journal
MENU ▼
Read by QxMD icon Read
search

Pharmaceutics

journal
https://www.readbyqxmd.com/read/29039750/modeling-of-body-weight-metrics-for-effective-and-cost-efficient-conventional-factor-viii-dosing-in-hemophilia-a-prophylaxis
#1
Alanna McEneny-King, Pierre Chelle, Severine Henrard, Cedric Hermans, Alfonso Iorio, Andrea N Edginton
The total body weight-based dosing strategy currently used in the prophylactic treatment of hemophilia A may not be appropriate for all populations. The assumptions that guide weight-based dosing are not valid in overweight and obese populations, resulting in overdosing and ineffective resource utilization. We explored different weight metrics including lean body weight, ideal body weight, and adjusted body weight to determine an alternative dosing strategy that is both safe and resource-efficient in normal and overweight/obese adult patients...
October 17, 2017: Pharmaceutics
https://www.readbyqxmd.com/read/29036899/targeting-strategies-for-the-combination-treatment-of-cancer-using-drug-delivery-systems
#2
REVIEW
Janel Kydd, Rahul Jadia, Praveena Velpurisiva, Aniket Gad, Shailee Paliwal, Prakash Rai
Cancer cells have characteristics of acquired and intrinsic resistances to chemotherapy treatment-due to the hostile tumor microenvironment-that create a significant challenge for effective therapeutic regimens. Multidrug resistance, collateral toxicity to normal cells, and detrimental systemic side effects present significant obstacles, necessitating alternative and safer treatment strategies. Traditional administration of chemotherapeutics has demonstrated minimal success due to the non-specificity of action, uptake and rapid clearance by the immune system, and subsequent metabolic alteration and poor tumor penetration...
October 14, 2017: Pharmaceutics
https://www.readbyqxmd.com/read/29023392/disposition-metabolism-and-histone-deacetylase-and-acetyltransferase-inhibition-activity-of-tetrahydrocurcumin-and-other-curcuminoids
#3
Júlia T Novaes, Ryan Lillico, Casey L Sayre, Kalyanam Nagabushnam, Muhammed Majeed, Yufei Chen, Emmanuel A Ho, Ana Luísa de P Oliveira, Stephanie E Martinez, Samaa Alrushaid, Neal M Davies, Ted M Lakowski
Tetrahydrocurcumin (THC), curcumin and calebin-A are curcuminoids found in turmeric (Curcuma longa). Curcuminoids have been established to have a variety of pharmacological activities and are used as natural health supplements. The purpose of this study was to identify the metabolism, excretion, antioxidant, anti-inflammatory and anticancer properties of these curcuminoids and to determine disposition of THC in rats after oral administration. We developed a UHPLC-MS/MS assay for THC in rat serum and urine. THC shows multiple redistribution phases with corresponding increases in urinary excretion rate...
October 12, 2017: Pharmaceutics
https://www.readbyqxmd.com/read/29023376/altered-protein-expression-of-cardiac-cyp2j-and-hepatic-cyp2c-cyp4a-and-cyp4f-in-a-mouse-model-of-type-ii-diabetes-a-link-in-the-onset-and-development-of-cardiovascular-disease
#4
Benoit Drolet, Sylvie Pilote, Carolanne Gélinas, Alida-Douce Kamaliza, Audrey Blais-Boilard, Jessica Virgili, Dany Patoine, Chantale Simard
Arachidonic acid can be metabolized by cytochrome P450 (CYP450) enzymes in a tissue- and cell-specific manner to generate vasoactive products such as epoxyeicosatrienoic acids (EETs-cardioprotective) and hydroxyeicosatetraenoic acids (HETEs-cardiotoxic). Type II diabetes is a well-recognized risk factor for developing cardiovascular disease. A mouse model of Type II diabetes (C57BLKS/J-db/db) was used. After sacrifice, livers and hearts were collected, washed, and snap frozen. Total proteins were extracted...
October 12, 2017: Pharmaceutics
https://www.readbyqxmd.com/read/29019915/revolutionizing-therapeutic-drug-monitoring-with-the-use-of-interstitial-fluid-and-microneedles-technology
#5
REVIEW
Tony K L Kiang, Sahan A Ranamukhaarachchi, Mary H H Ensom
While therapeutic drug monitoring (TDM) that uses blood as the biological matrix is the traditional gold standard, this practice may be impossible, impractical, or unethical for some patient populations (e.g., elderly, pediatric, anemic) and those with fragile veins. In the context of finding an alternative biological matrix for TDM, this manuscript will provide a qualitative review on: (1) the principles of TDM; (2) alternative matrices for TDM; (3) current evidence supporting the use of interstitial fluid (ISF) for TDM in clinical models; (4) the use of microneedle technologies, which is potentially minimally invasive and pain-free, for the collection of ISF; and (5) future directions...
