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https://www.readbyqxmd.com/read/28531995/scavenging-free-radicals-and-soaring-osteoinduction-by-extra-cellular-matrix-protein-based-nanocomposites-on-degenerative-bone-treatments
#1
Kavitha Kandiah, Navaneethan Duraisamy, Vinoth Amirthalingam, Balagurunathan Ramasamy
A number of materials are now available to alleviate the ever-growing bone disruption. However, these are inadequate and inappropriate for addressing issues associated natural process of aging and degeneration of bone due to diseases. This study advances the existing material and offers more privileged and synergistically active remedy for these conditions. Here, they are three different nano-composites prepared such as nano-TiO2 with chitosan (TC), nano-TiO2 with chondroitin 4-sulfate (TG), and nano-TiO2 with chitosan and chondroitin 4-sulfate (TCG), whereas nano-TiO2 act as a control...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28531804/protective-effect-and-mechanism-of-lycopene-on-endothelial-progenitor-cells-epcs-from-type-2-diabetes-mellitus-rats
#2
Yao-Chi Zeng, Li-Sheng Peng, Liyuan Zou, Shu-Fen Huang, Yi Xie, Gui-Ping Mu, Xue-Hui Zeng, Xi-Lin Zhou, Ya-Chi Zeng
Endothelial progenitor cells (EPCs), widely existing in bone marrow and peripheral blood, are involved in the repair of injured vascular endothelium and angiogenesis which are important to diabetic mellitus (DM) patients with vascular complications. The number and the function of EPCs are related to the advanced glycation end products (AGEs) generated in DM patients. Lycopene (Lyc) is an identified natural antioxidant that protects EPCs under the microenvironment of AGEs from damage. However, the underlying mechanism remains unclear...
May 19, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28529701/recent-advances-in-the-management-of-dry-age-related-macular-degeneration-a-review
#3
REVIEW
Francesco Bandello, Riccardo Sacconi, Lea Querques, Eleonora Corbelli, Maria Vittoria Cicinelli, Giuseppe Querques
Age-related macular degeneration (AMD), the most important cause of vision loss in elderly people, is a degenerative disorder of the central retina with a multifactorial etiopathology. AMD is classified in dry AMD (d-AMD) or neovascular AMD depending on the presence of choroidal neovascularization. Currently, no therapy is approved for geographic atrophy, the late form of d-AMD, because no treatment can restore the damage of retinal pigment epithelium (RPE) or photoreceptors. For this reason, all treatment approaches in d-AMD are only likely to prevent and slow down the progression of existing atrophy...
2017: F1000Research
https://www.readbyqxmd.com/read/28529645/tumor-penetrating-theranostic-nanoparticles-for-enhancement-of-targeted-and-image-guided-drug-delivery-into-peritoneal-tumors-following-intraperitoneal-delivery
#4
Ning Gao, Erica N Bozeman, Weiping Qian, Liya Wang, Hongyu Chen, Malgorzata Lipowska, Charles A Staley, Y Andrew Wang, Hui Mao, Lily Yang
The major obstacles in intraperitoneal (i.p.) chemotherapy of peritoneal tumors are fast absorption of drugs into the blood circulation, local and systemic toxicities, inadequate drug penetration into large tumors, and drug resistance. Targeted theranostic nanoparticles offer an opportunity to enhance the efficacy of i.p. therapy by increasing intratumoral drug delivery to overcome resistance, mediating image-guided drug delivery, and reducing systemic toxicity. Herein we report that i.p. delivery of urokinase plasminogen activator receptor (uPAR) targeted magnetic iron oxide nanoparticles (IONPs) led to intratumoral accumulation of 17% of total injected nanoparticles in an orthotopic mouse pancreatic cancer model, which was three-fold higher compared with intravenous delivery...
2017: Theranostics
https://www.readbyqxmd.com/read/28529157/protective-treatments-and-their-target-retinal-ganglion-cells-in-diabetic-retinopathy
#5
REVIEW
Jing Zhang, Rong Liu, Hong-Yu Kuang, Xin-Yuan Gao, Hao-Ling Liu
Diabetic retinopathy(DR)is one of the complications of diabetes which could cause severe vision loss. Retinal ganglion cell(RGC)injury has been confirmed prior to micro-vascular damage. Over the past few decades, a number of animal and clinical studies have confirmed that RGC impairment leads to an early deterioration of vision in DR. Inhibition of aldose reductase (AR), advanced glycation end product (AGE), oxidative stress, glutamate toxicity, and an inflammatory response may play important roles in protecting RGCs in DR...
