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https://www.readbyqxmd.com/read/28728159/oxamate-enhances-the-anti-inflammatory-and-insulin-sensitizing-effects-of-metformin-in-diabetic-mice
#1
Mu-Chao Wu, Wei-Ran Ye, Yi-Jia Zheng, Shan-Shan Zhang
Metformin (MET) is the first-line drug for treating type 2 diabetes mellitus (T2DM). However, MET increases blood lactate levels in patients with T2DM. Lactate possesses proinflammatory properties and causes insulin resistance (IR). Oxamate (OXA), a lactate dehydrogenase inhibitor, can decrease tissue lactate production and blood lactate levels. This study was conducted to examine the effects of the combination of OXA and MET on inflammation, and IR in diabetic db/db mice. Supplementation of OXA to MET led to lowered tissue lactate production and serum lactate levels compared to MET alone, accompanied with further decreased tissue and blood levels of pro-inflammatory cytokines, along with better insulin sensitivity, beta-cell mass, and glycemic control in diabetic db/db mice...
July 21, 2017: Pharmacology
https://www.readbyqxmd.com/read/28728150/fisher-discrimination-of-metabolic-changes-in-rats-treated-with-aspirin-and-ibuprofen
#2
Jing Zhang, Huanchun Song, Shuying Jiang, Zhibin Chen, Shuhua Tong, Feiyan Lin, Congcong Wen, Xiuhua Zhang, Lufeng Hu
BACKGROUND: Aspirin and ibuprofen are the most frequently prescribed non-steroidal anti-inflammatory drugs in the world. However, both are associated with a variety of toxicities. We applied serum metabonomics and Fisher discrimination for the early diagnosis of its toxic reaction in order to help diagnose these toxicities. METHODS: A total of 45 rats were randomly divided into Control group, Aspirin group, and Ibuprofen groups. The experiment groups were given intragastric aspirin (15 mg/kg) or ibuprofen (15 mg/kg) for 3 weeks...
July 21, 2017: Pharmacology
https://www.readbyqxmd.com/read/28727999/drug-ion-co-delivery-multi-functional-nanocarrier-to-regenerate-infected-tissue-defect
#3
Jung-Hwan Lee, Ahmed El-Fiqi, Nandin Mandakhbayar, Hae-Hyoung Lee, Hae-Won Kim
Regeneration of infected tissues is a globally challenging issue in medicine and dentistry. Common clinical therapies involving a complete removal of infected areas together with a treatment of antimicrobial drugs are often suboptimal. Biomaterials with anti-bacterial and pro-regenerative potential can offer a solution to this. Here we design a novel nanocarrier based on a mesoporous silicate-calcium glass by doping with Ag ions and simultaneously loading antimicrobial drugs onto mesopores. The nanocarriers could controllably release multiple ions (silver, calcium, and silicate) and drugs (tetracycline or chlorohexidine) to levels therapeutically relevant, and effectively internalize to human dental stem cells (∼90%) with excellent viability, ultimately stimulating odontogenic differentiation...
July 12, 2017: Biomaterials
https://www.readbyqxmd.com/read/28727804/effects-of-pre-surgical-administration-of-prostaglandin-analogs-on-the-outcome-of-trabeculectomy
#4
Takako Miki, Tomoko Naito, Miyuki Fujiwara, Ryoichi Araki, Rieko Kiyoi, Yusuke Shiode, Atsushi Fujiwara, Yuki Morizane, Fumio Shiraga
For primary open angle glaucoma (POAG), laser treatment or surgery is used when the target intraocular pressure (IOP) cannot be achieved by pharmacological agents, such as prostaglandin (PG) analogs; these drugs also have varied effects. We retrospectively reviewed the medical records of 74 POAG patients (74 eyes) whose IOP was inadequately controlled by PG analogs (bimatoprost [13 eyes], latanoprost [34 eyes], tafluprost [11 eyes], and travoprost [16 eyes]) and underwent primary trabeculectomy. The proportion of patients with no recurrent IOP elevation within 24 months post-trabeculectomy was significantly (P < 0...
