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https://www.readbyqxmd.com/read/28098511/hemodynamic-effects-of-hpma-copolymer-based-doxorubicin-conjugate-a-randomized-controlled-and-comparative-spectral-study-in-conscious-rats
#1
Hoay Yan Cheah, Olivera Šarenac, Juan J Arroyo, Marko Vasić, Maja Lozić, Sofija Glumac, See Ziau Hoe, Charles Colin Thomas Hindmarch, David Murphy, Lik Voon Kiew, Hong Boon Lee, Marίa J Vicent, Lip Yong Chung, Nina Japundžić-Žigon
Conjugation of Doxorubicin (DOX) to N-(2-Hydroxypropyl) methylacrylamide copolymer (HPMA) has significantly reduced the DOX-associated cardiotoxicity. However, the reports on the impact of HPMA-DOX conjugates on the cardiovascular system such as blood pressure (BP) and heart rate (HR) were in restrained animals using tail cuff and/or other methods that lacked the resolution and sensitivity. Herein, we employed radiotelemetric-spectral-echocardiography approach to further understand the in vivo cardiovascular hemodynamics and variability post administration of free DOX and HPMA-DOX...
January 18, 2017: Nanotoxicology
https://www.readbyqxmd.com/read/28097665/pharmacokinetics-and-selected-pharmacodynamics-of-romifidine-following-low-dose-intravenous-administration-in-combination-with-exercise-to-quarter-horses
#2
H K Knych, S D Stanley, D S McKemie, S J Steinmetz
Romifidine is an alpha-2 adrenergic agonist used for sedation and analgesia in horses. As it is a prohibited substance, its purported use at low doses in performance horses necessitates further study. The primary goal of the study reported here was to describe the serum concentrations and pharmacokinetics of romifidine following low-dose administration immediately prior to exercise, utilizing a highly sensitive liquid chromatography-tandem mass spectrometry assay that is currently employed in many drug testing laboratories...
January 17, 2017: Journal of Veterinary Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/28097356/effect-of-etelcalcetide-vs-cinacalcet-on-serum-parathyroid-hormone-in-patients-receiving-hemodialysis-with-secondary-hyperparathyroidism-a-randomized-clinical-trial
#3
Geoffrey A Block, David A Bushinsky, Sunfa Cheng, John Cunningham, Bastian Dehmel, Tilman B Drueke, Markus Ketteler, Reshma Kewalramani, Kevin J Martin, Sharon M Moe, Uptal D Patel, Justin Silver, Yan Sun, Hao Wang, Glenn M Chertow
Importance: Secondary hyperparathyroidism contributes to extraskeletal calcification and is associated with all-cause and cardiovascular mortality. Control is suboptimal in the majority of patients receiving hemodialysis. An intravenously (IV) administered calcimimetic could improve adherence and reduce adverse gastrointestinal effects. Objective: To evaluate the relative efficacy and safety of the IV calcimimetic etelcalcetide and the oral calcimimetic cinacalcet...
January 10, 2017: JAMA: the Journal of the American Medical Association
https://www.readbyqxmd.com/read/28097007/safety-assessment-in-rats-and-dogs-of-acoustic-cluster-therapy-a-novel-concept-for-ultrasound-mediated-targeted-drug-delivery
#4
Oddvar Myhre, Marie Bjørgan, Derek Grant, Svein-Olaf Hustvedt, Per C Sontum, Hubert Dirven
Acoustic Cluster Therapy (ACT) represents a novel concept for targeted drug delivery. Ultrasound is applied to activate intravenously administered free-flowing clusters of microbubbles and microdroplets within the target pathology, depositing 20-30 μm large bubbles in the microvasculature for 5-10 min. Further application of ultrasound induces biomechanical effects which increase vascular permeability and enhance localized extravasation of coadministered drugs. Herein we report investigations done to assess the preclinical safety of ACT, using doses up to 1 mL/kg (3 μL perfluoromethyl-cyclopentane/kg)...
December 2016: Pharmacology Research & Perspectives
https://www.readbyqxmd.com/read/28096580/randomized-double-blind-comparison-of-remifentanil-and-alfentanil-in-patients-undergoing-laparoscopic-cholecystectomy-using-total-intravenous-anesthesia
#5
José M Beleña, Mónica Núñez, Alfonso Vidal, Diego Anta
BACKGROUND AND AIMS: To compare the use of remifentanil and alfentanil to suppress intraoperative adrenergic response of pain and the influence of these drugs on the recovery profile in patients undergoing laparoscopic cholecystectomy using a total intravenous anesthesia (TIVA) technique. MATERIAL AND METHODS: One hundred patients undergoing elective laparoscopic cholecystectomy were randomized to be managed with either remifentanil (group R) or alfentanil (group A)...
