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https://www.readbyqxmd.com/read/28445444/pharmaceutical-equivalence-of-clarithromycin-oral-dosage-forms-marketed-in-nairobi-county-kenya
#1
Rebecca O Manani, Kennedy O Abuga, Hezekiah K Chepkwony
Clarithromycin is a broad-spectrum semi-synthetic macrolide indicated for treatment of pneumonias, Helicobacter pylori, and chlamydial and skin infections. The object of this study was to evaluate the pharmaceutical equivalence of 14 generic clarithromycin products marketed in Nairobi County, Kenya, to the innovator products, using in vitro dissolution profiles and similarity factors (f₂). Further, dissolution profiles of four innovator formulations manufactured in different sites were compared. Fourteen clarithromycin tablets/capsules and four suspensions were subjected to assay and comparative dissolution runs at pH 1...
April 26, 2017: Scientia Pharmaceutica
https://www.readbyqxmd.com/read/28442664/induction-of-neural-crest-cells-from-human-dental-pulp-derived-induced-pluripotent-stem-cells
#2
Eisuke Kawano, Taku Toriumi, Shinya Iguchi, Daigo Suzuki, Shuichi Sato, Masaki Honda
We previously generated induced pluripotent stem (iPS) cells from human dental pulp cells of deciduous teeth. Neural crest cells (NCCs) play a vital role in the development of the oral and maxillofacial region. Therefore, NCCs represent a cell source for bone, cartilage, and tooth-related tissue engineering. In this study, we examined whether iPS cells are capable of differentiating into NCCs through modification of the human embryonic stem cell protocol. First, iPS cells were dissociated into single cells and then reaggregated in low-cell-adhesion plates with neural induction medium for 8 days in suspension culture to form neurospheres...
2017: Biomedical Research
https://www.readbyqxmd.com/read/28435974/-antidepressant-effects-of-the-extract-of-dendrobium-nobile-lindl-on-chronic-unpredictable-mild-stress-induced-depressive-mice
#3
Ning Jiang, Lin-Xi Fan, Yu-Jie Yang, Xin-Min Liu, Hai-Ying Lin, Li Gao, Qiong Wang
To investigate whether the extract of Dendrobium nobile Lindl (DNL) has an antidepressant effect on chronic unpredictable mild stress (CUMS)-induced depressive mice, 72 BALB/c male mice were randomly divided into the control group, the CUMS model group, the extract of DNL groups (50, 100 and 200 mg/kg DNL, i.g.) and the paroxetine group (10 mg/kg, i.g.). The different doses of DNL or the paroxetine was administered orally once daily to CUMS mice for 8 weeks (containing two-week preventive medication before the modeling)...
April 25, 2017: Sheng Li Xue Bao: [Acta Physiologica Sinica]
https://www.readbyqxmd.com/read/28435268/biocompatible-nanoemulsions-based-on-hemp-oil-and-less-surfactants-for-oral-delivery-of-baicalein-with-enhanced-bioavailability
#4
Juntao Yin, Cuiyu Xiang, Peiqing Wang, Yuyun Yin, Yantao Hou
Baicalein (BCL) possesses high pharmacological activities but low solubility and stability in the intestinal tract. This study aimed to probe the potential of nanoemulsions (NEs) consisting of hemp oil and less surfactants in ameliorating the oral bioavailability of BCL. BCL-loaded NEs (BCL-NEs) were prepared by high-pressure homogenization technique to reduce the amount of surfactants. BCL-NEs were characterized by particle size, entrapment efficiency (EE), in vitro drug release, and morphology. Bioavailability was studied in Sprague-Dawley rats following oral administration of BCL suspensions, BCL conventional emulsions, and BCL-NEs...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28434686/effects-of-trimethylsilane-plasma-coating-on-the-hydrophobicity-of-denture-base-resin-and-adhesion-of-candida-albicans-on-resin-surfaces
#5
Tianshuang Liu, Changqi Xu, Liang Hong, Franklin Garcia-Godoy, Timothy Hottel, Jegdish Babu, Qingsong Yu
STATEMENT OF PROBLEM: Candida-associated denture stomatitis is the most common oral mucosal lesion among denture wearers. Trimethylsilane (TMS) plasma coating may inhibit the growth of Candida albicans on denture surfaces. PURPOSE: The purpose of this in vitro study was to investigate whether TMS plasma coatings can effectively reduce C albicans adhesion on denture base acrylic resin surfaces. MATERIAL AND METHODS: Sixty denture base acrylic resin disks with smooth and rough surfaces were prepared and were either left untreated (control group) or coated with TMS monomer (experimental group) by using plasma...
