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https://www.readbyqxmd.com/read/28917875/collagen-and-hyaluronic-acid-hydrogel-in-water-in-oil-microemulsion-delivery-systems
#1
Sylwia Kupper, Ilona Kłosowska-Chomiczewska, Patrycja Szumała
The increase in skin related health issues has promoted interest in research on the efficacy of microemulsion in dermal and transdermal delivery of active ingredients. Here, we assessed the water-in-oil microemulsion capacity to incorporate two natural polymers, i.e. collagen and hyaluronic acid with low and high molecular weight. Systems were extensively characterized in terms of conductivity, phase inversion studies, droplet diameter, polydispersity index and rheological properties. The results of this research indicate that the structure and extent of water phase in microemulsions is governed by ratio and amount of surfactant mixture (sorbitan ester derivatives)...
November 1, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28915591/eugenol-alleviated-breast-precancerous-lesions-through-her2-pi3k-akt-pathway-induced-cell-apoptosis-and-s-phase-arrest
#2
Min Ma, Yi Ma, Gui-Juan Zhang, Rui Liao, Xue-Feng Jiang, Xian-Xin Yan, Feng-Jie Bie, Xiao-Bo Li, Yan-Hong Lv
Eugenol can be separated from the oil extract of clove bud, and has many pharmacological functions such as anticancer and transdermal absorption. HER2/PI3K-AKT is a key signaling pathway in the development of breast cancer. In this study, 80 μM eugenol could significantly inhibit the proliferation of HER-2 positive MCF-10AT cells and the inhibition rate was up to 32.8%, but had no obvious inhibitory effect on MCF-7 and MCF-10A cells with HER2 weak expression. Eugenol also significantly induced human breast precancerous lesion MCF-10AT cell apoptosis and cell cycle S-phase arrest, but the biological effects nearly disappeared after HER2 over-expression through transfecting pcDNA3...
August 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/28914084/lc-ms-determination-of-fentanyl-in-human-serum-and-application-to-a-fentanyl-transdermal-delivery-pharmacokinetic-study
#3
Mingming Yu, Inas A Abdallah, Soo Hyeon Shin, Dana C Hammell, Audra L Stinchcomb, Hazem E Hassan
AIM: Fentanyl is an opioid agonist used for acute and chronic pain management. In this report, a highly sensitive and simple LC-MS/MS method using Hydrophilic Interaction Chromatography (HILIC) column was validated and used for fentanyl quantification in human serum. RESULTS: The isocratic mobile phase was composed of acetonitrile: 10 mM ammonium formate buffer (pH = 3.2; 90:10, v/v). The assay was linear over a concentration range of 10-10,000 pg/ml. The accuracy of the validation method ranged from 93...
September 15, 2017: Bioanalysis
https://www.readbyqxmd.com/read/28913486/the-switch-from-buprenorphine-to-tapentadol-is-it-worth
#4
REVIEW
Adriana Miclescu
Opioid analgesia continues to be the primary pharmacologic intervention for managing acute pain and malignant pain in both hospitalized and ambulatory patients. The increasing use of opioids in chronic nonmalignant pain is more problematic. Opioid treatment is complicated with the risks raised by adverse effects, especially cognitive disturbance, respiratory depression but also the risk of tolerance, opioid abuse and drug-disease interactions. Despite the growing number of available opioids within the last years, adequate trials of opioid rotation are lacking and most of the information is anecdotal...
October 2016: Rom J Anaesth Intensive Care
https://www.readbyqxmd.com/read/28905874/ovarian-hormones-and-transdermal-nicotine-administration-independently-and-synergistically-suppress-tobacco-withdrawal-symptoms-and-smoking-reinstatement-in-the-human-laboratory
#5
Raina D Pang, Madalyn M Liautaud, Matthew G Kirkpatrick, Jimi Huh, John Monterosso, Adam M Leventhal
Modeling intra-individual fluctuations in estradiol and progesterone may provide unique insight into the effects of ovarian hormones on the etiology and treatment of nicotine dependence. This randomized placebo-controlled laboratory study tested the independent and interactive effects of intra-individual ovarian hormone variation and nicotine on suppression of tobacco withdrawal symptoms and smoking behavior. Female smokers randomized to 21 mg. nicotine (TNP; n=37) or placebo (PBO; n=43) transdermal patch following overnight abstinence completed three sessions occurring during hormonally distinct menstrual cycle phases...
