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https://www.readbyqxmd.com/read/28540173/self-microemulsifying-drug-delivery-system-for-improving-the-bioavailability-of-huperzine-a-by-lymphatic-uptake
#1
Fang Li, Rongfeng Hu, Bin Wang, Yun Gui, Gang Cheng, Song Gao, Lei Ye, Jihui Tang
Huperzine A (Hup-A) is a poorly water-soluble drug with low oral bioavailability. A self-microemulsifying drug delivery system (SMEDDS) was used to enhance the oral bioavailability and lymphatic uptake and transport of Hup-A. A single-pass intestinal perfusion (SPIP) technique and a chylomicron flow-blocking approach were used to study its intestinal absorption, mesenteric lymph node distribution and intestinal lymphatic uptake. The value of the area under the plasma concentration-time curve (AUC) of Hup-A SMEDDS was significantly higher than that of a Hup-A suspension (P<0...
May 2017: Acta Pharmaceutica Sinica. B
https://www.readbyqxmd.com/read/28536446/preparation-characterization-and-pharmacokinetics-of-cyadox-nanosuspension
#2
Adeel Sattar, Dongmei Chen, Lishun Jiang, Yuanhu Pan, Yanfei Tao, Lingli Huang, Zhenli Liu, Shuyu Xie, Zonghui Yuan
An increase in number of newly developed synthetic drugs displays bioavailability constraints because of poor water solubility. Nanosuspensions formulation may help to overwhelm these problems by increasing dissolution velocity and saturation solubility. In the present study, cyadox (Cyx) nanosuspension was successfully prepared by recrystallization based on acid-base neutralization combined with high pressure homogenization method using Polyvinylpyrrolidone K30 (PVP) as stabilizer. The nanosuspension had uniform particle distribution, excellent sedimentation rate and redispersibility...
May 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28524038/-intervention-effect-of-qingzao-runfei-huazhuo-xingxue-decoction-on-pm2-5-induced-pulmonary-injury-in-mice
#3
Jinbo Zhang, Lei Zhang, Yanxia Chen, Xinlu Wang, Aihua Hou, Lingling Dai
OBJECTIVE: To study the effects of Qingzao Runfei Huazhuo Xingxue decoction (QRHXD) on inflammatory reaction and histopathology in mice with PM2.5-induced pulmonary injury, and to approach the possible mechanism of prevention and treatment of traditional Chinese medicine on lung injury induced by haze. METHODS: Fifty healthy male C57BL/6 mice were randomly divided into five groups (n = 10): namely control, PM2.5, PM2.5 + low-, moderate-, and high-dose groups. The PM2...
May 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/28516961/supracricoid-partial-laryngectomy-with-crico-hyoido-epiglottopexy-for-glottic-carcinoma-with-anterior-commissure-involvement
#4
I Atallah, E Berta, A Coffre, J Villa, E Reyt, C A Righini
Glottic cancers discovered at an early stage (T1-T2) can be treated with either radiotherapy or surgery. The aim of our study is to analyse survival and functional results of supra-cricoid partial laryngectomy (SCPL) with crico-hyoido-epiglottopexy (CHEP) as surgical treatment for glottic carcinoma with anterior commissure involvement. We performed a retrospective study (1996-2013) which included patients who underwent SCPL-CHEP for glottic squamous cell carcinoma with involvement of the anterior commissure...
June 2017: Acta Otorhinolaryngologica Italica
https://www.readbyqxmd.com/read/28516414/optimized-mucoadhesive-coated-niosomes-as-a-sustained-oral-delivery-system-of-famotidine
#5
Al-Zahraa M Khalifa, Bazigha K Abdul Rasool
The objective of this study is to develop an oral formulation of famotidine niosomes coated with a mucoadhesive polymer, chitosan. Famotidine (FMT) has low oral bioavailability of 40-45% and short half-life between 2.5 to 4 h. Famotidine is classified as class IV in BCS because of its low aqueous solubility (0.1% w/v) and low permeability. Thus, FMT was loaded to the bioadhesive coated niosomes to improve its solubility, enhance its oral bioavailability, and sustain FMT release pattern. Different formulations were prepared by thin-film hydration method and characterized in terms of entrapment efficiency, morphological features, vesicle size, and zeta potential...