May 18, 2017: Brain Research Bulletin
https://www.readbyqxmd.com/read/28527877/esculetin-ameliorates-hepatic-fibrosis-in-high-fat-diet-induced-non-alcoholic-fatty-liver-disease-by-regulation-of-foxo1-mediated-pathway
#6
Anuradha Pandey, Priyank Raj, Santosh Kumar Goru, Almesh Kadakol, Vajir Malek, Nisha Sharma, Anil Bhanudas Gaikwad
BACKGROUND: Non-alcoholic fatty liver disease (NAFLD), a chronic metabolic disorder is associated with oxidative stress, inflammation and fibrotic cascades. In this study, we aimed to examine the effects of Esculetin, a well-known anti-oxidant on TGF-β1 mediated liver fibrosis and FoxO1 activity. METHODS: A non-genetic murine model for NAFLD was developed by chronic high fat diet (HFD) (58% calories from fats) feeding in Wistar rats. The plasma biochemical parameters, liver function tests, oxidative stress, and histopathological alterations were assessed...
February 4, 2017: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/28527208/neuronal-expression-of-truncated-tau-efficiently-promotes-neurodegeneration-in-animal-models-pitfalls-of-toxic-oligomer-analysis
#7
Rostislav Skrabana, Branislav Kovacech, Peter Filipcik, Norbert Zilka, Santosh Jadhav, Tomas Smolek, Eva Kontsekova, Michal Novak
Animal models of neurodegeneration induced by neuronal expression of truncated tau protein emerge as an important tool for understanding the pathogenesis of human tauopathies and for therapy development. Here we highlight common features of truncated tau models and make a critical assessment of possible pitfalls in their analysis. Particularly, the amount of soluble tau oligomers, which are suspected to be neurotoxic agents participating on the spreading of pathology inside the brain, may be overestimated due to a post-lysis oxidative tau oligomerization...
May 17, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28527041/mechanisms-of-acupuncture-therapy-for-cerebral-ischemia-an-evidence-based-review-of-clinical-and-animal-studies-on-cerebral-ischemia
#8
REVIEW
Wen Zhu, Yang Ye, Yi Liu, Xue-Rui Wang, Guang-Xia Shi, Shuai Zhang, Cun-Zhi Liu
Ischemic stroke is a major cause of mortality and disability worldwide. As a part of Traditional Chinese Medicine (TCM), acupuncture has been shown to be effective in promoting recovery after stroke. In this article, we review the clinical and experimental studies that demonstrated the mechanisms of acupuncture treatment for cerebral ischemia. Clinical studies indicated that acupuncture activated relevant brain regions, modulated cerebral blood flow and related molecules in stroke patients. Evidence from laboratory indicated that acupuncture regulates cerebral blood flow and metabolism after the interrupt of blood supply...
May 19, 2017: Journal of Neuroimmune Pharmacology: the Official Journal of the Society on NeuroImmune Pharmacology
https://www.readbyqxmd.com/read/28526131/metabolic-alterations-at-the-crossroad-of-aging-and-oncogenesis
#9
L Raffaghello, V Longo
Aging represents the major risk factor for cancer. Cancer and aging are characterized by a similar dysregulated metabolism consisting in upregulation of glycolysis and downmodulation of oxidative phosphorylation. In this respect, metabolic interventions can be viewed as promising strategies to promote longevity and to prevent or delay age-related disorders including cancer. In this review, we discuss the most promising metabolic approaches including chronic calorie restriction, periodic fasting/fasting-mimicking diets, and pharmacological interventions mimicking calorie restriction...
2017: International Review of Cell and Molecular Biology
https://www.readbyqxmd.com/read/28526123/-direct-mechanism-of-action-in-toxic-myopathies
#10
REVIEW
A Khelfi, M Azzouz, R Abtroun, M Reggabi, B Alamir
Toxic myopathies are a large group of disorders generated by surrounding agents and characterized by structural and/or functional disturbances of muscles. The most recurrent are those induced by commonly used medications. Illicit drugs, environmental toxins from animals, vegetables, or produced by micro-organisms as well as chemical products commonly used are significant causes of such disorders. The muscle toxicity results from multiple mechanisms at different biological levels. Many agents can induce myotoxicity through a direct mechanism in which statins, glucocorticoids and ethyl alcohol are the most representative...