September 14, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28903827/pharmacokinetics-of-a-transdermal-fentanyl-solution-in-suffolk-sheep-ovis-aries
#6
Kimberly Y Jen, Melissa C Dyson, Patrick A Lester, Jean A Nemzek
Sheep used as surgical models require appropriate pain management, and the commonly used transdermal fentanyl patches require a long predosing period to achieve adequate plasma concentrations. The aim of this study was to assess the pharmacokinetic parameters of an FDA-approved transdermal fentanyl solution (TFS) that has yet to be tested in sheep. In this study, we compared TFS at 2.7 mg/kg (n = 2), 1.7 mg/kg (n = 3), and 0.5 mg/kg (n = 3) with the control fentanyl patch at 2 μg/kg/h (n = 1); both products were applied topically to the intrascapular region...
September 1, 2017: Journal of the American Association for Laboratory Animal Science: JAALAS
https://www.readbyqxmd.com/read/28903616/circulating-dehydroepiandrosterone-sulphate-decreases-even-with-a-slight-change-in-oestradiol
#7
Sumika Matsui, Toshiyuki Yasui, Kana Kasai, Kanako Yoshida, Takeshi Kato, Hirokazu Uemura, Akira Kuwahara, Toshiya Matsuzaki, Minoru Irahara
The aim of this study was to determine the effect of hormone replacement therapy (HRT) on changes in circulating dehydroepiandrosterone-sulphate (DHEA-S) with focus on the relationship between oestrogen level and change in DHEA-S. Forty-two women were enrolled in this longitudinal study. Nineteen women received oral oestradiol and twenty-three women received transdermal oestradiol continuously. Twenty women received progesterone continuously except for women who had undergone hysterectomy. Circulating oestradiol, follicle-stimulating hormone, luteinising hormone and DHEA-S levels before and at 3 months after commencement of HRT were measured...
September 14, 2017: Journal of Obstetrics and Gynaecology: the Journal of the Institute of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/28899209/microneedle-mediated-transdermal-delivery-of-nanostructured-lipid-carriers-for-alkaloids-from-aconitum-sinomontanum
#8
Teng Guo, Yongtai Zhang, Zhe Li, Jihui Zhao, Nianping Feng
A combination method using microneedle (MN) pretreatment and nanostructured lipid carriers (NLCs) was developed to improve the transdermal delivery of therapeutics. The MN treatment of the skin and co-administration of NLCs loaded with total alkaloids isolated from Aconitum sinomontanum (AAS-NLCs) significantly increased the skin permeation of the drugs. Fluorescence imaging confirmed that MNs could provide microchannels penetrating the stratum corneum, and delivery of NLCs through the channels led to their deeper permeation...
September 12, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/28895561/sexual-medicine-transdermal-oestrogen-is-effective
#9
Louise Stone
No abstract text is available yet for this article.
September 12, 2017: Nature Reviews. Urology
https://www.readbyqxmd.com/read/28895101/solid-state-stability-issues-of-drugs-in-transdermal-patch-formulations
#10
REVIEW
Purnendu Kumar Sharma, Apoorva Panda, Adwait Pradhan, Jiaxiang Zhang, Ruchi Thakkar, Chang-Hee Whang, Michael A Repka, S Narasimha Murthy
The transdermal patch formulation has many advantages, including noninvasiveness, an ability to bypass the first-pass metabolism, low dosage requirements, and prolonged drug delivery. However, the instability of solid-state drugs is one of the most critical problems observed in transdermal patch products. Therefore, a well-characterized approach for counteracting stability problems in solid-state drugs is crucial for improving the performance of transdermal patch products. This review provides insight into the solid-state stability of drugs associated with transdermal patch products and offers a comprehensive update on the various approaches being used for improving the stability of the active pharmaceutical ingredients currently being used...
