keyword
MENU ▼
Read by QxMD icon Read
search

hemostatic chitosan

keyword
https://www.readbyqxmd.com/read/29210513/the-efficacy-of-a-novel-budesonide-chitosan-gel-on-wound-healing-following-endoscopic-sinus-surgery
#1
Thanh Ha, Rowan Valentine, Stephen Moratti, Lyall Hanton, Simon Robinson, Peter-John Wormald
BACKGROUND: Adhesion formation and ostial stenosis are common causes of surgical failure after endoscopic sinus surgery (ESS). Postoperative topical steroid application has been shown to improve wound healing. Chitosan-dextran gel (CD gel) is an effective hemostatic nasal dressing. This study aims to determine the effect of the addition of budesonide to CD gel on postoperative ostial stenosis and adhesion formation following ESS. METHODS: This prospective, blinded, randomized controlled trial was conducted between October 2012 and April 2015...
December 6, 2017: International Forum of Allergy & Rhinology
https://www.readbyqxmd.com/read/29169118/characterization-of-a-microbial-polysaccharide-based-bioflocculant-and-its-anti-inflammatory-and-pro-coagulant-activity
#2
Chunying Zhong, Gang Cao, Kuan Rong, Zhengwu Xia, Ting Peng, Honggao Chen, Jiangang Zhou
We describe a novel bioflocculant, MBF-15, which is an exopolysaccharide extracted from the alkaliphilic bacterium Paenibacillus jamilae. The biophysical characteristics of MBF-15 were determined using Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy. MBF-15 was also evaluated for its biocompatibility by examining its inflammatory, coagulant, and hemostatic properties in vitro and in vivo. Pretreatment of peripheral blood mononuclear cells with MBF-15 inhibited lipopolysaccharide-stimulated expression of inducible nitric oxide synthase, production of nitric oxide, and secretion of pro-inflammatory cytokines, including tumor necrosis factor-α and interleukin-6...
November 16, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/29167067/autoclavable-physically-crosslinked-chitosan-cryogel-as-a-wound-dressing
#3
Takayuki Takei, So Danjo, Shogo Sakoguchi, Sadao Tanaka, Takuma Yoshinaga, Hiroto Nishimata, Masahiro Yoshida
Moist wounds were known to heal more rapidly than dry wounds. Hydrogel wound dressings were suitable for the moist wound healing because of their hyperhydrous structure. Chitosan was a strong candidate as a base material for hydrogel wound dressings because the polymer had excellent biological properties that promoted wound healing. We previously developed physically-crosslinked chitosan cryogels, which were prepared solely by freeze-thawing of a chitosan-gluconic acid conjugate (CG) aqueous solution, for wound treatment...
November 19, 2017: Journal of Bioscience and Bioengineering
https://www.readbyqxmd.com/read/29127318/minimally-invasive-hemostatic-materials-tackling-a-dilemma-of-fluidity-and-adhesion-by-photopolymerization-in-situ
#4
Yun Zhang, Dandan Song, Hong Huang, Zhiling Liang, Houhe Liu, Yugang Huang, Cheng Zhong, Guodong Ye
Hemostasis in vivo is a key to success in minimally invasive surgery (MIS). However, solid hemostatic materials cannot pass through the sheath tube of the MIS apparatus, while liquid ones are restricted by their low adhesion, which leads to them peeling off of tissue. To tackle the dilemma of fluidity and adhesion, a formulation containing a multifunctional sucrose allyl ether (SAE) monomer and an alpha-hydroxyketone liquid photoinitiator (HMPP) was applied as a lead hemostatic material for MIS. Real-time infrared results showed that SAE initiated by HMPP can rapidly polymerize into a transparent crosslinking membrane...
November 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29116465/hemostatic-gauze-based-on-chitosan-and-hydroquinone-preparation-characterization-and-blood-coagulation-evaluation
#5
Roberta Cassano, Maria Luisa Di Gioia, Silvia Mellace, Nevio Picci, Sonia Trombino
This work concerns on the preparation and performance evaluation of a new chitosan hydroquinone based gauze for hemostatic use. Chitosan and hydroquinone were firstly connected by etherification and then linked to the pre-carboxylate gauze. The functionalized material and the chitosan-hydroquinone ether were characterized by Fourier Transform Infrared (FT-IR) Spectroscopy and Differential Scanning Calorimetry (DSC). FT-IR results showed that an esterification occurred on carboxylic group of the gauze. The gauze functionalization degree was also evaluated by volumetric analysis...
