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https://www.readbyqxmd.com/read/28107458/neuropilin-1-involvement-in-choroidal-and-retinal-neovascularisation
#1
Patricia Fernández-Robredo, Senthil Selvam, Michael B Powner, Dawn A Sim, Marcus Fruttiger
PURPOSE: Inhibiting VEGF is the gold standard treatment for neovascular age-related macular degeneration (AMD). It is also effective in preventing retinal oedema and neovascularisation (NV) in diabetic retinopathy (DR) and retinal vein occlusions (RVO). Neuropilin 1 (Nrp1) is a co-receptor for VEGF and many other growth factors, and therefore a possible alternative drug target in intra ocular neovascular disease. Here we assessed choroidal and retinal NV in an inducible, endothelial specific knock out model for Nrp1...
2017: PloS One
https://www.readbyqxmd.com/read/28106982/a-novel-iron-ii-preferring-dopamine-agonist-chelator-as-potential-symptomatic-and-neuroprotective-therapeutic-agent-for-parkinson-s-disease
#2
Banibrata Das, Ashoka Kandegedara, Liping Xu, Tamara Antonio, Timothy L Stemmler, Maarten E A Reith, Aloke K Dutta
Parkinson's disease (PD) is a progressive neurodegenerative disorder and development of disease-modifying treatment is still an unmet medical need. Considering the implication of free iron (II) in PD, we report here the design and characterization of a novel hybrid iron chelator, (-)-12 (D-607) as a multitarget-directed ligand against PD. Binding and functional assays at dopamine D2/D3 receptors indicate potent agonist activity of (-)-12. The molecule displayed an efficient preferential iron (II) chelation properties along with potent in vivo activity in a reserpinized PD animal model...
January 20, 2017: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/28106826/colorectal-carcinoma-a-general-overview-and-future-perspectives-in-colorectal-cancer
#3
REVIEW
Inés Mármol, Cristina Sánchez-de-Diego, Alberto Pradilla Dieste, Elena Cerrada, María Jesús Rodriguez Yoldi
Colorectal cancer (CRC) is the third most common cancer and the fourth most common cause of cancer-related death. Most cases of CRC are detected in Western countries, with its incidence increasing year by year. The probability of suffering from colorectal cancer is about 4%-5% and the risk for developing CRC is associated with personal features or habits such as age, chronic disease history and lifestyle. In this context, the gut microbiota has a relevant role, and dysbiosis situations can induce colonic carcinogenesis through a chronic inflammation mechanism...
January 19, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28106777/neuroprotection-by-caffeine-in-hyperoxia-induced-neonatal-brain-injury
#4
Stefanie Endesfelder, Ulrike Weichelt, Evelyn Strauß, Anja Schlör, Marco Sifringer, Till Scheuer, Christoph Bührer, Thomas Schmitz
Sequelae of prematurity triggered by oxidative stress and free radical-mediated tissue damage have coined the term "oxygen radical disease of prematurity". Caffeine, a potent free radical scavenger and adenosine receptor antagonist, reduces rates of brain damage in preterm infants. In the present study, we investigated the effects of caffeine on oxidative stress markers, anti-oxidative response, inflammation, redox-sensitive transcription factors, apoptosis, and extracellular matrix following the induction of hyperoxia in neonatal rats...
January 18, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28106556/an-improved-drugs-screening-system-reveals-that-baicalein-ameliorates-the-a%C3%AE-ampa-nmda-induced-depolarization-of-neurons
#5
Tian-Syuan Lin, Han-Jung Tsai, Chih-Han Lee, Yan-Qing Song, Rih-Sheng Huang, Hsiu-Mei Hsieh-Li, Mei-Chih Liang, Yenshou Lin
The presence of amyloid-β (Aβ) plaque and tau protein hyperphosphorylation in brain tissue is the pathological hallmark of Alzheimer's disease (AD). At least some Aβ neurotoxicity is caused by the presence of excess glutamate that has been induced by Aβ accumulation. Memantine is currently the only NMDA receptor inhibitor approved for treating moderate-to-severe AD patients. We utilized primary cortical neurons and DiBAC4(3), a slow-response voltage sensitive fluorescence dye, to create a novel system for screening herbal medicines that allows the identification of pure compounds able to ameliorate Aβ-induced abnormal depolarization...
