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Polimery W Medycynie

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https://www.readbyqxmd.com/read/28397457/a-retrospective-evaluation-of-anatomical-reinsertion-of-the-distal-biceps-brachii-tendon-using-an-acl-tightrope%C3%A2-rt-with-a-titanium-cortical-button-and-ultra-high-molecular-weight-polyethylene-suture-a-preliminary-report
#1
Jarosław Witkowski, Maciej Kentel, Aleksandra Królikowska, Paweł Reichert
BACKGROUND: Various surgical techniques for treating distal biceps brachii tendon injury have been described, and to date there is no consensus regarding the preferred fixation method for the anatomic reinsertion of the ruptured tendon. OBJECTIVES: The aim of the study was to clinically and functionally evaluate the upper limb after surgical anatomic reinsertion of the distal biceps brachii tendon using an ACL TightRope® RT with a titanium cortical button and ultra high molecular weight polyethylene (UHMWPE) suture, and to assess postoperative complications...
July 2016: Polimery W Medycynie
https://www.readbyqxmd.com/read/28397456/postoperative-knee-joint-stability-following-anterior-cruciate-ligament-reconstruction-using-the-ligament-advanced-reinforcement-system
#2
Sebastian Krupa, Aleksandra Królikowska, Paweł Reichert
BACKGROUND: One of the goals of the synthetic materials used in knee joint reconstruction of the anterior cruciate ligament (ACL) is to improve the strength and stability of the graft immediately after the reconstruction. One of the synthetic grafts is a non-absorbable synthetic ligament device made of terephthalic polyethylene polyester fibers, the Ligament Advanced Reinforcement System (LARS). OBJECTIVES: The aim of the study was to assess postoperative knee joint stability in patients who had undergone ACL reconstruction using the LARS graft...
July 2016: Polimery W Medycynie
https://www.readbyqxmd.com/read/28397455/-application-of-synthetic-and-semisynthetic-polymers-kollidon-k30-and-hydroxypropylmethylcellulose-as-carriers-of-ketoprofen-in-solid-oral-prolonged-release-dosage-forms
#3
Wojciech Linka, Mateusz Kot, Michał Kołodziejczyk
BACKGROUND: One of the most important challenges of the modern technology of solid oral dosage forms is to increase the effectiveness of the drug, reduce side effects and improve the comfort of use. One way to obtain such effects are prolonged release dosage forms. OBJECTIVES: The aim of the study was to investigate the suitability of polymers (synthetic - Kollidon K30 and semisynthetic - hydroxypropyl methylcellulose), and calcium hydrogen phosphate dihydrate - as an inorganic insoluble filler - in the construction of the matrices of the solid oral dosage forms containing non-steroidal anti-inflammatory drugs (NSAIDs)...
July 2016: Polimery W Medycynie
https://www.readbyqxmd.com/read/28397454/histological-evaluation-of-the-local-soft-tissue-reaction-after-implanting-resorbable-and-non-resorbable-monofilament-fibers
#4
Bogusława Żywicka, Maria Szymonowicz, Danuta Bryła, Zbigniew Rybak
BACKGROUND: The development of technologies and scientific disciplines connected with medical implantation devices is dynamically affecting modern treatments by contemporary medicine and veterinary medicine; it also entails a need to monitor their impact on living organisms. OBJECTIVES: The aim of the study was to conduct a comparative histological evaluation of the response of soft tissues after implanting monofilament fibers from resorbable glyconate and from non-resorbable polypropylene (PP) and polyamide (PA) in rats...
July 2016: Polimery W Medycynie
https://www.readbyqxmd.com/read/28397453/the-effect-of-curing-light-intensity-on-free-volume-size-in-some-dental-composites
#5
Mahdieh Shirazinia, Ali Akbar Mehmandoost-Khajeh-Dad, Vahid Dehghani, Jamshid Mehmandoost-Khajeh-Dad, Morteza Khaghani
BACKGROUND: Dental composite resins - reinforced polymers - are types of synthetic resins that are used in dentistry as restorative material or adhesives. The effect of curing-light intensity on free volume sizes of 4 commercial dental composites has been studied by means of the well-known positron annihilation lifetime spectroscopy technique. OBJECTIVES: The aim of the study was to compare the photosensitivity of 4 commercial dimethacrylate-based dental composites...