October 2016: Journal of Anaesthesiology, Clinical Pharmacology
https://www.readbyqxmd.com/read/28095830/kv7-voltage-activated-potassium-channel-inhibitors-reduce-fluid-resuscitation-requirements-after-hemorrhagic-shock-in-rats
#6
Sean P Nassoiy, Kenneth L Byron, Matthias Majetschak
BACKGROUND: Recent evidence suggests that drugs targeting Kv7 channels could be used to modulate vascular function and blood pressure. Here, we studied whether Kv7 channel inhibitors can be utilized to stabilize hemodynamics and reduce resuscitation fluid requirements after hemorrhagic shock. METHODS: Anesthetized male Sprague-Dawley rats were instrumented with arterial and venous catheters for blood pressure monitoring, hemorrhage and fluid resuscitation. Series 1: Linopirdine (Kv7 channel blocker, 0...
January 17, 2017: Journal of Biomedical Science
https://www.readbyqxmd.com/read/28094044/diagnosis-and-treatment-of-acute-retinal-necrosis-a-report-by-the-american-academy-of-ophthalmology
#7
Scott D Schoenberger, Stephen J Kim, Jennifer E Thorne, Prithvi Mruthyunjaya, Steven Yeh, Sophie J Bakri, Justis P Ehlers
PURPOSE: To evaluate the available evidence in peer-reviewed publications about the diagnosis and treatment of acute retinal necrosis (ARN). METHODS: Literature searches of the PubMed and Cochrane Library databases were last conducted on July 27, 2016. The searches identified 216 unique citations, and 49 articles of possible clinical relevance were reviewed in full text. Of these 49 articles, 27 were deemed sufficiently relevant or of interest, and they were rated according to strength of evidence...
January 13, 2017: Ophthalmology
https://www.readbyqxmd.com/read/28093629/liquid-release-as-a-source-of-potential-drug-exposure-during-the-handling-of-intravenous-infusions-in-nursing
#8
Verena Segner, Renate Kimbel, Philipp Jochems, André Heinemann, Stephan Letzel, Daniel Wollschläger, Bernd Roßbach
PURPOSE: This study aims at experimentally determining the incidence and extent of liquid releases onto the operator's hands and into the work environment during common nursing operations involving infusions. METHODS: A sequence of operations related to the preparation and administration of infusions was conducted by three subjects for 15 times each using fluorescein marked infusion solutions and two different infusion sets (standard set vs. safety-optimized set)...
January 16, 2017: International Archives of Occupational and Environmental Health
https://www.readbyqxmd.com/read/28092994/current-status-and-future-prospects-of-hyperthermic-intraoperative-intraperitoneal-chemotherapy-hipec-clinical-trials-in-ovarian-cancer
#9
Renee A Cowan, Roisin E O'Cearbhaill, Oliver Zivanovic, Dennis S Chi
The natural history of advanced-stage epithelial ovarian cancer is one of clinical remission after surgery and platinum/taxane-based intravenous and/or intraperitoneal chemotherapy followed by early or late recurrence in the majority of patients. Prevention of progression and recurrence remains a major hurdle in the management of ovarian cancer. Recently, many investigators have evaluated the use of normothermic and hyperthermic intraoperative intraperitoneal drug delivery as a management strategy. This is a narrative review of the current status of clinical trials of hyperthermic intraoperative intraperitoneal chemotherapy (HIPEC) in ovarian cancer and the future directions for this treatment strategy...
January 16, 2017: International Journal of Hyperthermia
https://www.readbyqxmd.com/read/28091336/who-are-the-patients-that-default-tuberculosis-treatment-space-matters
#10
C Nunes, R Duarte, A M Veiga, B Taylor
The goals of this article are: (i) to understand how individual characteristics affect the likelihood of patients defaulting their pulmonary tuberculosis (PTB) treatment regimens; (ii) to quantify the predictive capacity of these risk factors; and (iii) to quantify and map spatial variation in the risk of defaulting. We used logistic regression models and generalized additive models with a spatial component to determine the odds of default across continental Portugal. We focused on new PTB cases, diagnosed between 2000 and 2013, and included some individual information (sex, age, residence area, alcohol abuse, intravenous drug use, homelessness, HIV, imprisonment status)...