April 20, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28433786/mucoadhesive-tetrahydrocannabinol-loaded-nlc-formulation-optimization-and-long-term-physicochemical-stability
#6
Ghaith Hommoss, Sung Min Pyo, Rainer H Müller
Tetrahydrocannabinol (THC) is used to treat pain in cancer patients. On the market there are mainly oral formulations. Especially to treat the problematic breakthrough pain in cancer, an easy applicable formulation with fast onset is desired. This formulation was developed as an aqueous nasal spray using nanostructured lipid carriers (NLC). The NLC were prepared with cetyl palmitate, having good miscibility with the oily THC and yielding particles with 1 year physical long-term stability. To make the particles mucoadhesive, small particles with diameters of about 200 nm were produced and additionally their surface positively charged using a cationic stabilizer...
April 19, 2017: European Journal of Pharmaceutics and Biopharmaceutics
https://www.readbyqxmd.com/read/28432812/preparation-characterization-and-in-vivo-study-of-rhein-solid-lipid-nanoparticles-for-oral-delivery
#7
Haiyang Feng, Yuping Zhu, Zhixuan Fu, Dechuan Li
In this study, rhein-SLNs were successfully produced by hot homogenization followed by ultrasonication. Precirol ATO5 in which Rhein exhibited higher partition coefficient was selected for preparation of SLNs. In the dynamic light scattering, the rhein SLNs showed a smaller size with a mean value of 120.8 ± 7.9 nm and with zeta potential of -16.9 ± 2.3 mV. SLNs exhibited a good stability during the period of 2 months. The SLNs indicated faster drug release with a burst release within 2 hours and followed by a sustained release with a biphasic drug release pattern...
April 22, 2017: Chemical Biology & Drug Design
https://www.readbyqxmd.com/read/28424979/studies-on-core-shell-nanocapsules-of-felodipine-in-vitro-in-vivo-evaluations
#8
Jerome K Geroge, Priya Ranjan Prasad Verma, Jayachandran Venkatesan, Jin-Young Lee, Dong-Han Yoon, Se-Kwon Kim, Sandeep Kumar Singh
The present study aimed for in vitro-in vivo-in silico simulation studies of experimentally designed (3(2)-factorial) Capmul PG-8-cored, Eudragit RSPO-Lutrol F 127 nanocapsules to ferry felodipine using GastroPlus™. The in silico parameter sensitivity analysis for pharmacokinetic parameters was initially assessed to justify the preparation of felodipine-loaded nanocapsules (FLNs) with enhanced solubility to overcome the bioavailability issues of felodipine. The overall integrated desirability ranged between 0...
April 19, 2017: AAPS PharmSciTech
https://www.readbyqxmd.com/read/28424564/new-developments-in-the-management-of-narcolepsy
#9
REVIEW
Vivien C Abad, Christian Guilleminault
Narcolepsy is a life-long, underrecognized sleep disorder that affects 0.02%-0.18% of the US and Western European populations. Genetic predisposition is suspected because of narcolepsy's strong association with HLA DQB1*06-02, and genome-wide association studies have identified polymorphisms in T-cell receptor loci. Narcolepsy pathophysiology is linked to loss of signaling by hypocretin-producing neurons; an autoimmune etiology possibly triggered by some environmental agent may precipitate hypocretin neuronal loss...
2017: Nature and Science of Sleep
https://www.readbyqxmd.com/read/28422732/molecular-and-serologic-markers-of-hpv-16-infection-are-associated-with-local-recurrence-in-patients-with-oral-cavity-squamous-cell-carcinoma
#10
Chung-Guei Huang, Li-Ang Lee, Chun-Ta Liao, Tzu-Chen Yen, Shu-Li Yang, Yi-Chun Liu, Jung-Chin Li, Yu-Nong Gong, Chung-Jan Kang, Shiang-Fu Huang, Ku-Hao Fang, Kai-Ping Chang, Li-Yu Lee, Chuen Hsueh, Shin-Ru Shih, Kuo-Chien Tsao
Human papillomavirus (HPV) infections predict mortality in Taiwanese patients with oral cavity squamous cell carcinoma (OCSCC). To address their prognostic significance for local recurrence (LR), in this retrospective cohort study we investigated different serologic and molecular markers of HPV 16 infection in 85 consecutive patients with primary OCSCC who received standard treatment and had their sera stored before treatment. Resected tumor specimens were examined with PCR-based assays for HPV 16 E6/E7 mRNA expression...