May 16, 2017: Annales Pharmaceutiques Françaises
https://www.readbyqxmd.com/read/28525896/activation-of-cannabinoid-receptor-type-ii-by-am1241-protects-adipose-derived-mesenchymal-stem-cells-from-oxidative-damage-and-enhances-their-therapeutic-efficacy-in-myocardial-infarction-mice-via-stat3-activation
#11
Dong Han, Xiang Li, Wen-Si Fan, Jiang-Wei Chen, Tian-Tian Gou, Tao Su, Miao-Miao Fan, Meng-Qi Xu, Ya-Bin Wang, Sai Ma, Ya Qiu, Feng Cao
The poor survival of cells in ischemic sites diminishes the therapeutic efficacy of stem cell therapy. Previously we and others have reported that Cannabinoid receptor type II (CB2) is protective during heart ischemic injury for its anti-oxidative activity. However, whether CB2 activation could improve the survival and therapeutic efficacy of stem cells in ischemic myocardium and the underlying mechanisms remain elusive. Here, we showed evidence that CB2 agonist AM1241 treatment could improve the functional survival of adipose-derived mesenchymal stem cells (AD-MSCs) in vitro as well as in vivo...
May 4, 2017: Oncotarget
https://www.readbyqxmd.com/read/28525890/a-novel-egfr-tki-inhibitor-camp-h3bo3%C3%A2-complex-combined-with-thermal-therapy-is-a-promising-strategy-to-improve-lung-cancer-treatment-outcomes
#12
Yongpeng Tong, Chunliu Huang, Junfang Zhang
PURPOSE: Although EGFR-TKIs (epidermal growth factor receptor tyrosine kinase inhibitors) induce favorable responses as first-line non-small cell lung cancer treatments, drug resistance remains a serious problem. Meanwhile, thermal therapy also shows promise as a cancer therapy strategy. Here we combine a novel EGFR-TKI treatment with thermal therapy to improve lung cancer treatment outcomes. RESULTS: The results suggest that the cAMP-H3BO3 complex effectively inhibits EGFR auto-phosphorylation, while inducing apoptosis and cell cycle arrest in vitro...
May 5, 2017: Oncotarget
https://www.readbyqxmd.com/read/28525804/recombinant-adeno-associated-virus-vector-carrying-the-thrombomodulin-lectin-like-domain-for-the-treatment-of-abdominal-aortic-aneurysm
#13
Chao-Han Lai, Kuan-Chieh Wang, Cheng-Hsiang Kuo, Fang-Tzu Lee, Tsung-Lin Cheng, Bi-Ing Chang, Yu-Jen Yang, Guey-Yueh Shi, Hua-Lin Wu
BACKGROUND AND AIMS: Thrombomodulin (TM), through its lectin-like domain (TMD1), sequesters proinflammatory high-mobility group box 1 (HMGB1) to prevent it from engaging the receptor for advanced glycation end product (RAGE) that sustains inflammation and tissue damage. Our previous study demonstrated that short-term treatment with recombinant TM containing all the extracellular domains (i.e., rTMD123) inhibits HMGB1-RAGE signaling and confers protection against CaCl2-induced AAA formation...
March 18, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/28524859/mesenchymal-stem-cells-sense-mitochondria-released-from-damaged-cells-as-danger-signals-to-activate-their-rescue-properties
#14
Meriem Mahrouf-Yorgov, Lionel Augeul, Claire Crola Da Silva, Maud Jourdan, Muriel Rigolet, Sylvie Manin, René Ferrera, Michel Ovize, Adeline Henry, Aurélie Guguin, Jean-Paul Meningaud, Jean-Luc Dubois-Randé, Roberto Motterlini, Roberta Foresti, Anne-Marie Rodriguez
Mesenchymal stem cells (MSCs) protect tissues against cell death induced by ischemia/reperfusion insults. This therapeutic effect seems to be controlled by physiological cues released by the local microenvironment following injury. Recent lines of evidence indicate that MSC can communicate with their microenvironment through bidirectional exchanges of mitochondria. In particular, in vitro and in vivo studies report that MSCs rescue injured cells through delivery of their own mitochondria. However, the role of mitochondria conveyed from somatic cells to MSC remains unknown...
May 19, 2017: Cell Death and Differentiation
https://www.readbyqxmd.com/read/28524738/selexipag-a-selective-prostacyclin-receptor-agonist-in-pulmonary-arterial-hypertension-a-pharmacology-review
#15
Jesús Honorato Pérez
Pulmonary hypertension is defined by a mean pulmonary artery pressure ≥25 mm Hg at rest. Management of pulmonary arterial hypertension (PAH) includes specific drug therapy with calcium channel blockers in vasoreactive patients, or drugs approved for PAH in non-reactive patients that target the endothelin, nitric-oxide and prostacyclin pathways. Areas covered: The review covers receptor selectivity, pharmacokinetics, pharmacodynamics and adverse effects (AEs) of intravenous (IV) epoprostenol (synthetic prostacyclin); the prostacyclin analogs iloprost, beraprost, and treprostinil administered by IV, subcutaneous, inhaled or oral routes; and the oral selective prostacyclin receptor agonist selexipag...