January 16, 2017: Epidemiology and Infection
https://www.readbyqxmd.com/read/28088076/in%C3%A2-vivo-visualization-of-endogenous-mir-21-using-hyaluronic-acid-coated-graphene-oxide-for-targeted-cancer-therapy
#11
Do Won Hwang, Han Young Kim, Fangyuan Li, Ji Yong Park, Dohyun Kim, Jae Hyung Park, Hwa Seung Han, Jung Woo Byun, Yun-Sang Lee, Jae Min Jeong, Kookheon Char, Dong Soo Lee
Oncogene-targeted nucleic acid therapy has been spotlighted as a new paradigm for cancer therapeutics. However, in vivo delivery issues and uncertainty of therapeutic antisense drug reactions remain critical hurdles for a successful targeted cancer therapy. In this study, we developed a fluorescence-switchable theranostic nanoplatform using hyaluronic acid (HA)-conjugated graphene oxide (GO), which is capable of both sensing oncogenic miR-21 and inhibiting its tumorigenicity simultaneously. Cy3-labeled antisense miR-21 peptide nucleic acid (PNA) probes loaded onto HA-GO (HGP21) specifically targeted CD44-positive MBA-MB231 cells and showed fluorescence recovery by interacting with endogenous miR-21 in the cytoplasm of the MBA-MB231 cells...
December 31, 2016: Biomaterials
https://www.readbyqxmd.com/read/28087488/cathepsin-k-targeted-sub-micron-particles-for-regenerative-repair-of-vascular-elastic-matrix
#12
Brenton Jennewine, Jonathan Fox, Anand Ramamurthi
: Abdominal Aortic Aneurysms (AAA) involve slow dilation and weakening of the aortic wall due to breakdown of structural matrix components, such as elastic fibers by chronically overexpressed matrix metalloproteinases (MMPs), primarily, MMPs-2 and -9. Auto-regenerative repair of disrupted elastic fibers by smooth muscle cells (SMCs) at the AAA site is intrinsically poor and together with chronic proteolysis prevents restoration of elastin homeostasis, necessary to enable AAA growth arrest or regression to a healthy state...
January 10, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28079914/intravenous-immunoglobulin-in-pediatric-rheumatology-when-to-use-it-and-what-is-the-evidence
#13
Martha M Rodriguez, Linda Wagner-Weiner
Intravenous immunoglobulin (IVIG) is given to children with a variety of rheumatologic illnesses. The mechanism of action by which it exerts therapeutic effects is not well understood and likely differs in the medical conditions for which it is given. IVIG is approved by the US Food and Drug Administration and is the standard of care for Kawasaki disease, but most IVIG use in pediatric rheumatology is "off-label. " The literature supports the use of IVIG for juvenile dermatomyositis, although it is unclear whether its use should be limited to those children with more severe or refractory disease...
January 1, 2017: Pediatric Annals
https://www.readbyqxmd.com/read/28079818/factors-associated-with-syphilis-incidence-in-the-hiv-infected-in-the-era-of-highly-active-antiretrovirals
#14
Mohaned Shilaih, Alex Marzel, Dominique L Braun, Alexandra U Scherrer, Helen Kovari, Jim Young, Alexandra Calmy, Katharine Darling, Manuel Battegay, Matthias Hoffmann, Enos Bernasconi, Maria C Thurnheer, Huldrych F Günthard, Roger D Kouyos
After several years of steady decline, syphilis is reemerging globally as a public health hazard, especially among people living with human immunodeficiency virus (HIV). Syphilis resurgence is observed mainly in men who have sex with men (MSM), yet other transmission groups are affected too. In this manuscript, we study the factors associated with syphilis incidence in the Swiss HIV cohort study in the era of highly effective antiretrovirals. Using parametric interval censored models with fixed and time-varying covariates, we studied the immunological, behavioral, and treatment-related elements associated with syphilis incidence in 3 transmission groups: MSM, heterosexuals, and intravenous drug users...
January 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28079270/treatment-of-adults-with-idiopathic-recurrent-pericarditis-novel-use-of-immunotherapy
#15
Nicholas C Schwier, Genevieve Hale, Marie L Davies
Idiopathic recurrent pericarditis (IRP) can be challenging to treat. Even after guideline-directed, first-line treatment consisting of aspirin (ASA) or a nonsteroidal antiinflammatory drug (NSAID) in combination with colchicine therapy, recurrences still occur in greater than 20% of patients. Many patients then require treatment with long-term corticosteroids, which is not a favorable option due to their short- and long-term adverse effects. Since it is theorized that the pathophysiology of IRP may possess autoimmune sequelae, the use of immunotherapy for the treatment of IRP has emerged...