November 7, 2017: Journal of Materials Science. Materials in Medicine
https://www.readbyqxmd.com/read/29025669/preparation-and-evaluation-of-squid-ink-polysaccharide-chitosan-as-a-wound-healing-sponge
#6
Na Huang, Jiali Lin, Sidong Li, Yifeng Deng, Songzhi Kong, Pengzhi Hong, Ping Yang, Mingneng Liao, Zhang Hu
A new type of wound healing agent was developed using two marine biomaterials (squid ink polysaccharide and chitosan) as carriers and calcium chloride as an initiator for coagulation. Based on central composite design-response surface methodology, comprehensive evaluation of appearance quality for composite sponges and water absorbency were used as evaluation indices to identify the optimized preparation conditions and further evaluate the performance of the squid ink polysaccharide-chitosan sponge (SIP-CS)...
January 1, 2018: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28990448/evaluation-of-hemostatic-effect-of-polyelectrolyte-complex-based-dressings
#7
Manisha Buriuli, Wasupalli Geeta Kumari, Devendra Verma
The aim of this work was to develop a polyelectrolyte complex-based hemostatic dressing made from chitosan and polygalacturonic acid. Porous dressings were fabricated by ultrasonication of chitosan and alginate solutions followed by freeze-drying. Since chitosan has inherent hemostatic properties, and polygalacturonic acid is anti-inflammatory in nature, it was desired to combine these two polymers to develop an effective hemostatic dressing, which may also promote wound healing. Porous structure of the bandages was observed using field-emission scanning electron microscope...
January 1, 2017: Journal of Biomaterials Applications
https://www.readbyqxmd.com/read/28962752/chitosan-kaolin-composite-porous-microspheres-with-high-hemostatic-efficacy
#8
Xun Sun, Zonghao Tang, Meng Pan, Zhengchao Wang, Hongqin Yang, Haiqing Liu
The hemostatic performance of chitosan was greatly improved by blending it with kaolin to fabricate porous composite microspheres (CSMS-K) through inverse emulsion method combining with thermally induced phase separation. The CSMS-K had high amount of interior and surface pores. The synergetic hemostatic competence of chitosan and kaolin components made the hemostatic efficacy of CSMS-K superior to chitosan porous microspheres (CSMS). The hemostatic time of CSMS-K3 in the rat tail amputation and liver laceration models was down to respective 120 and 99s from 183 and 134s of CSMS, and the blood loss of CSMS-K3 was respectively 65% and 36% of that of CSMS in the rat tail amputation and liver laceration models...
December 1, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28887187/different-chemical-groups-modification-on-the-surface-of-chitosan-nonwoven-dressing-and-the-hemostatic-properties
#9
Dong Yan, Shihao Hu, Zhongzheng Zhou, Shah Zeenat, Feng Cheng, Yang Li, Chao Feng, Xiaojie Cheng, Xiguang Chen
The hemostatic properties of surface modified chitosan nonwoven had been investigated. The succinyl groups, carboxymethyl groups and quaternary ammonium groups were introduced into the surface of chitosan nonwoven (obtained NSCS, CMCS and TMCS nonwoven, respectively). For blood clotting, absorbance value (0.105±0.03) of NSCS1 nonwoven was the smallest (CS 0.307±0.002, NSCS2 0.148±0.002, CMCS1 0.195±0.02, CMCS2 0.233±0.001, TMCS1 0.191±0.002, TMCS2 0.345±0.002), which indicated the stronger hemostatic potential...
September 5, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28864269/uses-of-chitosan-for-treating-different-forms-of-serious-obstetrics-hemorrhages
#10
G Carles, C Dabiri, A Mchirgui, E O Saoudi, N Hcini, K Pouget, B Seve, B de Matteis
Postpartum hemorrhage is a major cause of maternal death worldwide. Many therapeutic strategies have been developed to reduce maternal morbidity and mortality like oxytocin, prostaglandin, and uterine balloons. A new member of the therapeutic arsenal has recently emerged, the chitosan (Celox(®)), used since several years by military doctors to stop bleeding of combat wounds. In 2012, a first study was reported with the successful use of chitosan-coated gauze to treat severe postpartum hemorrhage. We report here four cases of the use of chitosan to treat life-threatening obstetric bleeding...