May 19, 2017: Expert Review of Clinical Pharmacology
https://www.readbyqxmd.com/read/28524718/placental-protein-13-pp13-induced-vasodilation-of-resistance-arteries-from-pregnant-and-nonpregnant-rats-occurs-via-endothelial-signaling-pathways
#16
Tijana Drobnjak, Sveinbjörn Gizurarson, Natalia I Gokina, Hamutal Meiri, Maurizio Mandalá, Berthold Huppertz, George Osol
Placental protein 13 (PP13) induces hypotension in rats. This study aims to evaluate PP13 effects on isolated uterine arteries from nonpregnant and mid-pregnant rats. Vessels were isolated, cannulated, and pressurized to 50 mmHg within an arteriograph, preconstricted and exposed to increasing PP13 concentrations (10(-13)-10(-8) M). PP13 elicited 38-50% arterial vasodilation with half-maximum response (EC50) = 1 pM. The relaxation was mediated by activating the endothelial-signaling pathways of prostaglandin and nitric oxide (NO)...
May 19, 2017: Hypertension in Pregnancy
https://www.readbyqxmd.com/read/28524367/transplantation-of-human-villous-trophoblasts-preserves-cardiac-function-in-mice-with-acute-myocardial-infarction
#17
Zegen Wang, Ningzheng Dong, Yayan Niu, Zhiwei Zhang, Ce Zhang, Meng Liu, Tiantian Zhou, Qingyu Wu, Ke Cheng
Over the past decade, cell therapies have provided promising strategies for the treatment of ischaemic cardiomyopathy. Particularly, the beneficial effects of stem cells, including bone marrow stem cells (BMSCs), endothelial progenitor cells (EPCs), mesenchymal stem cells (MSCs), embryonic stem cells (ESCs), and induced pluripotent stem cells (iPSCs), have been demonstrated by substantial preclinical and clinical studies. Nevertheless stem cell therapy is not always safe and effective. Hence, there is an urgent need for alternative sources of cells to promote cardiac regeneration...
May 19, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28522841/near-infrared-heptamethine-cyanine-based-iron-oxide-nanoparticles-for-tumor-targeted-multimodal-imaging-and-photothermal-therapy
#18
Sejy Lee, Reju George Thomas, Myeong Ju Moon, Hyeong Ju Park, In-Kyu Park, Byeong-Il Lee, Yong Yeon Jeong
Near-infrared fluorescent (NIRF) imaging modality holds great promise for tumor detection and offers several advantages of bioimaging, such as high tissue penetration with less background scattering. The disadvantage of NIRF bioimaging is that it has very low spatial resolution. Thus, the combination of NIRF with magnetic resonance imaging (MRI) is a good option because MRI can provide anatomical information with a higher resolution. Heptamethine cyanine dye (MHI-148) has been reported to have tumor-targeting capability which was used here as the NIRF agent...
May 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28522341/systemic-and-ocular-fluid-compounds-as-potential-biomarkers-in-age-related-macular-degeneration
#19
REVIEW
Eveline Kersten, Constantin C Paun, Rosa L Schellevis, Carel B Hoyng, Cécile Delcourt, Imre Lengyel, Tunde Peto, Marius Ueffing, Caroline C W Klaver, Sascha Dammeier, Anneke I den Hollander, Eiko K de Jong
Biomarkers can help unravel mechanisms of disease and identify new targets for therapy. They can also be useful in clinical practice for monitoring disease progression, evaluation of treatment efficacy and risk assessment in multifactorial diseases, such as age-related macular degeneration (AMD). AMD is a highly prevalent progressive retinal disorder for which multiple genetic and environmental risk factors have been described, but the exact etiology is not yet fully understood. Many compounds have been evaluated for their association with AMD...
May 15, 2017: Survey of Ophthalmology
https://www.readbyqxmd.com/read/28522191/enhanced-tumor-therapy-via-drug-co-delivery-and-in-situ-vascular-promoting-strategy
#20
Mingxing Yin, Songwei Tan, Yuling Bao, Zhiping Zhang
Conventional tumor starving therapy by reducing its vessel density may be effective at early treatment but potentially contributes to tumor hypoxia, drug resistance and metastasis. A new strategy through enhancing tumor angiogenesis in combination with effective chemotherapeutic drugs, has shown successful tumor growth and spread inhibition. To achieve in situ release of angiogenic and antitumor drugs in tumor, we designed a precise ratiometric polymeric hybrid micelle system for co-delivering nitric oxide and paclitaxel...
May 15, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
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