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https://www.readbyqxmd.com/read/28719912/crocin-protects-podocytes-against-oxidative-stress-and-inflammation-induced-by-high-glucose-through-inhibition-of-nf-%C3%AE%C2%BAb
#1
Sutong Li, Xiaoxia Liu, Jie Lei, Junle Yang, Puxun Tian, Yi Gao
BACKGROUND/AIMS: Diabetic nephropathy (DN) is a microangiopathic disease characterized by excessive urinary albumin excretion, which occurs in 30% of patients with diabetes mellitus. It is the second leading cause of end-stage renal diseases in China. Nuclear factor-kappa B (NF-κB) is reported to be closely correlated with the inflammation underlying diabetes-associated renal damage. Crocin, a plant-derived compound, has antioxidant properties that may inhibit NF-κB. METHODS: In the present study, we used a conditionally immortalized mouse podocyte cell line to explore whether crocin could effectively block albuminuria...
July 18, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28719898/role-of-mir-155-signal-pathway-in-regulating-podocyte-injury-induced-by-tgf-%C3%AE-1
#2
Xu Lin, Xintng Zhen, Haiting Huang, Haohao Wu, Yanwu You, Pengwei Guo, Xiangjun Gu, Fafen Yang
BACKGROUND/AIMS: Transforming growth factor beta 1 (TGF-β1) plays a critical role in the pathogenesis of glomerulosclerosis. The purpose of this study was to examine the effects of inhibition of miR-155 on podocyte injury induced by TGF-β1 and to determine further molecular mediators involved in the effects of miR-155. METHODS: Conditionally immortalized podocytes were cultured in vitro and they were divided into four groups: control; TGF-β1 treatment; TGF-β1 with miR-155 knockdown [using antisense oligonucleotides against miR-155 (ASO-miR-155)] and TGF-β1 with negative control antisense oligonucleotides (ASO-NC)...
July 18, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28719889/combined-23-g-pars-plana-vitrectomy-and-lensectomy-in-the-management-of-glaucoma-associated-with-nanophthalmos
#3
Zhaotian Zhang, Shaochong Zhang, Xintong Jiang, Yantao Wei
PURPOSE: To investigate the surgical results of 23-G pars plana vitrectomy (PPV) combined with lensectomy (PPL) in nanophthalmic patients with angle closure glaucoma. METHODS: This prospective nonrandomized study included consecutive patients with nanophthalmic glaucoma recruited for 23-G PPV combined with PPL. Best-corrected visual acuity (BCVA), intraocular pressure (IOP), the number of antiglaucoma medications, and surgery-associated complications were recorded...
July 19, 2017: Ophthalmic Research
https://www.readbyqxmd.com/read/28719888/inhibition-of-single-routes-of-intracellular-signaling-is-not-sufficient-to-neutralize-the-biphasic-disturbance-of-a-retinal-endothelial-cell-barrier-induced-by-vegf-a165
#4
Heidrun L Deissler, Gerhard K Lang, Gabriele E Lang
BACKGROUND/AIMS: Hallmark of diabetic macular edema is the enhanced permeability of retinal endothelial cells (REC) induced by vascular endothelial growth factor (VEGF-A165), which acts through activating specific receptors. To improve the predictability of inhibitors' potentials to block harmful effects of VEGF-A165, we investigated if its signaling pathways triggered in REC are redundant. METHODS: Immortalized bovine REC monolayers were treated with inhibitors specific for various protein kinases in combination with VEGF-A165...
July 18, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28719887/anesthetic-management-of-cytoreductive-surgery-and-hyperthermic-intraperitoneal-chemotherapy-crs-hipec-the-importance-of-hydro-electrolytic-and-acid-basic-control
#5
Fabrício Tavares Mendonça, Marília Moreira Guimarães, Sérgio Honorato de Matos, Rúbia Garcia Dusi
JUSTIFICATION AND OBJECTIVES: Patients affected by gynecological or gastrointestinal tract neoplasms that evolve to peritoneal carcinomatosis experience a significant drop in their quality of life, high morbidity and short survival times with currently available chemotherapeutic schemes. The surgical treatment based on cytoreduction and the employment of hyperthermic intraperitoneal chemotherapy in the intra-operative period is a true challenge to anesthesiologist. CASE REPORT: A 67 years old patient diagnosed with mucinous adenocarcinoma of the Appendix associated with mucinous carcinomatosis, was submitted to cytoreductive surgery (CRS) and hyperthermic intraperitoneal chemotherapy (HIPEC), under general anesthesia and epidural block...