January 18, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28106379/sustainable-release-of-vancomycin-from-silk-fibroin-nanoparticles-for-treating-severe-bone-infections-in-a-rat-tibia-osteomyelitis-model
#6
Negar Hassani Besheli, Fatemeh Mottaghitalab, Masoud Eslami, Mahdi Gholami, Subhas C Kundu, David L Kaplan, Mehdi Farokhi
The successful treatment of bone infections is a major challenge in the field of orthopedics. There are some common methods for treating bone infections, including systemic antibiotic administration, local non-degradable drug vehicles, and surgical debridement and each of these approaches has advantages and disadvantages. In the present study, the antibiotic vancomycin (VANCO) was loaded in silk fibroin nanoparticles (SFNPs) and the complexes were then entrapped in silk scaffolds to form sustained drug delivery systems...
January 20, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28106278/caffeine-prevents-blood-retinal-barrier-damage-in-a-model-in-vitro-of-diabetic-macular-edema
#7
Grazia Maugeri, Agata Grazia D'Amico, Daniela Maria Rasà, Valentina La Cognata, Salvatore Saccone, Rita Federico, Sebastiano Cavallaro, Velia D'Agata
Diabetic macular edema (DME) is the major cause of vision loss in patients affected by diabetic retinopathy. Hyperglycemia and hypoxia, represent the key elements in the progression of this pathologies, leading to breakdown of the blood-retinal barrier (BRB). Caffeine, a psychoactive substance largely consumed in the world, is a nonselective antagonist of adenosine receptors (AR) and it possesses a protective effect in various diseases, including eye pathologies. Here, we have investigated the effect of this substance on BRB integrity following exposure to hyperglycemic/hypoxic insult...
January 20, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28105728/invention-of-stimulus-responsive-peptide-bond-cleaving-residue-spr-and-its-application-to-chemical-biology-tools
#8
Akira Shigenaga, Jun Yamamoto, Taiki Kohiki, Tsubasa Inokuma, Akira Otaka
Elucidation of biological functions of peptides and proteins is essential for understanding peptide/protein-related biological events and developing drugs. Caged peptides and proteins that release a parent active peptide/protein by photo-irradiation have successfully been employed to elucidate the functions. Whereas the usual caged peptide/protein enables conversion of an inactive form to an active form (OFF-to-ON conversion) by photo-induced deprotection, photo-triggered main chain cleavage is reported to be applicable to ON-to-OFF conversion...
January 19, 2017: Journal of Peptide Science: An Official Publication of the European Peptide Society
https://www.readbyqxmd.com/read/28105567/effects-of-oleuropein-on-pentylenetetrazol-induced-seizures-in-mice-involvement-of-opioidergic-and-nitrergic-systems
#9
Nastaran Rahimi, Bahram Delfan, Nazgol Motamed-Gorji, Ahmad R Dehpour
Oleuropein, a well-known olive polyphenol, has been shown to mediate neuroprotection in Alzheimer's disease and cerebral ischemia. We investigated the effects of oleuropein on pentylenetetrazole (PTZ)-induced seizures in male NMRI mice, with diazepam as the standard drug. We also examined the possible involvement of opioidergic/nitrergic pathways in the probable effects of oleuropein. Intraperitoneal (i.p.) administration of different doses of oleuropein (10, 20 and 30 mg/kg) significantly increased the seizure threshold 60 min prior to induction of seizure, in a dose-dependent manner...
January 19, 2017: Journal of Natural Medicines
https://www.readbyqxmd.com/read/28105242/skin-toxicity-in-a-patient-with-ovarian-cancer-treated-with-pegylated-liposomal-doxorubicin-a-case-report-and-review-of-the-literature
#10
Joanna Kubicka-Wołkowska, Magdalena Kędzierska, Maja Lisik-Habib, Piotr Potemski
Pegylated liposomal doxorubicin (PLD) is a form of doxorubicin enclosed in pegylated liposomes. In contrast to conventional doxorubicin, PLD is characterized by a lower incidence of cardiotoxicity and myelosuppression. However, it induces specific mucocutaneous side effects, particularly palmar-plantar erythrodysesthesia (PPE). Other dermal manifestations, such as intertrigo-like dermatitis, diffuse follicular rash, melanotic macules, maculopapular rash or recall phenomenon are less common. Mechanisms that lead to skin toxicity remain unclear, however, certain reports indicate that drug excretion in sweat, host-vs...