March 31, 2017: Oncotarget
https://www.readbyqxmd.com/read/28418660/pegylated-solanesol-for-oral-delivery-of-coenzyme-q10
#11
Benkai Qin, Lei Liu, Yangyang Pan, Yingchun Zhu, Xiaohe Wu, Shiyong Song, Guang Han
Coenzyme Q10 (CoQ10) is widely used in preventive or curative treatment of cardiovascular diseases. However, CoQ10 exhibits an extremely low solubility in aqueous medium as well as a poor oral bioavailability. Therefore, solanesyl poly(ethylene glycol) succinate (SPGS) and CoQ10 were formulated as CoQ10-SPGS micelles with a high content of CoQ10 to improve the bioavailability of CoQ10 in rat. Findings indicate that, in the CoQ10-SPGS micelles, SPGS is self-assembled into stable nanosized micelles with a CoQ10 loading capacity of more than 39%...
April 18, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28417083/effects-of-turmeric-curcuminoids-and-metformin-against-central-sensitivity-to-pain-in-mice
#12
Suruchi Verma, Deepak Mundkinajeddu, Amit Agarwal, Shyam Sunder Chatterjee, Vikas Kumar
The reported experimental study was conducted to compare the effects of repeated daily oral doses of curcuminoids (CLE) with metformin as potential antidepressants and analgesics. Effects of a single and ten daily oral doses of CLE (5, 20, 80 mg/kg/day) and of 50 mg/kg/day metformin (MET) were compared in mice hot plate test (HPT) for analgesics. On the 11th treatment day, all animals were subjected to foot shock stress triggered hyperthermia test, and on the 12th treatment day to tail suspension test (TST) for antidepressants...
April 2017: Journal of Traditional and Complementary Medicine
https://www.readbyqxmd.com/read/28416417/in-vitro-evaluation-of-nasogastric-ng-tube-delivery-performance-of-esomeprazole-magnesium-delayed-release-capsules
#13
Alicia Hoover, Dajun Sun, Hong Wen, Wenlei Jiang, Minglei Cui, Xiaojian Jiang, David Keire, Changning Guo
Enteral feeding tubes are used to deliver food or drugs to patients that cannot swallow. To deliver delayed-release drugs that are formulated as enteric coated granules to these patients via feeding tubes requires that they be suspended in water prior to administration. Importantly, the suspension of enteric granules in water of varying pH can cause damage to the enteric coating and affect the bioavailability of the drug. Here, analytical methods for testing acid resistance stability and particle size distribution (PSD) of esomeprazole granules were utilized to monitor the integrity of the granule enteric coating after water pretreatment and delivery through an oral syringe and nasogastric (NG) tube...
April 14, 2017: Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28415407/formulation-by-design-based-risperidone-nano-soft-lipid-vesicle-as-a-new-strategy-for-enhanced-transdermal-drug-delivery-in-vitro-characterization-and-in-vivo-appraisal
#14
Syed Sarim Imam, Abdul Ahad, Mohammed Aqil, Mohd Akhtar, Yasmin Sultana, Asgar Ali
The present study was designed to formulate and optimize transdermal risperidone soft lipid vesicles. The formulation optimized with phospholipid, safranal and ethanol were incorporated as permeation and absorption enhancers. The optimized risperidone soft lipid vesicle was further evaluated for skin irritation study, in-vivo pharmacokinetic study and locomotor activity. Three factor three level Box-Behnken design (BBD) was used to statistically optimize soft lipid vesicle using safranal (A), ethanol (B)and phospholipid (C) as independent variable, while their effect was observed for vesicle size (Y1), entrapment efficiency (Y2) and flux (Y3)...
June 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28414771/stability-of-gabapentin-in-extemporaneously-compounded-oral-suspensions
#15
Mihaela Friciu, V Gaëlle Roullin, Grégoire Leclair
This study reports the stability of extemporaneously prepared gabapentin oral suspensions prepared at 100 mg/mL from bulk drug and capsules in either Oral Mix or Oral Mix SF suspending vehicles. Suspensions were packaged in amber plastic bottles and amber plastic syringes at 25°C / 60%RH for up to 90 days. Throughout the study period, the following tests were performed to evaluate the stability of the preparations: organoleptic inspection to detect homogeneity, color or odor changes; pH measurements; and gabapentin assay using a stability-indicating HPLC-UV method...