July 10, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28719819/electrical-preconditioning-of-stem-cells-with-a-conductive-polymer-scaffold-enhances-stroke-recovery
#6
Paul M George, Tonya M Bliss, Thuy Hua, Alex Lee, Byeongtaek Oh, Alexa Levinson, Swapnil Mehta, Guohua Sun, Gary K Steinberg
Exogenous human neural progenitor cells (hNPCs) are promising stroke therapeutics, but optimal delivery conditions and exact recovery mechanisms remain elusive. To further elucidate repair processes and improve stroke outcomes, we developed an electrically conductive, polymer scaffold for hNPC delivery. Electrical stimulation of hNPCs alters their transcriptome including changes to the VEGF-A pathway and genes involved in cell survival, inflammatory response, and synaptic remodeling. In our experiments, exogenous hNPCs were electrically stimulated (electrically preconditioned) via the scaffold 1 day prior to implantation...
July 12, 2017: Biomaterials
https://www.readbyqxmd.com/read/28719738/an-activator-blocker-pair-provides-a-controllable-on-off-switch-for-a-ketosteroid-isomerase-active-site-mutant
#7
Vandana Lamba, Filip Yabukarski, Daniel Herschlag
Control of enzyme activity is fundamental to biology and represents a long-term goal in bioengineering and precision therapeutics. While several powerful molecular strategies have been developed, limitations remain in their generalizability and dynamic range. We demonstrate a control mechanism via separate small molecules that turn on the enzyme (activator) and turn off the activation (blocker). We show that a pocket created near the active site base of the enzyme ketosteriod isomerase (KSI) allows efficient and saturable base rescue when the enzyme's natural general base is removed...
July 18, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28719735/rare-earth-and-uranium-mesoionic-carbenes-a-new-class-of-f-block-carbene-complex-derived-from-an-n-heterocyclic-olefin
#8
Stephen Liddle, John Seed, Matthew Gregson, Floriana Tuna, Nicholas Chilton, Ashley Wooles, Eric McInnes
Neutral mesoionic carbenes (MICs) have emerged as an important class of carbene, however they are found only in the free form or ligated to a few d-block ions. Here, we report unprecedented f-block MIC complexes [M(N'')3{CN(Me)C(Me)N(Me)CH}] (M = U, Y, La, Nd; N'' = N(SiMe3)2). These complexes were prepared by a formal 1,4-proton migration reaction when the metal-triamides [M(N'')3] were treated with the N-heterocyclic olefin H2C=C(NMeCH)2, which constitutes a new, general way to prepare MIC complexes. Quantum chemical calculations on the 5f3 uranium(III) complex suggest the presence of a U=C donor-acceptor bond, composed of a MIC→U σ-component and a U(5f)→MIC(2p) π-back-bond, but for the d0f0 Y and La and 4f3 Nd congeners only MIC→M σ-bonding is found...
July 18, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28719717/audiometry-results-and-teoae-and-dpoae-amplitudes-in-men-taking-a-phosphodiesterase-type-5-inhibitor-for-erectile-dysfunction
#9
Sertan Öntepeli, Nuray Bayar Muluk, Devrim Tuğlu, Timuçin Şipal
We conducted a prospective study of transient evoked otoacoustic emissions (TEOAEs) and distortion-product otoacoustic emissions (DPOAEs) in men who were taking an oral phosphodiesterase type 5 (PDE5) inhibitor for erectile dysfunction. Our study group was made up of 30 men (60 ears), aged 34 to 60 years (mean: 50.9). They were randomly divided into three groups; 10 men were given sildenafil (Viagra) at 50 mg twice a week, 10 were given tadalafil (Cialis) at 20 mg twice a week, and 10 were given vardenafil (Levitra) at 20 mg twice a week...
July 2017: Ear, Nose, & Throat Journal
https://www.readbyqxmd.com/read/28719608/cholesterol-esterification-inhibition-and-imatinib-treatment-synergistically-inhibit-growth-of-bcr-abl-mutation-independent-resistant-chronic-myelogenous-leukemia
#10
Shovik Bandyopadhyay, Junjie Li, Elie Traer, Jeffrey W Tyner, Amy Zhou, Stephen T Oh, Ji-Xin Cheng
Since the advent of tyrosine kinase inhibitors (TKIs) such as imatinib, nilotinib, and dasatinib, chronic myelogenous leukemia (CML) prognosis has improved greatly. However, ~30-40% of patients develop resistance to imatinib therapy. Although most resistance is caused by mutations in the BCR-ABL kinase domain, 50-85% of these patients develop resistance in the absence of new mutations. In these cases, targeting other pathways may be needed to regain clinical response. Using label-free Raman spectromicroscopy, we evaluated a number of leukemia cell lines and discovered an aberrant accumulation of cholesteryl ester (CE) in CML, which was found to be a result of BCR-ABL kinase activity...