August 31, 2017: Journal of Gynecology Obstetrics and Human Reproduction
https://www.readbyqxmd.com/read/28842967/zeolite-loaded-alginate-chitosan-hydrogel-beads-as-a-topical-hemostat
#11
Parinaz Fathi, Michael Sikorski, Katerina Christodoulides, Kristen Langan, Yoon Sun Choi, Michael Titcomb, Anjali Ghodasara, Omasiri Wonodi, Hemi Thaker, Mert Vural, Adam Behrens, Peter Kofinas
Hemorrhage is the leading cause of preventable death after a traumatic injury, and the largest contributor to loss of productive years of life. Hemostatic agents accelerate hemostasis and help control hemorrhage by concentrating coagulation factors, acting as procoagulants and/or interacting with erythrocytes and platelets. Hydrogel composites offer a platform for targeting both mechanical and biological hemostatic mechanisms. The goal of this work was to develop hydrogel particles composed of chitosan, alginate, and zeolite, and to assess their potential to promote blood coagulation via multiple mechanisms: erythrocyte adhesion, factor concentration, and the ability to serve as a mechanical barrier to blood loss...
August 26, 2017: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/28836753/potency-and-cytotoxicity-of-a-novel-gallium-containing-mesoporous-bioactive-glass-chitosan-composite-scaffold-as-hemostatic-agents
#12
Sara Pourshahrestani, Ehsan Zeimaran, Nahrizul Adib Kadri, Nicola Gargiulo, Hassan Mahmood Jindal, Sangeetha Vasudevaraj Naveen, Shamala Devi Sekaran, Tunku Kamarul, Mark R Towler
Chitosan-based hemostats are promising candidates for immediate hemorrhage control. However, they have some disadvantages and require further improvement to achieve the desired hemostatic efficiency. Here, a series of 1% Ga2O3-containing mesoporous bioactive glass-chitosan composite scaffolds (Ga-MBG/CHT) were constructed by the lyophilization process and the effect of various concentrations of Ga-MBG (10, 30, and 50 wt %) on the hemostatic function of the CHT scaffold was assessed as compared to that of Celox Rapid gauze (CXR), a current commercially available chitosan-coated hemostatic gauze...
September 20, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28821089/preparation-and-evaluation-of-chitosan-alginate-porous-microspheres-bletilla-striata-polysaccharide-composite-hemostatic-sponges
#13
Chao Wang, Wenfeng Luo, Puwang Li, Sidong Li, Ziming Yang, Zhang Hu, Yangyang Liu, Ningjian Ao
We prepared a novel hemostatic material using chitosan (CS), alginate, and Bletilla striata, which showed good biocompatibility and hemostatic properties. Alginate-calcium porous microspheres (Alg) were prepared by emulsification/cross-linking methods, and Bletilla striata polysaccharide (Bsp) was extracted from the tubers by water extraction and alcohol precipitation. To improve the water absorption and accelerate the blood coagulation, Alg and Bsp were mixed with chitosan solution to form CS/Alg and CS/Alg/Bsp composite sponges by lyophilization...
October 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28773912/highly-absorbent-antibacterial-hemostatic-dressing-for-healing-severe-hemorrhagic-wounds
#14
Ting-Ting Li, Ching-Wen Lou, An-Pang Chen, Mong-Chuan Lee, Tsing-Fen Ho, Yueh-Sheng Chen, Jia-Horng Lin
To accelerate healing of severe hemorrhagic wounds, a novel highly absorbent hemostatic dressing composed of a Tencel(®)/absorbent-cotton/polylactic acid nonwoven base and chitosan/nanosilver antibacterial agent was fabricated by using a nonwoven processing technique and a freeze-drying technique. This study is the first to investigate the wicking and water-absorbing properties of a nonwoven base by measuring the vertical wicking height and water absorption ratio. Moreover, blood agglutination and hemostatic second tests were conducted to evaluate the hemostatic performance of the resultant wound dressing...
September 21, 2016: Materials
https://www.readbyqxmd.com/read/28732897/preparation-and-characterization-of-novel-chitosan-and-%C3%AE-cyclodextrin-polymer-sponges-for-wound-dressing-applications
#15
Claudia Flores, Marco Lopez, Nicolas Tabary, Christel Neut, Feng Chai, Didier Betbeder, Clément Herkt, Frederic Cazaux, Valerie Gaucher, Bernard Martel, Nicolas Blanchemain
Chitosan (CS) presents antibacterial, mucoadhesive and hemostatic properties and is an ideal candidate for wound dressing applications. This work reports the development of sponge-like materials obtained from physical hydrogels after the interaction between CS and a β-cyclodextrin polymer (PCD) in acidic conditions to provoke immediate gelation. Characterization consisted of zeta potential (ZP) measurements, rheology analysis, Fourier transform infrared (FTIR), Raman spectroscopy, wide angle X-ray scattering (WAXS) and scanning electron microscopy (SEM)...