October 11, 2017: Pharmaceutics
https://www.readbyqxmd.com/read/28994701/study-of-statin-and-loratadine-induced-muscle-pain-mechanisms-using-human-skeletal-muscle-cells
#6
Yat Hei Leung, Jacques Turgeon, Veronique Michaud
Many drugs can cause unexpected muscle disorders, often necessitating the cessation of an effective medication. Inhibition of monocarboxylate transporters (MCTs) may potentially lead to perturbation of l-lactic acid homeostasis and muscular toxicity. Previous studies have shown that statins and loratadine have the potential to inhibit l-lactic acid efflux by MCTs (MCT1 and 4). The main objective of this study was to confirm the inhibitory potentials of atorvastatin, simvastatin (acid and lactone forms), rosuvastatin, and loratadine on l-lactic acid transport using primary human skeletal muscle cells (SkMC)...
October 10, 2017: Pharmaceutics
https://www.readbyqxmd.com/read/28954416/predicting-oral-drug-absorption-mini-review-on-physiologically-based-pharmacokinetic-models
#7
REVIEW
Louis Lin, Harvey Wong
Most marketed drugs are administered orally, despite the complex process of oral absorption that is difficult to predict. Oral bioavailability is dependent on the interplay between many processes that are dependent on both compound and physiological properties. Because of this complexity, computational oral physiologically-based pharmacokinetic (PBPK) models have emerged as a tool to integrate these factors in an attempt to mechanistically capture the process of oral absorption. These models use inputs from in vitro assays to predict the pharmacokinetic behavior of drugs in the human body...
September 26, 2017: Pharmaceutics
https://www.readbyqxmd.com/read/28954402/tissue-specific-modulation-of-cyp2c-and-cyp3a-mrna-levels-and-activities-by-diet-induced-obesity-in-mice-the-impact-of-type-2-diabetes-on-drug-metabolizing-enzymes-in-liver-and-extra-hepatic-tissues
#8
Sarah Maximos, Michel Chamoun, Sophie Gravel, Jacques Turgeon, Veronique Michaud
Various diseases such as type 2 diabetes (T2D) may alter drug clearance. The objective of this study was to evaluate the effects of T2D on CYP450 expressions and activities using high-fat diet (HFD) as a model of obesity-dependent diabetes in C57BL6 mice. The cyp450 mRNA expression levels for 15 different isoforms were determined in the liver and extra-hepatic tissues (kidneys, lungs and heart) of HFD-treated animals (n = 45). Modulation of cyp450 metabolic activities by HFD was assessed using eight known substrates for specific human ortholog CYP450 isoforms: in vitro incubations were conducted with liver and extra-hepatic microsomes...
September 26, 2017: Pharmaceutics
https://www.readbyqxmd.com/read/28946666/nanotechnologies-in-pancreatic-cancer-therapy
#9
REVIEW
Ayesha Manzur, Adeolu Oluwasanmi, Darren Moss, Anthony Curtis, Clare Hoskins
Pancreatic cancer has been classified as a cancer of unmet need. After diagnosis the patient prognosis is dismal with few surviving over 5 years. Treatment regimes are highly patient variable and often the patients are too sick to undergo surgical resection or chemotherapy. These chemotherapies are not effective often because patients are diagnosed at late stages and tumour metastasis has occurred. Nanotechnology can be used in order to formulate potent anticancer agents to improve their physicochemical properties such as poor aqueous solubility or prolong circulation times after administration resulting in improved efficacy...
September 25, 2017: Pharmaceutics
https://www.readbyqxmd.com/read/28937621/the-development-of-a-melt-extruded-shellac-carrier-for-the-targeted-delivery-of-probiotics-to-the-colon
#10
Noel M Gately, James E Kennedy
Hot melt extrusion (HME) is considered an efficient technique in developing solid molecular dispersions, and has been demonstrated to provide sustained, modified and targeted drug delivery resulting in improved bioavailability. However, most commercial enteric or pH-responsive polymers are relatively difficult to process or have high Glass Transition Temperature (Tg) values, making their use with temperature-sensitive drugs, probiotics or biologics not viable. Shellac is a natural thermoplastic, and after a review of current literature on the pharmaceutical HME process, a possible gap in the knowledge of the use of shellac to produce dosage forms by means of HME was identified...