December 2016: Oncology Letters
https://www.readbyqxmd.com/read/28105206/curcumin-enhances-temsirolimus-induced-apoptosis-in-human-renal-carcinoma-cells-through-upregulation-of-yap-p53
#11
Shan Xu, Zheng Yang, Yizeng Fan, Bing Guan, Jing Jia, Yang Gao, Ke Wang, Kaijie Wu, Xinyang Wang, Pengsheng Zheng, Dalin He, Peng Guo
Curcumin has frequently been used as a therapeutic agent in the treatment of various types of disease and is known to enhance the drug sensitivity of cells. In the present study, the combined effect of curcumin and temsirolimus treatment on apoptosis in human renal cell carcinoma (RCC) cells was investigated. Temsirolimus is an inhibitor of the mechanistic target of rapamycin signaling pathway and used in the first-line treatment of metastatic RCC. It was demonstrated that curcumin combined with temsirolimus markedly induced apoptosis in RCC cells, however this effect was not observed following curcumin or temsirolimus treatment alone...
December 2016: Oncology Letters
https://www.readbyqxmd.com/read/28103966/chemotherapy-of-leishmaniasis-present-challenges
#12
Silvia R B Uliana, Cristiana T Trinconi, Adriano C Coelho
Cutaneous and visceral leishmaniasis are amongst the most devastating infectious diseases of our time, affecting millions of people worldwide. The treatment of these serious diseases rely on a few chemotherapeutic agents, most of which are of parenteral use and induce severe side-effects. Furthermore, rates of treatment failure are high and have been linked to drug resistance in some areas. Here, we reviewed data on current chemotherapy practice in leishmaniasis. Drug resistance and mechanisms of resistance are described as well as the prospects for applying drug combinations for leishmaniasis chemotherapy...
January 20, 2017: Parasitology
https://www.readbyqxmd.com/read/28103867/efficacy-of-teriparatide-in-the-treatment-of-nontraumatic-osteonecrosis-of-the-femoral-head-a-retrospective-comparative-study-with-alendronate
#13
Ryuta Arai, Daisuke Takahashi, Masahiro Inoue, Tohru Irie, Tsuyoshi Asano, Takuya Konno, Mohamad Alaa Terkawi, Tomohiro Onodera, Eiji Kondo, Norimasa Iwasaki
BACKGROUND: Collapse of the femoral head associated with nontraumatic osteonecrosis (NOFH) is one of the most common causes of disability in young adult patients. Excessive bone resorption by osteoclast coincident with the suppression of osteogenesis are believed to be responsible for collapse progression. Alendronate that inhibits bone resorption by inducing osteoclast apoptosis has been traditionally used for treating NOFH; however, several reports documented serious complications by the use of this drug...
January 19, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28103010/a-fluorescent-hsp90-probe-demonstrates-the-unique-association-between-extracellular-hsp90-and-malignancy-in-vivo
#14
Lauren B Crowe, Philip F Hughes, David A Alcorta, Takuya Osada, Aaron P Smith, Juliane Totzke, David R Loiselle, Isaac D Lutz, Madhusudhana Gargesha, Debasish Roy, Jose Roques, David Darr, H Kim Lyerly, Neil L Spector, Timothy Aj Haystead
Extracellular expression of heat shock protein 90 (eHsp90) by tumor cells is correlated with malignancy. Development of small molecule probes that can detect eHsp90 in vivo may therefore have utility in the early detection of malignancy. We synthesized a cell impermeable far-red fluorophore-tagged Hsp90 inhibitor to target eHsp90 in vivo. High resolution confocal and lattice light sheet microscopy show that probe-bound eHsp90 accumulates in punctate structures on the plasma membrane of breast tumor cells and is actively internalized...
January 19, 2017: ACS Chemical Biology
https://www.readbyqxmd.com/read/28102848/statins-in-anthracycline-induced-cardiotoxicity-rac-and-rho-and-the-heartbreakers
#15
REVIEW
Christian Henninger, Gerhard Fritz
Cancer patients receiving anthracycline-based chemotherapy are at risk to develop life-threatening chronic cardiotoxicity with the pathophysiological mechanism of action not fully understood. Besides the most common hypothesis that anthracycline-induced congestive heart failure (CHF) is mainly caused by generation of reactive oxygen species, recent data point to a critical role of topoisomerase II beta (TOP2B), which is a primary target of anthracycline poisoning, in the pathophysiology of CHF. As the use of the only clinically approved cardioprotectant dexrazoxane has been limited by the FDA in 2011, there is an urgent need for alternative cardioprotective measures...
