized higher malignant transformation of osteochondromas into chondrosarcoma in individuals with shoulder exostoses, we report a case of bilateral scapulothoracic osteochondromas in a patient suffering from HME...
September 19, 2016: Orthopedic Reviews
https://www.readbyqxmd.com/read/27747867/the-development-of-sustained-release-drug-delivery-platforms-using-melt-extruded-cellulose-based-polymer-blends
#15
Matthew R Wilson, David S Jones, Gavin P Andrews
OBJECTIVES: This research examined the application of hot melt extrusion (HME) in the preparation of matrix formulations containing hydroxypropyl cellulose (HPC) as a base polymer in combination with methyl cellulose (MC) and hydroxypropyl methylcellulose (HPMC). METHODS: The limit to which formulations could control drug release under varying paddle speeds, high alcohol environments and high and low drug loads was investigated on a Caleva 10 ST dissolution tester...
January 2017: Journal of Pharmacy and Pharmacology
https://www.readbyqxmd.com/read/27687637/hot-melt-extrusion-as-a-continuous-manufacturing-process-to-form-ternary-cyclodextrin-inclusion-complexes
#16
Justine Thiry, Fabrice Krier, Shenelka Ratwatte, Jean-Michel Thomassin, Christine Jerome, Brigitte Evrard
The aim of this study was to evaluate hot-melt extrusion (HME) as a continuous process to form cyclodextrin (CD) inclusion complexes in order to increase the solubility and dissolution rate of itraconazole (ITZ), a class II model drug molecule of the Biopharmaceutics Classification System. Different CD derivatives were tested in a 1:1 (CD:ITZ) molar ratio to obtain CD ternary inclusion complexes in the presence of a polymer, namely Soluplus(®) (SOL). The CD used in this series of experiments were β-cyclodextrin (βCD), hydroxypropyl-β-cyclodextrin (HPβCD) with degrees of substitution of 0...
January 1, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/27686052/a-comparative-study-between-melt-granulation-compression-and-hot-melt-extrusion-injection-molding-for-the-manufacturing-of-oral-sustained-release-thermoplastic-polyurethane-matrices
#17
G Verstraete, P Mertens, W Grymonpré, P J Van Bockstal, T De Beer, M N Boone, L Van Hoorebeke, J P Remon, C Vervaet
During this project 3 techniques (twin screw melt granulation/compression (TSMG), hot melt extrusion (HME) and injection molding (IM)) were evaluated for the manufacturing of thermoplastic polyurethane (TPU)-based oral sustained release matrices, containing a high dose of the highly soluble metformin hydrochloride. Whereas formulations with a drug load between 0 and 70% (w/w) could be processed via HME/(IM), the drug content of granules prepared via melt granulation could only be varied between 85 and 90% (w/w) as these formulations contained the proper concentration of binder (i...
November 20, 2016: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/27645428/modified-release-itraconazole-amorphous-solid-dispersion-to-treat-aspergillus-fumigatus-importance-of-the-animal-model-selection
#18
Julien P Maincent, Laura K Najvar, William R Kirkpatrick, Siyuan Huang, Thomas F Patterson, Nathan P Wiederhold, Jay I Peters, Robert O Williams
Previously, modified release itraconazole in the form of a melt-extruded amorphous solid dispersion based on a pH dependent enteric polymer combined with hydrophilic additives (HME-ITZ), exhibited improved in vitro dissolution properties. These properties agreed with pharmacokinetic results in rats showing high and sustained itraconazole (ITZ) systemic levels. The objective of the present study was to better understand the best choice of rodent model for evaluating the pharmacokinetic and efficacy of this orally administered modified release ITZ dosage form against invasive Aspergillus fumigatus...
October 5, 2016: Drug Development and Industrial Pharmacy
https://www.readbyqxmd.com/read/27640246/adaptation-of-pharmaceutical-excipients-to-fdm-3d-printing-for-the-fabrication-of-patient-tailored-immediate-release-tablets
#19
Muzna Sadia, Agata Sośnicka, Basel Arafat, Abdullah Isreb, Waqar Ahmed, Antonios Kelarakis, Mohamed A Alhnan
This work aims to employ fused deposition modelling 3D printing to fabricate immediate release pharmaceutical tablets with several model drugs. It investigates the addition of non-melting filler to methacrylic matrix to facilitate FDM 3D printing and explore the impact of (i) the nature of filler, (ii) compatibility with the gears of the 3D printer and iii) polymer: filler ratio on the 3D printing process. Amongst the investigated fillers in this work, directly compressible lactose, spray-dried lactose and microcrystalline cellulose showed a level of degradation at 135°C whilst talc and TCP allowed consistent flow of the filament and a successful 3D printing of the tablet...
November 20, 2016: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/27639153/hemimandibular-elongation-is-the-corrected-occlusion-maintained-long-term-does-the-mandible-continue-to%C3%A2-grow
#20
Jeffrey C Posnick, Jorge Perez, Anish Chavda
PURPOSE: The purpose of this study was to assess for the maintenance of a corrected occlusion and ongoing mandibular growth in a group of patients younger than 26 years with hemimandibular elongation (HME) who underwent bimaxillary orthognathic reconstruction. MATERIALS AND METHODS: We conducted a retrospective cohort study of HME patients operated on by a single surgeon at 1 institution between 1999 and 2013. At a minimum, all patients underwent Le Fort I and bilateral sagittal ramus osteotomies...
August 24, 2016: Journal of Oral and Maxillofacial Surgery
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