2017: PloS One
https://www.readbyqxmd.com/read/28727774/inhibitors-of-mycobacterium-marinum-virulence-identified-in-a-dictyostelium-discoideum-host-model
#5
Hajer Ouertatani-Sakouhi, Sébastien Kicka, Gianpaolo Chiriano, Christopher F Harrison, Hubert Hilbi, Leonardo Scapozza, Thierry Soldati, Pierre Cosson
Tuberculosis remains one of the major threats to public health worldwide. Given the prevalence of multi drug resistance (MDR) in Mycobacterium tuberculosis strains, there is a strong need to develop new anti-mycobacterial drugs with modes of action distinct from classical antibiotics. Inhibitors of mycobacterial virulence might target new molecular processes and may represent a potential new therapeutic alternative. In this study, we used a Dictyostelium discoideum host model to assess virulence of Mycobacterium marinum and to identify compounds inhibiting mycobacterial virulence...
2017: PloS One
https://www.readbyqxmd.com/read/28727765/defining-the-target-and-the-effect-of-imatinib-on-the-filarial-c-abl-homologue
#6
Elise M O'Connell, Olena Kamenyeva, Sara Lustigman, Aaron Bell, Thomas B Nutman
BACKGROUND: Previously we demonstrated the micro- and macrofilaricidal properties of imatinib in vitro. Here we use electron and multiphoton microscopy to define the target of imatinib in the adult and microfilarial stages of Brugia malayi, and assess the effects of pharmacologically relevant levels of imatinib on the adult parasites. METHODS: After fixation of adult B. malayi males and females, sections were stained with polyclonal rabbit anti-c-Abl antibody (or isotype control) and imaged with multiphoton fluorescent microscopy...
July 20, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28727740/genetically-engineered-suicide-gene-in-mesenchymal-stem-cells-using-a-tet-on-system-for-anaplastic-thyroid-cancer
#7
Senthilkumar Kalimuthu, Ji Min Oh, Prakash Gangadaran, Liya Zhu, Ho Won Lee, Yong Hyun Jeon, Shin Young Jeong, Sang-Woo Lee, Jaetae Lee, Byeong-Cheol Ahn
Anaplastic thyroid cancer (ATC) is the most aggressive malignancy of the thyroid, during which undifferentiated tumors arise from the thyroid follicular epithelium. ATC has a very poor prognosis due to its aggressive behavior and poor response to conventional therapies. Gene-directed enzyme/prodrug therapy using genetically engineered mesenchymal stromal cells (MSC) is a promising therapeutic strategy. The doxycycline (DOX)-controlled Tet inducible system is the most widely utilized regulatory system and could be a useful tool for therapeutic gene-based therapies...
2017: PloS One
https://www.readbyqxmd.com/read/28727704/evaluating-the-adjuvant-effect-of-dexamethasone-to-ropivacaine-in-transversus-abdominis-plane-block-for-inguinal-hernia-repair-and-spermatocelectomy-a-randomized-controlled-trial
#8
Robert Wegner, Duane Akwar, Sarah Guzman-Reyes, Greesha Pednekar, Rabail Chaudhry, Navneet Grewal, Naveen Kukreja, Omar L Mancillas, George W Williams, Omonele Nwokolo
BACKGROUND: The transversus abdominis plane (TAP) block is a relatively straightforward regional technique used for postoperative analgesia in patients undergoing abdominal surgeries. Various adjuvants have been used in past to prolong the duration of action of analgesia in peripheral nerve blocks. Several studies investigating the analgesic efficacy of dexamethasone added to local anesthetic agents, such as bupivacaine, have shown promising results. However, there are few studies comparing the efficacy of dexamethasone with ropivacaine...
July 2017: Pain Physician
https://www.readbyqxmd.com/read/28727520/undocumented-immigration-drug-problems-and-driving-under-the-influence-in-the-united-states-1990-2014
#9
Michael T Light, Ty Miller, Brian C Kelly
OBJECTIVES: To examine the influence of undocumented immigration in the United States on 4 different metrics of drug and alcohol problems: drug arrests, drug overdose fatalities, driving under the influence (DUI) arrests, and DUI deaths. METHODS: We combined newly developed state-level estimates of the undocumented population between 1990 and 2014 from the Center for Migration Studies with arrest data from the Federal Bureau of Investigation Uniform Crime Reports and fatality information from the Fatality Analysis Reporting System and the Centers for Disease Control and Prevention Underlying Cause of Death database...