January 19, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28102731/microfluidic-whole-blood-testing-of-platelet-response-to-pharmacological-agents
#16
Ruizhi Li, Tilo Grosser, Scott L Diamond
Platelets present a number of intracellular and transmembrane targets subject to pharmacological modulation, either for cardiovascular disease reduction or as an unintended drug response. Microfluidic devices allow human blood to clot on a defined surface under controlled hemodynamic and pharmacological conditions. The potencies of a number of antiplatelet and anticancer drugs have been tested with respect to platelet deposition on collagen under flow. Inhibitors of cyclooxygenase-1 (COX-1) reduce platelet deposition, either when added ex vivo to blood or ingested orally by patients prior to testing...
January 19, 2017: Platelets
https://www.readbyqxmd.com/read/28102525/environmental-chemicals-and-aging
#17
REVIEW
Brandon L Pearson, Dan Ehninger
PURPOSE OF REVIEW: Innovations in agriculture and medicine as well as industrial and domestic technologies are essential for the growing and aging global population. These advances generally require the use of novel natural or synthetic chemical agents with the potential to affect human health. Here, we attempt to highlight environmental chemicals and select drugs with the potential to exacerbate aging by directly affecting molecular aging cascades focusing particular attention on the brain...
January 19, 2017: Current Environmental Health Reports
https://www.readbyqxmd.com/read/28102083/development-and-characterization-of-morin-hydrate-loaded-microemulsion-for-the-management-of-alzheimer-s-disease
#18
Dheeraj Sharma, Manpreet Singh, Punnet Kumar, Vir Vikram, Neeraj Mishra
The aim of this study is to prepare and characterize intranasal delivery of morin hydrate loaded microemulsion for the management of Alzheimer's diseases. After intranasal delivery, brain and blood drug concentrations were found to be higher for optimized morin hydrate loaded microemulsion as compared to plain morin hydrate. Significant (P < 0.05) reduction in assessed pharmacodynamic parameters was observed after intranasal administration of morin hydrate loaded microemulsion as compared to sham control group...
January 19, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/28101910/a-practical-approach-to-vaccination-of-patients-with-autoimmune-inflammatory-rheumatic-diseases-in-australia
#19
REVIEW
Peter Kk Wong, Hanish Bagga, Claire Barrett, Paddy Hanrahan, Doug Johnson, Amel Katrib, Karin Leder, Mona Marabani, Peta Pentony, John Riordan, Ray White, Laurel Young
Autoimmune inflammatory rheumatic diseases (AIIRD) such as rheumatoid arthritis (RA), psoriatic arthritis (PsA) and ankylosing spondylitis (AS) are often complicated by infection, which results in significant morbidity and mortality. The increased risk of infection is probably due to a combination of immunosuppressive effects of the AIIRD, comorbidities, and the use of immunosuppressive conventional synthetic disease modifying anti-rheumatic drugs (DMARDS) and more recently, targeted synthetic DMARDS and biologic DMARDS which block specific pro-inflammatory enzymes, cytokines or cell types...
January 19, 2017: Internal Medicine Journal
https://www.readbyqxmd.com/read/28101677/emesis-and-nausea-related-to-single-agent-trabectedin-in-ovarian-cancer-patients-a-sub-study-of-the-mito15-project
#20
Marilena Di Napoli, Chiara Della Pepa, Laura Arenare, Giovanni Scambia, Domenica Lorusso, Francesco Raspagliesi, Gabriella Ferrandina, Vanda Salutari, Roberto Sorio, Anna Maria Mosconi, Giorgia Mangili, Lucia Borgato, Stefano Lepori, Angela Salvino, Sandro Pignata, Sabrina Chiara Cecere
The MITO 15 was a prospective, single-arm trial, evaluating trabectedin monotherapy in patients with recurrent ovarian cancer (OC) who were BRCA mutation-carriers or had a BRCAness phenotype. It is largely reported that trabectedin may induce nausea and vomiting but the real emetogenic potential of the drug, in the different schedules, has never been fully described; furthermore, OC patients are known to have an enhanced risk of developing nausea and vomiting due to female gender, abdominal spreading of the disease, and major surgery experienced by most of them...
January 19, 2017: Supportive Care in Cancer: Official Journal of the Multinational Association of Supportive Care in Cancer
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