July 2016: Polimery W Medycynie
https://www.readbyqxmd.com/read/28397452/investigation-and-optimization-of-the-effect-of-polymers-on-drug-release-of-norfloxacin-from-floating-tablets
#6
Dipak D Gadade, Kalpana Sarda, Sadhana R Shahi
BACKGROUND: Norfloxacin is fluoroquinolone anti-infective used in the treatment of urinary tract infections, prostatitis, gonorrhea and genital tract infections. It has plasma half life of 3 to 4 h requiring multiple dosing in the treatment. Releaseretarding polymers can be used to modulate the drug release of norfloxacin. OBJECTIVES: The objective of this study was to investigate the effect of release-retarding polymers on the drug release of norfloxacin from floating tablets...
July 2016: Polimery W Medycynie
https://www.readbyqxmd.com/read/28397451/the-stress-relaxation-process-in-sutures-tied-with-a-surgeon-s-knot-in-a-simulated-biological-environment
#7
Aneta Liber-Kneć, Sylwia Łagan
BACKGROUND: The exact characteristics of sutures are not only the basis for selecting from among different types of suture, but also provide the necessary information for the design of new surgical sutures. Apart from information relating to the breaking load of a suture reported in pharmacopoeias, the viscoelastic properties of sutures can be an additional selection criterium - one that influences stitching quality, especially when there is a risk of wound dehiscence. OBJECTIVES: The aim of the study was to assess the stress relaxation process for 3 polymeric sutures in an environment simulating the conditions in a living organism and (for comparison) in room conditions...
July 2016: Polimery W Medycynie
https://www.readbyqxmd.com/read/28397425/polymers-as-carriers-of-gentamicin-in-traumatology-and-orthopedic-surgery-current-state-of-knowledge
#8
REVIEW
Jarosław Witkowski, Witold Wnukiewicz, Paweł Reichert
Osteomyelitis in patients undergoing surgery because of injuries and diseases of the musculoskeletal system is a serious clinical, economic and social problem. It is one of the greatest therapeutic challenges in traumatology and orthopedic surgery. To achieve the best results in the treatment of osteomyelitis, surgical debridement and intravenous antibiotic therapy is supported by local antibiotic delivery. Many different substances can be used as drug carriers. In this study we present and compare some polymers used as carriers of gentamicin...
January 2016: Polimery W Medycynie
https://www.readbyqxmd.com/read/28397424/chemical-substances-used-in-the-treatment-of-ganglions-located-in-the-hand-and-wrist
#9
REVIEW
Sebastian Kuliński, Olga Gutkowska, Jerzy Gosk
The aim of this work was to compare different chemical substances used in the treatment of ganglions located in the hand and wrist region. Their basic properties and mechanisms of action have been described. Moreover, the risks associated with the use of particular substances have been highlighted and potential complications connected with their administration have been discussed. On the basis of the available literature, the results of ganglion aspiration treatment followed by an injection of a chemical substance into the cyst cavity have been assessed...
January 2016: Polimery W Medycynie
https://www.readbyqxmd.com/read/28397423/corneal-cross-linking-an-example-of-photoinduced-polymerization-as-a-treatment-modality-in-keratoconus
#10
REVIEW
Magdalena Kubrak-Kisza, Krystian Jerzy Kisza, Marta Misiuk-Hojło
The cornea is one of the principal refractive elements in the human eye and plays a crucial role in the process of vision. Keratoconus is the most common corneal dystrophy, found mostly among young adults. It is characterized by a reduced number of collagen cross-links in the corneal stroma, resulting in reduced biomechanical stability and an abnormal shape of the cornea. These changes lead to progressive myopia, corneal thinning, central scarring and irregular astigmatism, causing severely impaired vision...