May 17, 2017: AAPS PharmSciTech
https://www.readbyqxmd.com/read/28512699/an-open-label-crossover-study-of-the-pharmacokinetics-of-the-60-mg-edoxaban-tablet-crushed-and-administered-either-by-a-nasogastric-tube-or-in-apple-puree-in-healthy-adults
#6
Kenneth Duchin, Anil Duggal, George J Atiee, Motonori Kidokoro, Tadanobu Takatani, Nicole Lazarus Shipitofsky, Ling He, George Zhang, Tarundeep Kakkar
BACKGROUND: Edoxaban is an orally active, direct factor Xa inhibitor indicated to reduce the risk of stroke and systemic embolism in non-valvular atrial fibrillation and for the treatment of venous thromboembolism. OBJECTIVES: This study assessed the pharmacokinetics, safety, and tolerability of the edoxaban 60-mg tablet crushed and administered via a nasogastric tube in a water suspension or orally mixed in apple puree. METHODS: This phase 1, open-label, crossover study randomized 30 healthy adults to receive three edoxaban treatment regimens (oral 60-mg edoxaban tablet, or 60-mg edoxaban tablet crushed and administered via a nasogastric tube or orally in apple puree) in one of six treatment sequences...
May 17, 2017: Clinical Pharmacokinetics
https://www.readbyqxmd.com/read/28509671/complications-in-facial-mohs-defect-reconstruction
#7
Angelique M Berens, Sarah R Akkina, Sapna A Patel
PURPOSE OF REVIEW: To review the recent literature in regards to complications after reconstruction of Mohs defects, outline common pitfalls and to discuss the literature on avoiding complications as outlined per aesthetic subunit. RECENT FINDINGS: Complications in facial Mohs reconstruction commonly consist of infection, wound necrosis and dehiscence, hematoma and suboptimal scarring. However, site-specific complications such as hairline or eyebrow distortion, eyelid retraction or ectropion, nasal contour abnormality, alar retraction, nasal valve compromise, significant facial asymmetry or even oral incompetence must also be considered...
May 13, 2017: Current Opinion in Otolaryngology & Head and Neck Surgery
https://www.readbyqxmd.com/read/28507434/enhanced-oral-bioavailability-of-valsartan-using-a-polymer-based-supersaturable-self-microemulsifying-drug-delivery-system
#8
Dong Woo Yeom, Bo Ram Chae, Ho Yong Son, Jin Han Kim, Jun Soo Chae, Seh Hyon Song, Dongho Oh, Young Wook Choi
A novel, supersaturable self-microemulsifying drug delivery system (S-SMEDDS) was successfully formulated to enhance the dissolution and oral absorption of valsartan (VST), a poorly water-soluble drug, while reducing the total quantity for administration. Poloxamer 407 is a selectable, supersaturating agent for VST-containing SMEDDS composed of 10% Capmul(®) MCM, 45% Tween(®) 20, and 45% Transcutol(®) P. The amounts of SMEDDS and Poloxamer 407 were chosen as formulation variables for a 3-level factorial design...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28506854/long-term-safety-and-efficacy-of-solifenacin-in-children-and-adolescents-with-overactive-bladder
#9
Donald Newgreen, Brigitte Bosman, Adriana Hollestein-Havelaar, Ellen Dahler, Robin Besuyen, Robert Snijder, Will Sawyer, Søren Rittig, Stéphane Bolduc
PURPOSE: To evaluate long-term safety and efficacy of once-daily oral solifenacin suspension in children (aged 5-<12 years) and adolescents (aged 12-<18 years) with overactive bladder. MATERIALS AND METHODS: 40-week, open-label extension of a 12-week double-blind, placebo-controlled trial. OUTCOME MEASURES: incidence and severity of adverse events (primary endpoint), laboratory variables, vital signs, 12-lead electrocardiogram, post-void residual volume, change from baseline to end of treatment in: mean number of micturitions and incontinence episodes/24 hours, number of incontinence-free days/7 days, number of grade 3 or 4 urgency episodes/24 hours (adolescents only)...
May 12, 2017: Journal of Urology
https://www.readbyqxmd.com/read/28503995/preparation-and-characterization-of-surface-modified-plga-polymeric-nanoparticles-used-to-target-treatment-of-intestinal-cancer
#10
Niyaz Ahmad, Md Aftab Alam, Rizwan Ahmad, Atta Abbas Naqvi, Farhan Jalees Ahmad
Docetaxel (DTX), a cytotoxic taxane, is a poor water-soluble drug and exhibits less oral bioavailability. Current research investigates the effective transport, for DTX-loaded chitosan (CS)-coated-poly-lactide-co-glycolide (PLGA)-nanoparticles (NPs) (DTX-CS-PLGA-NPs) and DTX-PLGA-NPs as well as a novel third-generation P-gp inhibitor i.e. GF120918 (Elacridar), across intestinal epithelium with its successive uptake by the tumour cells in an in vitro model. The prepared NPs showed a spherical shape particle size i...