October 1, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28686242/keratin-dissolution-extraction-and-biomedical-application
#16
REVIEW
Amin Shavandi, Tiago H Silva, Adnan A Bekhit, Alaa El-Din A Bekhit
Keratinous materials such as wool, feathers and hooves are tough unique biological co-products that usually have high sulfur and protein contents. A high cystine content (7-13%) differentiates keratins from other structural proteins, such as collagen and elastin. Dissolution and extraction of keratin is a difficult process compared to other natural polymers, such as chitosan, starch, collagen, and a large-scale use of keratin depends on employing a relatively fast, cost-effective and time efficient extraction method...
August 22, 2017: Biomaterials Science
https://www.readbyqxmd.com/read/28625215/assessing-coagulation-by-rotational-thromboelastometry-rotem-in-rivaroxaban-anticoagulated-blood-using-hemostatic-agents
#17
Jonathan Bar, Alexa David, Tarek Khader, Mary Mulcare, Christopher Tedeschi
Introduction The use of direct oral anticoagulants (DOACs) such as rivaroxaban (Xarelto) is increasingly common. However, therapies for reversing anticoagulation in the event of hemorrhage are limited. This study investigates the ability of hemostatic agents to improve the coagulation of rivaroxaban-anticoagulated blood, as measured by rotational thromboelastometry (ROTEM). Hypothesis/Problem If a chitosan-based hemostatic agent (Celox), which works independently of the clotting cascade, is applied to rivaroxaban-anticoagulated blood, it should improve coagulation by decreasing clotting time (CT), decreasing clot formation time (CFT), and increasing maximum clot firmness (MCF)...
October 2017: Prehospital and Disaster Medicine
https://www.readbyqxmd.com/read/28532047/porous-chitosan-microspheres-for-application-as-quick-in-vitro-and-in-vivo-hemostat
#18
Jixiang Li, Xiaowei Wu, Yanqing Wu, Zonghao Tang, Xun Sun, Meng Pan, Yufeng Chen, Juanjuan Li, Rongdong Xiao, Zhengchao Wang, Haiqing Liu
Controlling massive hemorrhage is of great importance to lower transfusional medical cost, and to reduce death and mobility rate in battlefield and civilian accidents. We reported the fabrication of porous chitosan microspheres (CSMS) with tunable surface pore size by microemulsion combined with thermally induced phase separation technique, and its application as a quick hemostat. Their hemostatic property was characterized by blood clotting kinetics, adherence interaction between red blood cells/platelets and CSMS, in vitro and in vivo hemostasis by rat tail amputation and liver laceration models, and histological analysis...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28521997/biodegradable-collagen-sponge-reinforced-with-chitosan-calcium-pyrophosphate-nanoflowers-for-rapid-hemostasis
#19
Tingsheng Yan, Feng Cheng, Xinjing Wei, Yudong Huang, Jinmei He
Efficient and biodegradable hemostatic materials become increasingly important in civilian and military clinical. However, traditional hemostatic materials are difficult to achieve expected effects especially in parenchymal organs with rich vascularity. In facing these challenges, we designed a biodegradable collagen sponge reinforced with chitosan/calcium pyrophosphate nanoflowers (CPNFs-Col sponge) for rapid hemostasis. With specific performances, such as rapid water absorption ability, the positive surface rich in amino groups and high specific surface area (952...
August 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28452963/bioresponsive-materials-for-drug-delivery-based-on-carboxymethyl-chitosan-poly-%C3%AE-glutamic-acid-composite-microparticles
#20
Xiaoting Yan, Zongrui Tong, Yu Chen, Yanghe Mo, Huaiyu Feng, Peng Li, Xiaosai Qu, Shaohua Jin
Carboxymethyl chitosan (CMCS) microparticles are a potential candidate for hemostatic wound dressing. However, its low swelling property limits its hemostatic performance. Poly(γ-glutamic acid) (PGA) is a natural polymer with excellent hydrophilicity. In the current study, a novel CMCS/PGA composite microparticles with a dual-network structure was prepared by the emulsification/internal gelation method. The structure and thermal stability of the composite were determined by Fourier transform infrared spectroscopy (FTIR), X-ray powder diffraction (XRD), scanning electron microscope (SEM), X-ray photoelectron spectroscopy (XPS), and thermogravimetric analysis (TGA)...
April 28, 2017: Marine Drugs
keyword
keyword
101620
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"