July 20, 2017: American Journal of Public Health
https://www.readbyqxmd.com/read/28727483/pharmacological-treatment-of-tardive-dyskinesia-recent-developments
#10
Stanley N Caroff, E Cabrina Campbell, Benjamin Carroll
Tardive dyskinesia (TD) occurs in patients receiving antipsychotic treatment with dopamine receptor antagonists. Despite the prevalence of TD and its negative impact on patients' lives, there has been a lack of approved treatments and limited evidence from controlled trials of pharmacological treatment. Areas covered: PubMed was searched for English-language papers published during 2007-2016 using terms "tardive dyskinesia" or "drug-induced movement disorder", and "treatment". Studies evaluating pharmacological agents for the treatment of TD were selected...
July 20, 2017: Expert Review of Neurotherapeutics
https://www.readbyqxmd.com/read/28727452/catalytic-intermolecular-carboamination-of-unactivated-alkenes-via-directed-aminopalladation
#11
Zhen Liu, Yanyan Wang, Zichen Wang, Tian Zeng, Peng Liu, Keary M Engle
An intermolecular 1,2-carboamination of unactivated alkenes proceeding via a Pd(II)/Pd(IV) catalytic cycle has been developed. To realize this transformation, a cleavable bidentate directing group is used to control the regioselectivity of aminopalladation and stabilize the resulting organopalladium(II) intermediate, such that oxidative addition to a carbon electrophile outcompetes potential β-hydride elimination. Under the optimized reaction conditions, a broad range of nitrogen nucleophiles and carbon electrophiles were compatible coupling partners in this reaction, affording moderate to high yields...
July 20, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28727190/tuning-the-effects-of-bacterial-membrane-permeability-through-photo-isomerization-of-antimicrobial-cationic-amphiphiles
#12
Micha Fridman, Joana Salta, Raphael I Benhamou, Ido M Herzog
Several last resort classes of antimicrobial drugs act by permeabilizing cell membranes. Here we demonstrate that insertion of a photo-isomerizable lipid into antimicrobial cationic amphiphiles can modify the intensity of their membrane-permeabilizing activity not only by their concentration but also through light-irradiation. We characterized the photo-isomerization effects of two types of cationic amphiphiles on their bacterial membrane permeabilizing activity and showed that while one photo-isomer inhibited cell growth and division, the other photo-isomer led to a rapid and lethal bacterial membrane-disrupting effect...
July 20, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28726961/functional-single-walled-carbon-nanotubes-car-for-targeting-dopamine-delivery-into-the-brain-of-parkinsonian-mice
#13
Qing Guo, Huihui You, Xu Yang, Bencheng Lin, Zhihong Zhu, Zhisong Lu, Xiaoxiao Li, Yun Zhao, Lin Mao, Shiping Shen, Haoyan Cheng, Jiting Zhang, Lingfu Deng, Jianhua Fan, Zhuge Xi, Rui Li, Chang Ming Li
Current treatments for Parkinson's disease (PD) are limited, partly due to the difficulties posed by the blood brain barrier (BBB) when delivering drugs to the brain. Herein, we explore the feasibility and efficacy of functional single-walled carbon nanotubes 'CAR' (SWCNT-PEGs-Lf) which carry and target-deliver dopamine (DA) to the brain in PD mice for treatment. SWCNTs can penetrate the cell-membrane remarkably, with the characteristics including high drug-loading and pH-dependent therapeutic unloading capacities...
July 20, 2017: Nanoscale
https://www.readbyqxmd.com/read/28726923/robust-manufacturing-of-lipid-polymer-nanoparticles-through-feedback-control-of-parallelized-swirling-microvortices
#14
Michael J Toth, Taeyoung Kim, YongTae Kim
A variety of therapeutic and/or diagnostic nanoparticles (NPs), or nanomedicines, have been formulated for improved drug delivery and imaging applications. Microfluidic technology enables continuous and highly reproducible synthesis of NPs through controlled mixing processes at the micro- and nanoscale. Yet, the inherent low-throughput remains a critical roadblock, precluding the probable applications of new nanomedicines for clinical translation. Here we present robust manufacturing of lipid-polymer NPs (LPNPs) through feedback controlled operation of parallelized swirling microvortex reactors (SMRs)...
July 20, 2017: Lab on a Chip
https://www.readbyqxmd.com/read/28726871/monitoring-of-on-demand-drug-release-using-dual-tumor-marker-mediated-dna-capped-versatile-mesoporous-silica-nanoparticles
#15
Song Wang, Fei Liu, Xiang-Ling Li
A versatile drug delivery system with dual specific capacity of controllable release and monitoring of the intracellular release process, which extremely maximize therapeutic efficacy on diseased cells while minimizing drug toxicity to healthy cells, was reported for the first time.