September 11, 2017: AAPS PharmSciTech
https://www.readbyqxmd.com/read/28894357/advances-in-the-delivery-of-buprenorphine-for-opioid-dependence
#11
REVIEW
Richard N Rosenthal, Viral V Goradia
Opioid use disorders (OUDs) have long been a global problem, but the prevalence rates have increased over 20 years to epidemic proportions in the US, with concomitant increases in morbidity and all-cause mortality, but especially opioid overdose. These increases are in part attributable to a several-fold expansion in the prescription of opioid pain medications over the same time period. Opioid detoxification and psychosocial treatments alone have each not yielded sufficient efficacy for OUD, but μ-opioid receptor agonist, partial agonist, and antagonist medications have demonstrated the greatest overall benefit in OUD treatment...
2017: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/28892981/effect-of-transdermal-nitroglycerine-on-doppler-velocity-waveforms-of-the-uterine-umbilical-and-fetal-middle-cerebral-arteries-in-patients-with-chronic-placental-insufficiency-a-prospective-rct
#12
Suruchi Gupta, Meenakshi Chauhan, Jyotsna Sen, Smiti Nanda
INTRODUCTION: Increase in Nitric Oxide (NO) may be important in vascular adaptation needed to accommodate increased uteroplacental blood flow as pregnancy advances. Hence, in certain conditions like Pregnancy Induced Hypertension (PIH) and Fetal Growth Restriction (FGR), NO donors may play an effective role in increasing uteroplacental perfusion. Transdermal route appears to be a safe and effective route. AIM: To evaluate the effect of nitroglycerine patch on Doppler velocity waveforms of the uterine, umbilical and fetal middle cerebral arteries in patients with chronic placental insufficiency...
July 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28890931/rotigotine-transdermal-patch-and-sleep-in-parkinson-s-disease-where-are-we-now
#13
REVIEW
Miguel Rosa-Grilo, Mubasher A Qamar, Raquel N Taddei, Javier Pagonabarraga, Jaime Kulisevsky, Anna Sauerbier, K Ray Chaudhuri
A wide range of sleep dysfunction complicates Parkinson's disease during its course from prodromal to palliative stage. It is now increasingly acknowledged that sleep disturbances are thus integral to the disease and pose a significant burden impacting on quality of life of patients. Sleep fragmentation, restless legs syndrome, nocturia, and nocturnal pain are regarded as one of the main components of night-time sleep dysfunction with possible secondary impact on cognition and well-being. The role of dopaminergic therapies, particularly using a continuous drug delivery strategy in managing some of these sleep issues, have been reported but the overall concept remains unclear...
2017: NPJ Parkinson's Disease
https://www.readbyqxmd.com/read/28890568/transdermal-fentanyl-patch-in-post-operative-patients-is-it-justified
#14
Abhijit S Nair
No abstract text is available yet for this article.
August 2017: Indian Journal of Anaesthesia
https://www.readbyqxmd.com/read/28886207/the-biological-effects-of-kambo-is-there-a-relationship-between-its-administration-and-sudden-death
#15
Isabella Aquila, Santo Gratteri, Matteo A Sacco, Vittorio Fineschi, Simona Magi, Pasqualina Castaldo, Graziella Viscomi, Salvatore Amoroso, Pietrantonio Ricci
Kambo is a substance obtained from the skin secretions of a frog, Phyllomedusa bicolor, popular in the Amazon region, which is administered via the transdermal route. We report a case of 42-year-old man found dead in his house. Near the corpse, a plastic box labeled as "Kambo sticks" was found. The man was a chronic consumer of Kambo and no previous pathology or genetic disease emerged in clinical history from the declaration of his general practitioner. Autopsy investigations and toxicological analysis were performed...