September 22, 2017: Pharmaceutics
https://www.readbyqxmd.com/read/28934172/topical-nano-and-microemulsions-for-skin-delivery
#11
REVIEW
Christofori M R R Nastiti, Thellie Ponto, Eman Abd, Jeffrey E Grice, Heather A E Benson, Michael S Roberts
Nanosystems such as microemulsions (ME) and nanoemulsions (NE) offer considerable opportunities for targeted drug delivery to and via the skin. ME and NE are stable colloidal systems composed of oil and water, stabilised by a mixture of surfactants and cosurfactants, that have received particular interest as topical skin delivery systems. There is considerable scope to manipulate the formulation components and characteristics to achieve optimal bioavailability and minimal skin irritancy. This includes the incorporation of established chemical penetration enhancers to fluidize the stratum corneum lipid bilayers, thus reducing the primary skin barrier and increasing permeation...
September 21, 2017: Pharmaceutics
https://www.readbyqxmd.com/read/28926966/augmented-renal-clearance-in-critical-illness-an-important-consideration-in-drug-dosing
#12
REVIEW
Sherif Hanafy Mahmoud, Chen Shen
Augmented renal clearance (ARC) is a manifestation of enhanced renal function seen in critically ill patients. The use of regular unadjusted doses of renally eliminated drugs in patients with ARC might lead to therapy failure. The purpose of this scoping review was to provide and up-to-date summary of the available evidence pertaining to the phenomenon of ARC. A literature search of databases of available evidence in humans, with no language restriction, was conducted. Databases searched were MEDLINE (1946 to April 2017), EMBASE (1974 to April 2017) and the Cochrane Library (1999 to April 2017)...
September 16, 2017: Pharmaceutics
https://www.readbyqxmd.com/read/28902176/pharmacokinetic-and-toxicodynamic-characterization-of-a-novel-doxorubicin-derivative
#13
Samaa Alrushaid, Casey L Sayre, Jaime A Yáñez, M Laird Forrest, Sanjeewa N Senadheera, Frank J Burczynski, Raimar Löbenberg, Neal M Davies
Doxorubicin (Dox) is an effective anti-cancer medication with poor oral bioavailability and systemic toxicities. DoxQ was developed by conjugating Dox to the lymphatically absorbed antioxidant quercetin to improve Dox's bioavailability and tolerability. The purpose of this study was to characterize the pharmacokinetics and safety of Dox after intravenous (IV) and oral (PO) administration of DoxQ or Dox (10 mg/kg) and investigate the intestinal lymphatic delivery of Dox after PO DoxQ administration in male Sprague-Dawley rats...
September 13, 2017: Pharmaceutics
https://www.readbyqxmd.com/read/28880210/comparative-pharmacokinetic-study-for-linezolid-and-two-novel-antibacterial-oxazolidinone-derivatives-in-rabbits-can-differences-in-the-pharmacokinetic-properties-explain-the-discrepancies-between-their-in-vivo-and-in-vitro-antibacterial-activities
#14
Mohsen A Hedaya, Vidhya Thomas, Mohamed E Abdel-Hamid, Elijah O Kehinde, Oludotun A Phillips
This is a comparative pharmacokinetics study of linezolid (Lzd), and two novel oxazolidinone antibacterial agents-PH027 and PH051-in rabbits to determine if the discrepancy between the in vitro and in vivo activities of the novel compounds is due to pharmacokinetic factors. The pharmacokinetics after IV and oral administration, plasma protein binding and tissue distribution for the three compounds were compared. The elimination half-lives were 52.4 ± 6.3, 68.7 ± 12.1 and 175 ± 46.1 min for Lzd, PH027 and PH051, respectively...
September 7, 2017: Pharmaceutics
https://www.readbyqxmd.com/read/28878145/transdermal-permeation-of-drugs-in-various-animal-species
#15
REVIEW
Hiroaki Todo
Excised human skin is utilized for in vitro permeation experiments to evaluate the safety and effect of topically-applied drugs by measuring its skin permeation and concentration. However, ethical considerations are the major problem for using human skin to evaluate percutaneous absorption. Moreover, large variations have been found among human skin specimens as a result of differences in age, race, and anatomical donor site. Animal skins are used to predict the in vivo human penetration/permeation of topically-applied chemicals...