2017: PloS One
https://www.readbyqxmd.com/read/28719575/non-canonical-notch3-signalling-limits-tumour-angiogenesis
#11
Shuheng Lin, Ana Negulescu, Sirisha Bulusu, Benjamin Gibert, Jean-Guy Delcros, Benjamin Ducarouge, Nicolas Rama, Nicolas Gadot, Isabelle Treilleux, Pierre Saintigny, Olivier Meurette, Patrick Mehlen
Notch signalling is a causal determinant of cancer and efforts have been made to develop targeted therapies to inhibit the so-called canonical pathway. Here we describe an unexpected pro-apoptotic role of Notch3 in regulating tumour angiogenesis independently of the Notch canonical pathway. The Notch3 ligand Jagged-1 is upregulated in a fraction of human cancer and our data support the view that Jagged-1, produced by cancer cells, is inhibiting the apoptosis induced by the aberrant Notch3 expression in tumour vasculature...
July 18, 2017: Nature Communications
https://www.readbyqxmd.com/read/28719486/p16-expression-and-biological-behavior-of-flat-vulvar-low-grade-squamous-intraepithelial-lesions-lsil
#12
Natasha Lewis, Luis Z Blanco, Kruti P Maniar
Flat low-grade squamous intraepithelial lesion (LSIL) of the vulva [vulvar intraepithelial neoplasia (VIN) 1, flat condyloma] is an uncommon entity with poorly understood biological behavior. We aimed to determine the risk of subsequent vulvar high-grade squamous intraepithelial lesion (HSIL) or carcinoma following a diagnosis of vulvar LSIL/VIN 1, as well as the frequency and predictive value of p16 immunohistochemical expression in this setting. Of the 51 included cases, p16 positivity (diffuse block staining) was identified in 2 (4%)...
November 30, 2016: International Journal of Gynecological Pathology
https://www.readbyqxmd.com/read/28719457/regional-anesthesia-in-diabetic-peripheral-neuropathy
#13
Werner Ten Hoope, Marjolein Looije, Philipp Lirk
PURPOSE OF REVIEW: The aim of this review is to summarize recent relevant literature regarding regional anesthesia in the diabetic neuropathic patient and formulate recommendations for clinical practice. RECENT FINDINGS: Diabetic neuropathic nerves, but not nerves of diabetic patients per se, exhibit complex functional changes. As a result, they seem more sensitive to local anesthetics, and are more difficult to stimulate. When catheters are used postoperatively, diabetes is an independent risk factor for infection...
July 15, 2017: Current Opinion in Anaesthesiology
https://www.readbyqxmd.com/read/28719292/malaria-infection-and-gametocyte-carriage-rates-in-preparation-for-transmission-blocking-vaccine-trials-in-bancoumana-mali
#14
Mahamadoun Hamady Assadou, Issaka Sagara, Sara A Healy, Merepen Agnes Guindo, Mamady Kone, Sintry Sanogo, M'Bouye Doucoure, Sekouba Keita, Ruth D Ellis, Yimin Wu, Freda Omaswa, Patrick E Duffy, Ogobara K Doumbo
The epidemiological characterization of transmission reservoirs is a critical step in preparation for interventional trials for malaria elimination/eradication. Using cluster sampling and households/compounds as units of sampling, we recruited and followed monthly, from June 2011 to June 2012, 250 volunteers 3 months to 50 years of age in Bancoumana, Mali. In July 2012, only participants 5-35 years of age (N = 121) were reenrolled and followed for an additional year. Malaria infection prevalence was highest in October in both 2011 (21...
July 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28719220/egfr-targeted-cationic-polymeric-mixed-micelles-for-co-delivery-of-gemcitabine-and-mir-205-for-treating-advanced-pancreatic-cancer
#15
Goutam Mondal, Saud Almawash, Amit Kumar Chaudhary, Ram I Mahato
Gemcitabine (GEM), a first-line chemotherapy for pancreatic cancer undergoes rapid metabolism and develops chemoresistance after repeated administration. We previously demonstrated that the combination of GEM and miR-205 provides an effective therapeutic strategy to sensitize GEM-resistant pancreatic cancer cells. Since epidermal growth factor receptor (EGFR) is overexpressed in pancreatic cancer cells, in this study, we aimed to deliver mixed micelles containing GEM and miR-205 decorated with EGFR-targeting cetuximab (C225) monoclonal antibody for targeted therapy...