2017: PloS One
https://www.readbyqxmd.com/read/28405955/cutaneous-adverse-reaction-during-lithium-treatment-a-case-report-and-updated-systematic-review-with-meta-analysis
#16
Martina Pinna, Mirko Manchia, Sergio Puddu, Giampaolo Minnai, Leonardo Tondo, Piergiorgio Salis
OBJECTIVES: To present a new case of adverse cutaneous reaction during lithium treatment and to update the systematic review and meta-analysis of the incidence of this adverse reaction. METHODS: We conducted a systematic search (performed in September 2016) for peer-reviewed articles in English indexed in Medline (2011-present). Meta-analytical estimates were obtained using the "Metafor" package. CASE PRESENTATION: Ms. H., a 31-year-old Caucasian woman with BD1, was admitted to the inpatient unit for a full-blown psychotic episode and treated with carbamazepine 400 mg q...
December 2017: International Journal of Bipolar Disorders
https://www.readbyqxmd.com/read/28401523/injection-of-pharmaceuticals-designed-for-oral-use-harms-experienced-and-effective-harm-reduction-through-filtration
#17
Stuart McLean, Rahul Patel, Raimondo Bruno
Several pharmaceutical products are liable to 'abuse' or use outside their prescription, which frequently involves their injection. Examples are slow-release forms of morphine and oxycodone, and sublingual buprenorphine. During injection preparation, the drug is extracted into water, after crushing and heating the tablet if considered necessary. Since these products are designed for oral administration, they can contain excipients (ingredients other than the drug) which are poorly soluble, resulting in suspension of particles in the injection solution...
April 2, 2017: Current Topics in Behavioral Neurosciences
https://www.readbyqxmd.com/read/28399142/oral-cavity-hydrodynamics-and-drag-production-in-balaenid-whale-suspension-feeding
#18
Jean Potvin, Alexander J Werth
Balaenid whales feed on large aggregates of small and slow-moving prey (predominantly copepods) through a filtration process enabled by baleen. These whales exhibit continuous filtration, namely, with the mouth kept partially opened and the baleen exposed to oncoming prey-laden waters while fluking. The process is an example of crossflow filtration (CFF) in which most of the particulates (prey) are separated from the substrate (water) without ever coming into contact with the filtering surface (baleen). This paper discusses the simulation of baleen filtration hydrodynamics based on a type of hydraulic circuit modeling commonly used in microfluidics, but adapted to the much higher Reynolds number flows typical of whale hydrodynamics...
2017: PloS One
https://www.readbyqxmd.com/read/28395272/the-effect-of-hesperidin-and-quercetin-on-oxidative-stress-nf-%C3%AE%C2%BAb-and-sirt1-levels-in-a-stz-induced-experimental-diabetes-model
#19
Hatice Iskender, Eda Dokumacioglu, Tugba Mazlum Sen, Imran Ince, Yalcin Kanbay, Sinan Saral
OBJECTIVE: The aim of this study is to investigate the roles of SIRT1 and NF-κB in the pathogenesis of diabetes mellitus in rats with STZ-induced diabetes and determine the effects of hesperidin and quercetin on oxidative stress and on the levels of SIRT1 and NF-κB. MATERIALS AND METHODS: The experimental animals were divided into four groups, each group comprising ten rats designated as follows: group 1 served as control rats (C); group 2 served as diabetic rats (DM); group 3 served as diabetic rats administered hesperidin (DM+HSP) (100mg/kg b...
April 7, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28391532/outcome-of-a-graduated-minimally-invasive-facial-reanimation-in-patients-with-facial-paralysis
#20
Laura C Holtmann, Anja Eckstein, Kerstin Stähr, Minzhi Xing, Stephan Lang, Stefan Mattheis
Peripheral paralysis of the facial nerve is the most frequent of all cranial nerve disorders. Despite advances in facial surgery, the functional and aesthetic reconstruction of a paralyzed face remains a challenge. Graduated minimally invasive facial reanimation is based on a modular principle. According to the patients' needs, precondition, and expectations, the following modules can be performed: temporalis muscle transposition and facelift, nasal valve suspension, endoscopic brow lift, and eyelid reconstruction...
April 8, 2017: European Archives of Oto-rhino-laryngology
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