July 20, 2017: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/28726855/cyclodextrin-based-biological-stimuli-responsive-carriers-for-smart-and-precision-medicine
#16
Rongqiang Liao, Pin Lv, Qian Wang, Jiaoni Zheng, Bing Feng, Bo Yang
Spurred on by recent progress in nanotechnology and precision medicine, smart drug carriers are entering an entirely new era. Smart drug carriers have been widely studied in recent years as a result of their ability to control drug release under different microenvironments (such as pH, redox, and enzyme) in vivo. Host-guest interactions based on cyclodextrins have proven to be an efficient tool for fabricating smart drug carriers. Because of the application of host-guest interactions, many kinds of biological molecules or supramolecular building blocks can combine into an organic whole at the molecular level...
July 20, 2017: Biomaterials Science
https://www.readbyqxmd.com/read/28726848/patch-clamp-technique-to-characterize-ion-channels-in-enlarged-individual-endolysosomes
#17
Cheng-Chang Chen, Chunlei Cang, Stefanie Fenske, Elisabeth Butz, Yu-Kai Chao, Martin Biel, Dejian Ren, Christian Wahl-Schott, Christian Grimm
According to proteomics analyses, more than 70 different ion channels and transporters are harbored in membranes of intracellular compartments such as endosomes and lysosomes. Malfunctioning of these channels has been implicated in human diseases such as lysosomal storage disorders, neurodegenerative diseases and metabolic pathologies, as well as in the progression of certain infectious diseases. As a consequence, these channels have engendered very high interest as future drug targets. Detailed electrophysiological characterization of intracellular ion channels is lacking, mainly because standard methods to analyze plasma membrane ion channels, such as the patch-clamp technique, are not readily applicable to intracellular organelles...
August 2017: Nature Protocols
https://www.readbyqxmd.com/read/28726756/functional-implications-of-micrornas-in-crohn-s-disease-revealed-by-integrating-microrna-and-messenger-rna-expression-profiling
#18
Orazio Palmieri, Teresa Maria Creanza, Fabrizio Bossa, Tiziana Latiano, Giuseppe Corritore, Orazio Palumbo, Giuseppina Martino, Giuseppe Biscaglia, Daniela Scimeca, Massimo Carella, Nicola Ancona, Angelo Andriulli, Anna Latiano
Crohn's disease (CD) is a debilitating inflammatory bowel disease (IBD) that emerges due to the influence of genetic and environmental factors. microRNAs (miRNAs) have been identified in the tissue and sera of IBD patients and may play an important role in the induction of IBD. Our study aimed to identify differentially expressed miRNAs and miRNAs with the ability to alter transcriptome activity by comparing inflamed tissue samples with their non-inflamed counterparts. We studied changes in miRNA-mRNA interactions associated with CD by examining their differential co-expression relative to normal mucosa from the same patients...
July 20, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28726654/the-safety-and-efficacy-of-amiodarone-and-carvedilol-combination-in-treatment-of-patients-with-severe-cardiac-rhythm-disorders
#19
E Tsetskhladze, I Khintibidze
Different arrhythmias are cause of sudden death in many patients with heart failure. Amiodarone is usually used for prevent this arrhythmias, but it is not drug of choice for treatment the patients with heart failure. We retrospectively analyzed 142 patients with moderate and severe heart failure and history of myocardial infarction. These patients have received amiodarone, carvedilol or combination of these two medications together with standard therapy. In our retrospective analysis, the combination therapy with Amiodarone and Carvedilol had highly significant decrease arrhythmic death compare with carvedilol and amiodarone groups...
June 2017: Georgian Medical News
https://www.readbyqxmd.com/read/28726523/investigational-therapies-for-the-treatment-of-narcolepsy
#20
Stefano de Biase, Annacarmen Nilo, Gian Luigi Gigli, Mariarosaria Valente
Narcolepsy is a chronic sleep disorder characterized by a pentad of excessive daytime sleepiness (EDS), cataplexy, sleep paralysis, hypnagogic/hypnopompic hallucinations, and disturbed nocturnal sleep. While non-pharmacological treatments are sometimes helpful, more than 90% of narcoleptic patients require a pharmacological treatment. Areas covered: The present review is based on an extensive Internet and PubMed search from 1994 to 2017. It is focused on drugs currently in development for the treatment of narcolepsy...
July 20, 2017: Expert Opinion on Investigational Drugs
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