May 14, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/28503949/silymarin-nanoemulsion-against-human-hepatocellular-carcinoma-development-and-optimization
#11
Usama Ahmad, Juber Akhtar, Satya Prakash Singh, Farhan Jalees Ahmad, Sahabjada Siddiqui
OBJECTIVE: Nanoemulsion of silymarin was developed and optimized. MATERIALS AND METHODS: Nanoemulsion was made by aqueous titration method. Sefsol 218 (5.8% v/v), Kolliphor RH40 and polyethylene glycol 400 (Smix; 2:1; 28.99% v/v) were used as oil phase, surfactant and co-surfactant while distilled water (65.22% v/v) acted as an aqueous phase. Nanoemulsion was characterized on the basis of particle size, viscosity, electrical conductivity and refractive index. Further, in vitro release, in vivo pharmacokinetic study, stability study and cancer cell line studies were also performed...
May 14, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/28503895/quantitative-comparative-analysis-of-the-nasal-chemosensory-organs-of-anurans-during-larval-development-and-metamorphosis-highlights-the-relative-importance-of-chemosensory-subsystems-in-the-group
#12
Lucas David Jungblut, John O Reiss, Dante A Paz, Andrea G Pozzi
The anuran peripheral olfactory system is composed of a number of subsystems, represented by distinct neuroepithelia. These include the main olfactory epithelium and vomeronasal organ (found in most tetrapods) and three specialized epithelia of anurans: the buccal-exposed olfactory epithelium of larvae, and the olfactory recess and middle chamber epithelium of postmetamorphic animals. To better characterize the developmental changes in these subsystems across the life cycle, morphometric changes of the nasal chemosensory organs during larval development and metamorphosis were analyzed in three different anuran species (Rhinella arenarum, Hypsiboas pulchellus, and Xenopus laevis)...
May 14, 2017: Journal of Morphology
https://www.readbyqxmd.com/read/28499946/lipid-drug-conjugate-nanoparticle-as-a-potential-nanocarrier-for-the-oral-delivery-of-pemetrexed-diacid-formulation-design-characterization-ex-vivo-and-in-vivo-assessment
#13
Kriti Soni, Ali Mujtaba, Kanchan Kohli
The present work was to develop lipid drug conjugated (LDC) nanoparticles for the potential oral delivery of pemetrexed diacid (PTX) and evaluation of its in vitro, ex vivo and in vivo potentials. The LDC was prepared by salt formation of PTX with stearic acid and followed by cold homogenization technique to produce the LDC nanoparticles. FTIR analysis of LDC proved the presence of amide bond in LDC powder indicating the conjugation between drug and lipid. LDC nanoparticles was found to have particle size 121...
May 10, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28498242/rivaroxaban-used-in-the-treatment-patients-with-gynecologic-cancer-and-venous-thromboembolism-the-experience-of-instituto-nacional-de-c%C3%A3-ncer-rio-de-janeiro-brazil
#14
Marcos José Pereira Renni, Mário Lúcio Cordeiro Araujo, Ingrid Trugilho, Anke Bergmann, Carla Patricia de Morais E Coura
INTRODUCTION: Venous thromboembolism (VTE) is a major complication of malignant diseases and is a frequent cause of death in patients with cancer. Managing anticoagulation in these patients is challenging because of the high risk of recurrent VTE and bleeding events. Rivaroxaban is an oral anticoagulant that provides rapid onset of anticoagulation. OBJECTIVE: The aim of this study was to describe the complications of rivaroxaban and potentially associated factors in patients with gynecologic cancer and VTE...
June 2017: International Journal of Gynecological Cancer
https://www.readbyqxmd.com/read/28494851/effects-of-homoeopathic-ultrahigh-dilutions-of-aconitum-napellus-on-baker-s-yeast-induced-fever-in-rabbits
#15
Saeed Ahmad, Tayyeba Rehman, Waheed Mumtaz Abbasi
OBJECTIVE: To evaluate the effects of homoeopathic ultrahigh dilutions of Aconitum napellus in Baker's yeast-induced fever in rabbits. METHODS: Rabbits were divided into 4 groups and each group contained 6 rabbits. Baker's yeast suspension (20%) was injected subcutaneously. After fever induction, paracetamol and homoeopathic ultrahigh dilutions (A. napellus 200c and 1 000c) were given orally. Rectal temperature was measured with digital thermometer hourly. RESULTS: Fever was induced in all the rabbits after 4 hours of Baker's yeast administration...