July 18, 2017: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/28719196/thermoresponsive-elastin-b-collagen-like-peptide-bioconjugate-nanovesicles-for-targeted-drug-delivery-to-collagen-containing-matrices
#16
Tianzhi Luo, Michael A David, Lucas C Dunshee, Rebecca A Scott, Morgan A Urello, Christopher Price, Kristi L Kiick
Over the past few decades, (poly)peptide block copolymers have been widely employed in generating well-defined nanostructures as vehicles for targeted drug delivery applications. We previously reported the assembly of thermoresponsive nanovesicles from an elastin-b-collagen like peptide (ELP-CLP). The nanoparticles were observed to dissociate at elevated temperatures, despite the LCST-like behavior of the tethered ELP domain, which is suggested to be triggered by the unfolding of the CLP domain. Here, the potential of using the nanoparticles as drug delivery vehicles for targeting collagen-containing matrices is evaluated...
July 18, 2017: Biomacromolecules
https://www.readbyqxmd.com/read/28719077/metformin-synergistic-pemetrexed-suppresses-non-small-cell-lung-cancer-cell-proliferation-and-invasion-in-vitro
#17
Yan Zhang, Xiuli Feng, Tao Li, Erpan Yi, Yu Li
The aim of this study was to investigate whether metformin in combination with pemetrexed has an effect on the treatment of non-small-cell lung cancer (NSCLC) models and to explore the related molecular mechanism. The half maximal inhibitory concentration (IC50) and combination index (CI) of metformin and pemetrexed were detected by the CCK8 assay to assess the antiproliferative and therapeutic effects of the two-drug combination. Flow cytometry (FCM) and invasion assays were used to estimate the variation in apoptosis rate and invasion ability of the differently treated NSCLC cell lines...
July 18, 2017: Cancer Medicine
https://www.readbyqxmd.com/read/28719065/unconventional-route-to-uniform-hollow-semiconducting-nanoparticles-with-tailorable-dimensions-compositions-surface-chemistry-and-near-infrared-absorption
#18
Yanjie He, Xinchang Pang, Beibei Jiang, Chaowei Feng, Yeu Wei Harn, Yihuang Chen, Young Jun Yoon, Shuang Pan, Cheng-Hsin Lu, Yajing Chang, Mona Zebarjadi, Zhitao Kang, Naresh Thadhani, Juan Peng, Zhiqun Lin
Despite recent impressive advances in synthesizing lead chalcogenide solid nanoparticles, there are no demonstrations of lead chalcogenide hollow nanoparticles (HNPs) with controlled hollow diameter and shell thickness as current synthetic approaches for HNPs have inherent limitations associated with inability to precisely control the dimensions and restriction of applicable materials in scope. Herein, we report on an unconventional strategy for crafting uniform PbS and PbTe HNPs with tailorable size, surface chemistry, and near-IR absorption...
July 18, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28719035/melatonin-inhibits-nucleus-pulposus-np-cell-proliferation-and-extracellular-matrix-ecm-remodeling-via-the-melatonin-membrane-receptors-mediated-pi3k-akt-pathway
#19
Zheng Li, Xingye Li, Chong Chen, Matthew T V Chan, William Ka Kei Wu, Jianxiong Shen
Pinealectomy in vertebrates accelerated intervertebral disc degeneration (IDD). However, the potential mechanisms, particularly, melatonin's role is still to be clarified. In this study, for first time, melatonin membrane receptors of MT1 and MT2 were found to be present in the human intervertebral disc tissues and nucleus pulposus (NP) cells, respectively. Melatonin treatment significantly inhibited NP cell proliferation in dose- dependent manner. Accordingly, melatonin down-regulated gene expression of cyclin D1, PCNA, matrix metallopeptidases-3 and -9 and upregulated gene expression of collagen type II alpha 1 chain and aggrecan in NP cells...
July 18, 2017: Journal of Pineal Research
https://www.readbyqxmd.com/read/28718992/melatonin-impedes-tet1-dependent-mglur5-promoter-demethylation-to-relieve-pain
#20
Ming-Chun Hsieh, Yu-Cheng Ho, Cheng-Yuan Lai, Dylan Chou, Hsueh-Hsiao Wang, Gin-Den Chen, Tzer-Bin Lin, Hsien-Yu Peng
Melatonin (N-acetyl-5-methoxytryptamine)/MT2 receptor-dependent epigenetic modification represents a novel pathway in the treatment of neuropathic pain. Because spinal ten-eleven translocation methylcytosine dioxygenase 1 (Tet1)-dependent epigenetic demethylation has recently been linked to pain hypersensitivity, we hypothesized that melatonin/MT2-dependent analgesia involves spinal Tet1-dependent demethylation. Here, we showed that spinal Tet1 gene transfer by intrathecal delivery of Tet1-encoding vectors to naïve rats produced profound and long-lasting nociceptive hypersensitivity...
July 18, 2017: Journal of Pineal Research
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