September 6, 2017: Pharmaceutics
https://www.readbyqxmd.com/read/28867811/development-and-evaluation-of-topical-gabapentin-formulations
#16
Christopher J Martin, Natalie Alcock, Sarah Hiom, James C Birchall
Topical delivery of gabapentin is desirable to treat peripheral neuropathic pain conditions whilst avoiding systemic side effects. To date, reports of topical gabapentin delivery in vitro have been variable and dependent on the skin model employed, primarily involving rodent and porcine models. In this study a variety of topical gabapentin formulations were investigated, including Carbopol(®) hydrogels containing various permeation enhancers, and a range of proprietary bases including a compounded Lipoderm(®) formulation; furthermore microneedle facilitated delivery was used as a positive control...
August 30, 2017: Pharmaceutics
https://www.readbyqxmd.com/read/28867809/revisiting-the-latency-of-uridine-diphosphate-glucuronosyltransferases-ugts-how-does-the-endoplasmic-reticulum-membrane-influence-their-function
#17
REVIEW
Yuejian Liu, Michael W H Coughtrie
Uridine diphosphate-glucuronosyltransferases (UGTs) are phase 2 conjugation enzymes mainly located in the endoplasmic reticulum (ER) of the liver and many other tissues, and can be recovered in artificial ER membrane preparations (microsomes). They catalyze glucuronidation reactions in various aglycone substrates, contributing significantly to the body's chemical defense mechanism. There has been controversy over the last 50 years in the UGT field with respect to the explanation for the phenomenon of latency: full UGT activity revealed by chemical or physical disruption of the microsomal membrane...
August 30, 2017: Pharmaceutics
https://www.readbyqxmd.com/read/28820428/pharmacokinetic-analysis-of-an-oral-multicomponent-joint-dietary-supplement-phycox-%C3%A2-in-dogs
#18
Stephanie E Martinez, Ryan Lillico, Ted M Lakowski, Steven A Martinez, Neal M Davies
Despite the lack of safety, efficacy and pharmacokinetic (PK) studies, multicomponent dietary supplements (nutraceuticals) have become increasingly popular as primary or adjunct therapies for clinical osteoarthritis in veterinary medicine. Phycox(®) is a line of multicomponent joint support supplements marketed for joint health in dogs and horses. Many of the active constituents are recognized anti-inflammatory and antioxidant agents. Due to a lack of PK studies in the literature for the product, a pilot PK study of select constituents in Phycox(®) was performed in healthy dogs...
August 18, 2017: Pharmaceutics
https://www.readbyqxmd.com/read/28817072/efficient-transdermal-delivery-of-alendronate-a-nitrogen-containing-bisphosphonate-using-tip-loaded-self-dissolving-microneedle-arrays-for-the-treatment-of-osteoporosis
#19
Hidemasa Katsumi, Yutaro Tanaka, Kaori Hitomi, Shu Liu, Ying-Shu Quan, Fumio Kamiyama, Toshiyasu Sakane, Akira Yamamoto
To improve the transdermal bioavailability and safety of alendronate (ALN), a nitrogen-containing bisphosphonate, we developed self-dissolving microneedle arrays (MNs), in which ALN is loaded only at the tip portion of micron-scale needles by a dip-coating method (ALN(TIP)-MN). We observed micron-scale pores in rat skin just after application of ALN(TIP)-MN, indicating that transdermal pathways for ALN were created by MN. ALN was rapidly released from the tip of MNs as observed in an in vitro release study...
August 17, 2017: Pharmaceutics
https://www.readbyqxmd.com/read/28805720/theophylline-7%C3%AE-d-ribofuranoside-theonosine-a-new-theophylline-metabolite-generated-in-human-and-animal-lung-tissue
#20
Daniel S Sitar, James M Bowen, Juan He, Angelo Tesoro, Michael Spino
While assessing the ability of mammalian lung tissue to metabolize theophylline, a new metabolite was isolated and characterized. The metabolite was produced by the microsomal fraction of lungs from several species, including rat, rabbit, dog, pig, sheep and human tissue. Metabolite production was blocked by boiling the microsomal tissue. This new metabolite, theophylline-7β-d-ribofuranoside (theonosine), was confirmed by several spectral methods and by comparison to an authentic synthetic compound. Tissue studies from rats, rabbits, dogs, and humans for cofactor involvement demonstrated an absolute requirement for NADP and enhanced metabolite production in the presence of magnesium ion...
August 14, 2017: Pharmaceutics
journal
journal
43106
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"