September 8, 2017: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/28883252/switching-therapy-from-intravenous-landiolol-to-transdermal-bisoprolol-in-a-patient-with-thyroid-storm-complicated-by-decompensated-heart-failure-and-gastrointestinal-dysfunction
#16
Shigeo Godo, Yu Kawazoe, Hiroshi Ozaki, Motoo Fujita, Daisuke Kudo, Ryosuke Nomura, Hiroaki Shimokawa, Shigeki Kushimoto
Thyroid storm is a life-threatening disorder that remains a therapeutic challenge. Although β-blockers are the mainstay for treatment, their use can be challenging in cases complicated by rapid atrial fibrillation and decompensated heart failure. We present a case of thyroid storm-associated atrial fibrillation and decompensated heart failure complicated by gastrointestinal dysfunction secondary to diffuse peritonitis that was successfully managed by a switching therapy, in which the continuous intravenous administration of landiolol was changed to bisoprolol via transdermal patch, in the acute phase treatment...
September 6, 2017: Internal Medicine
https://www.readbyqxmd.com/read/28878145/transdermal-permeation-of-drugs-in-various-animal-species
#17
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/28877414/evaluation-of-the-analgesic-and-pharmacokinetic-properties-of-transdermally-administered-fentanyl-in-goats
#18
Megan J Burke, Lawrence R Soma, Raymond C Boston, Jeffery A Rudy, Thomas P Schaer
OBJECTIVE: Evaluate the analgesic properties and pharmacokinetics of transdermal fentanyl patches (TFPs) in goats. DESIGN: Prospective, randomized study. SETTING: Preclinical Testing Facility at a University Teaching Hospital. ANIMALS: Thirty-four adult female Boer-cross goats. INTERVENTIONS: Goats underwent surgery as part of a concurrent orthopedic research study. Twelve hours prior to surgery, each goat received a TFP (target dosage of 2...
September 2017: Journal of Veterinary Emergency and Critical Care
https://www.readbyqxmd.com/read/28875405/appraisal-of-transdermal-water-in-oil-nanoemulgel-of-selegiline-hcl-for-the-effective-management-of-parkinson-s-disease-pharmacodynamic-pharmacokinetic-and-biochemical-investigations
#19
Sonal Setya, Tushar Madaan, Mohammad Tariq, B K Razdan, Sushama Talegaonkar
In the present study, the potential of transdermal nanoemulsion gel of selegiline hydrochloride for the treatment of Parkinson's disease was investigated. Water-in-oil nanoemulsions were developed by comparing low- and high-energy methods and were subjected to thermodynamic stability tests, in vitro permeation, and characterization studies. In vitro studies indicated that components of nanoemulsion acted as permeation enhancers with highest flux of 3.531 ± 1.94 μg/cm(2)/h from nanoemulsion SB6 containing 0...
September 5, 2017: AAPS PharmSciTech
https://www.readbyqxmd.com/read/28875384/rare-cause-of-delirium-and-hypoxemia-after-coronary-bypass-surgery-transdermal-lidocaine-patch-associated-methemoglobinemia
#20
Fidel A Acevedo, Esther J Kim, David A Chyatte, Vance G Nielsen
We present a case of a patient administered parasternal transdermal lidocaine patch therapy as part of a multimodal analgesic regime designed to diminish opioid-associated delirium after coronary bypass surgery. The patient presented with delirium and severe methemoglobinemia (41%) that responded to discontinuation of lidocaine therapy, oxygen administration, and methylene blue administration. The clinical contributors and medicolegal implications of this degree of lidocaine-associated methemoglobin-mediated delirium are presented in the hope of avoiding similar complications in the postoperative setting after coronary bypass surgery...
September 5, 2017: International Journal of Legal Medicine
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