January 12, 2017: Pharmacotherapy
https://www.readbyqxmd.com/read/28078682/population-pharmacokinetics-of-intravenous-clonidine-for-sedation-during-pediatric-extracorporeal-membrane-oxygenation-ecmo-and-continuous-veno-venous-hemofiltration-cvvh
#16
Niina Kleiber, Ron A A Mathôt, Maurice J Ahsman, Enno D Wildschut, Dick Tibboel, Saskia N de Wildt
AIMS: Clonidine is used for sedation in the pediatric intensive care unit. Extracorporeal membrane oxygenation (ECMO) provides temporary support if respiratory and cardiac function is threatened. ECMO influences the pharmacokinetics of drugs. Clonidine during pediatric ECMO cannot be effectively titrated as PK data are lacking. The aim of this study is to describe clonidine PK in a particular ECMO system and propose dosing guidelines for children on this particular ECMO circuit. METHODS: All children below the age of 18 who received clonidine during ECMO were eligible...
January 12, 2017: British Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/28077580/peptide-from-sea-anemone-metridium-senile-affects-transient-receptor-potential-ankyrin-repeat-1-trpa1-function-and-produces-analgesic-effect
#17
Yulia A Logashina, Irina V Mosharova, Yulia V Korolkova, Irina V Shelukhina, Igor A Dyachenko, Victor A Palikov, Yulia A Palikova, Arkadii N Murashev, Sergey A Kozlov, Klara Stensvåg, Yaroslav A Andreev
The transient receptor potential ankyrin-repeat 1 (TRPA1) is an important player in pain and inflammatory pathways. It is a promising target for novel drug development for the treatment of a number of pathological states. A novel peptide producing a significant potentiating effect on allyl isothiocyanate (AITC)- and diclofenac-induced currents of TRPA1 was isolated from the venom of sea anemone Metridium senile. It is a 35-amino-acid peptide cross-linked by two disulfide bridges, named τ-AnmTX Ms 9a-1 (short name Ms 9a-1) according to a structure similar to other sea anemone peptides belonging to structural group 9a...
January 11, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28075466/co-delivery-of-doxorubicin-and-ph-sensitive-curcumin-prodrug-by-transferrin-targeted-nanoparticles-for-breast-cancer-treatment
#18
Tongxing Cui, Sihao Zhang, Hong Sun
The natural product curcumin and the chemotherapeutic agent doxorubicin have been used in the treatment of many cancers, including breast cancer. However, fast clearance and unspecific distribution in the body after intravenous injection are still challenges to be overcome by an ideal nano-sized drug delivery system in cancer treatment. In this study we design transferrin (Tf) decorated nanoparticles (NPs) to co-deliver CUR and DOX for breast cancer treatment. A pH-sensitive prodrug, transferrin-poly(ethylene glycol)-curcumin (Tf-PEG-CUR), was synthesized and used for the self‑assembling of NPs (Tf-PEG-CUR NPs)...
January 2, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28074531/antibiotic-use-during-infectious-episodes-in-the-first-6-months-of-anticancer-treatment-a-swedish-cohort-study-of-children-aged-7-16-years
#19
M Af Sandeberg, E Johansson, L Wettergren, O Björk, O Hertting, A Nilsson
BACKGROUND: Children undergoing cancer therapy are at risk for infectious complications that require hospitalization and antimicrobial therapy. Host factors such as age and underlying disease may predict the risk of severe infections in these children. To describe the increased morbidity due to infections in children with cancer, we characterized the antibiotic use during the infectious complications in a national cohort of children 7-16 years of age with cancer. PROCEDURE: Data on infectious complications were prospectively collected from the medical records of all newly diagnosed children with cancer, aged 7-16 years, in Sweden between 2004 and 2006...
January 11, 2017: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/28073923/what-to-do-when-patients-with-epilepsy-cannot-take-their-usual-oral-medications
#20
Anna M Bank, Jong Woo Lee, Patricia Krause, Aaron L Berkowitz
When people with epilepsy are hospitalised for medical or surgical conditions, they may be unable to take their home antiepileptic drugs (AEDs). Such 'nil by mouth' people with epilepsy require alternative AED regimens to prevent breakthrough seizures. Here, we describe several strategies for maintaining seizure control in patients with epilepsy who have medical or surgical contraindications to their home oral regimens. These strategies include using non-pill oral formulations, using an intravenous formulation of the patient's home AED(s), using a benzodiazepine bridge and/or using alternative intravenous AED(s) when there are no intravenous formulations...
January 10, 2017: Practical Neurology
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