May 2017: Journal of Integrative Medicine
https://www.readbyqxmd.com/read/28494337/quantification-of-apigenin-trimethyl-ether-in-rat-plasma-by-liquid-chromatography-tandem-mass-spectrometry-application-to-a-pre-clinical-pharmacokinetic-study
#16
Mai Gamal Elhennawy, Hai-Shu Lin
Apigenin trimethyl ether (5,7,4'-trimethoxyflavone, ATE) is a naturally occurring polymethoxyflavone with a wide range of health-promoting activities. In this study, a sensitive liquid chromatography-tandem mass spectrometry (LC-MS/MS) method was developed and validated for the quantification of ATE in rat plasma. Protein precipitation was applied as plasma clean-up procedure; the electrospray ionization was operated in its positive ion mode while ATE and formononetin (internal standard) were measured by multiple reactions monitoring (ATE: m/z 313...
April 22, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28488961/effect-of-storage-period-of-red-blood-cell-suspensions-on-helper-t-cell-subpopulations
#17
Salih H Bal, Yasemin Heper, Levent T Kumaş, Furkan Guvenc, Ferah Budak, Güher Göral, Haluk B Oral
BACKGROUND: The aim of this study was to investigate the immunological alterations that occur during the storage of erythrocyte suspensions which may lead to transfusion-related immunomodulation following allogeneic blood transfusion. MATERIALS AND METHODS: One part of the erythrocyte suspensions obtained from donors was leucoreduced while the other part was not. The leucoreduced (LR) and non-leucoreduced (NL) erythrocyte suspensions were then further divided into three equal amounts which were stored for 0, 21 or 42 days prior to measurements, by enzyme-linked immunosorbent assays, of cytokine levels in their supernatants...
March 15, 2017: Blood Transfusion, Trasfusione del Sangue
https://www.readbyqxmd.com/read/28487189/mucopenetrating-nanoparticles-for-enhancement-of-oral-bioavailability-of-furosemide-in-vitro-and-in-vivo-evaluation-sub-acute-toxicity-study
#18
Salma El-Sayed Radwan, Magda Samir Sokar, Doaa Ali Abdelmonsif, Amal Hassan El-Kamel
The aim of this study was to formulate and evaluate chitosan (CS)/alginate (ALG) nanoparticles (NPs) loaded with furosemide (FSM) in an attempt to enhance its release, permeability and bioavailability. Non-everted gut sac method was used to evaluate the ex vivo permeation of FSM from its suspension and the selected CS/ALG NPs formulation. The pharmacokinetic parameters of FSM subsequent to oral administration of the selected formulation were assessed in rats. In vivo subacute toxicity study of the prepared blank and FSM loaded formulations was evaluated in rats...
May 6, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28482615/design-of-poly-mpegma-co-maa-hydrogel-based-mpeg-b-pcl-nanoparticles-for-oral-meloxicam-delivery
#19
Yongli Shi, Zhaomin Liu, Yaxing Yang, Xiaojie Xu, Yan Li, Tong Li
To enhance the therapeutic effects of meloxicam (MLX), we developed an oral MLX-loaded poly(ethylene glycol)-b-poly(ε-caprolactone) nanoparticles@hydrogel (MLX-NPs@hydrogel) preparation. The MLX-NPs were fabricated via a solvent evaporation method, and their morphologies were observed by a JEM-1011 transmission electron microscope (TEM). The poly(mPEGMA-co-MAA) hydrogels were synthesized, and studies on their pH sensibilities were carried out in pH1.2, 6.8, and 7.4 buffers. The final MLX-NPs@hydrogel preparation was obtained by immersing the hydrogels in the MLX-NPs suspensions (pH7...
July 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28482534/oral-bioavailability-enhancement-and-hepatoprotective-effects-of-thymoquinone-by-self-nanoemulsifying-drug-delivery-system
#20
Mohd Abul Kalam, Mohammad Raish, Ajaz Ahmed, Khalid M Alkharfy, Kazi Mohsin, Aws Alshamsan, Fahad I Al-Jenoobi, Abdullah M Al-Mohizea, Faiyaz Shakeel
Thymoquinone (TQ) is a poorly water soluble bioactive compound which shows poor oral bioavailability upon oral administration. Due to poor aqueous solubility and bioavailability of TQ, various self-nanoemulsifying drug delivery systems (SNEDDS) of TQ were developed and evaluated for enhancement of its hepatoprotective effects and oral bioavailability. Hepatoprotective and pharmacokinetic studies of TQ suspension and TQ-SNEDDS were carried out in rat models. Different SNEDDS formulations of TQ were developed and thermodynamically stable TQ-SNEDDS were characterized for physicochemical parameters and evaluated for drug release studies via dialysis membrane...
July 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
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