January 2016: Polimery W Medycynie
https://www.readbyqxmd.com/read/28397422/thermoplastic-elastomers-materials-for-heart-assist-devices
#11
REVIEW
Agnieszka Piegat, Mirosława El Fray
Heart assisting devices have become a standard element in clinical practice and provide support for the traditional methods of treating heart disease. Regardless of the construction of VAD (ventricular assist devices), there are crucial requirements that have to be met by the construction materials: high purity, desired physical, chemical and mechanical properties, easy fabrication and high stability and susceptibility to sterilization. They must not cause thrombosis, destroy cellular elements, alter plasma protein, destroy enzymes, deplete electrolytes, cause immune response and cancer, and must not produce toxic and allergic reactions, when they are applied in direct contact with biological tissues and fluids...
January 2016: Polimery W Medycynie
https://www.readbyqxmd.com/read/28397421/-methods-of-reduction-of-warm-ischemic-time-in-kidney-transplantation-and-their-role-of-early-and-late-outcomes
#12
REVIEW
Agnieszka Lepiesza, Paweł Chudoba, Dorota Kamińska, Artur Pupka, Patrycja Zaleska
Kidney is the organ transplanted most often. An increase in the number of expanded criteria donors (ECD) has been observed for years, and consequently the condition of transplanted organs worsened. In recent years, the possibility to recover organs from donors after cardiac death (DCD) became legally available in Poland, which will result in the increase of donors. Every DCD donor is at the same time ECD donor. One of the most important challenges the transplantology has to face is the improvement of the quality of transplanted organs...
January 2016: Polimery W Medycynie
https://www.readbyqxmd.com/read/28397420/-vascular-system-infections-characteristics-risk-factors-prevention-methods-and-economic-impact
#13
REVIEW
Benita Wiatrak, Ewa Karuga-Kuźniewska, Arleta Staszuk, Justyna Gabryś, Ryszard Tadeusiewicz
One of the main problems of modern medicine are infections. They can be divided into local and general (depending on infected tissues and/or organs) or hospital and community-acquired infections (depending on the location and source of infection). The occurrence of infection reduces the ability for quick recovery, and in case of complications the ability to continue professional activity. Bacteria can be present in the vascular system causing vein, artery, capillary infection or blood infection (bacteremia)...
January 2016: Polimery W Medycynie
https://www.readbyqxmd.com/read/28397419/comparison-of-bioabsorbable-interference-screws-composed-of-poly-l-lactic-acid-and-hydroxyapatite-plla-ha-to-washerloc-tibial-fixation-in-patients-after-anterior-cruciate-ligament-reconstruction-of-the-knee-joint
#14
Mateusz Patkowski, Aleksandra Królikowska, Paweł Reichert
BACKGROUND: The reconstruction of the anterior cruciate ligament (ACL) of the knee joint is a standard in ACL complete rupture treatment in athletes. One of the weakest points of this procedure is tibial fixation of grafts. OBJECTIVES: The aim was, firstly, to evaluate patients 3-4 years after primary ACL reconstruction with the use of autologous ipsilateral STGR grafts and with tibial fixation using a bioabsorbable interference screw composed of PLLA-HA or WasherLoc, comparing the postoperative result to the preoperative condition and, secondly, to compare the results between the two groups of patients with different tibial fixation...
January 2016: Polimery W Medycynie
https://www.readbyqxmd.com/read/28397418/formulation-and-evaluation-of-oral-dissolving-films-of-amlodipine-besylate-using-blends-of-starches-with-hydroxypropyl-methyl-cellulose
#15
John Oluwasogo Ayorinde, Michael Ayodele Odeniyi, Olalekan Balogun-Agbaje
BACKGROUND: Natural polymers serve as cheap, non-toxic, biocompatible excipients in oral drug delivery. These advantages inform their uses in the design of drug dosage forms. OBJECTIVES: The aim of the study was to prepare and evaluate oral dissolving films of amlodipine besylate, an anti-hypertensive drug, using starch/polymer blends. MATERIAL AND METHODS: Bambara nut (BAM) and the African yam bean (AYB) starches were individually blended with hydroxypropyl methyl cellulose (HPMC)...
January 2016: Polimery W Medycynie
https://www.readbyqxmd.com/read/28397417/material-and-compression-properties-of-cedrela-odorata-gum-co-processed-with-plantain-starch-and-microcrystalline-cellulose
#16
Oladapo Adewale Adetunji, Michael Ayodele Odeniyi
BACKGROUND: Many excipients used in tableting exhibit some undesirable properties such as poor flow, cohesion and lubricating characteristics, thus necessitating some modification to achieve the desired product. OBJECTIVES: The objective of this study was to enhance the material, flow and compressional properties of Cedrela odorata gum (COG) (Family: Meliaceae) by co-processing with plantain starch (PS) and microcrystalline cellulose (MCC). MATERIAL AND METHODS: The COG was co-processed with PS (or MCC) by physical co-grinding at ratio 1 : 1, 1 : 2 and 1 : 4, and characterized using morphological analysis, swelling index viscosity measurements, particle size analysis and FTIR spectra...
January 2016: Polimery W Medycynie
https://www.readbyqxmd.com/read/28397416/development-of-ocular-delivery-system-for-glaucoma-therapy-using-natural-hydrogel-as-film-forming-agent-and-release-modifier
#17
Giriraj T Kulkarni, Nitin Sethi, Rajendra Awasthi, Vivek Kumar Pawar, Vineet Pahuja
BACKGROUND: Glaucoma is characterized by increased intraocular pressure, which results in damage to the optic nerve. The existing therapy with conventional eye drops is inefficient due to nasolachrymal drainage, resulting in a reduced corneal residence of the drug. OBJECTIVES: The objective was to develop controlled-release ocular films of timolol maleate using natural hydrogel from Tamarindus indica seeds as a sustaining and film-forming agent, to overcome the problems associated with eye drops...
January 2016: Polimery W Medycynie
https://www.readbyqxmd.com/read/28397415/investigation-of-the-degree-of-disorder-of-the-structure-of-polymer-soft-contact-lenses-using-positron-annihilation-lifetime-spectroscopy-pals
#18
Jacek Filipecki, Katarzyna Kotynia, Katarzyna Filipecka
BACKGROUND: Hydrogel and silicone-hydrogel polymeric materials are widely used in ophthalmology for the manufacture of contact lenses. An important aspect is the investigation of the structure of these materials. OBJECTIVES: This study has been conducted in order to compare the degree of disorder and presence of free volumes in the internal structure of the polymeric soft contact lenses Omafilcon A (hydrogel) and Comfilcon A (silicone-hydrogel). Differences in the occurrence of trapping centers for positrons and free volumes between the types of investigated contact lenses have been demonstrated...
January 2016: Polimery W Medycynie
https://www.readbyqxmd.com/read/28397414/development-of-bilayer-tablets-with-modified-release-of-selected-incompatible-drugs
#19
Neha Dhiman, Rajendra Awasthi, Shammy Jindal, Smriti Khatri, Kamal Dua
BACKGROUND: The oral route is considered to be the most convenient and commonly-employed route for drug delivery. When two incompatible drugs need to be administered at the same time and in a single formulation, bilayer tablets are the most appropriate dosage form to administer such incompatible drugs in a single dose. OBJECTIVES: The aim of the present investigation was to develop bilayered tablets of two incompatible drugs; telmisartan and simvastatin. MATERIAL AND METHODS: The bilayer tablets were prepared containing telmisartan in a conventional release layer using croscarmellose sodium as a super disintegrant and simvastatin in a slow-release layer using HPMC K15M, Carbopol 934P and PVP K 30 as matrix forming polymers...
January 2016: Polimery W Medycynie
https://www.readbyqxmd.com/read/26994891/-the-use-of-polymers-for-intraocular-lenses-in-cataract-surgery
#20
REVIEW
Anna Fizia-Orlicz, Marta Misiuk-Hojło
According to the World Health Organization, cataract remains the leading cause of the curable visual impairment worldwide. Cataract can only be cured by surgery during which the cloudy lens is replaced with an artificial intraocular lens. It is one of the most common surgeries being performed worldwide. There are age-related, congenital, traumatic and metabolic types of cataract which have been distinguished. Age-related cataract is the most common one and it affects people over 60 with the greatest frequency...
July 2015: Polimery W Medycynie
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