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https://www.readbyqxmd.com/read/29793180/insulin-is-a-potential-antioxidant-for-diabetes-associated-cognitive-decline-via-regulating-nrf2-dependent-antioxidant-enzymes
#1
Ying Song, Wei Ding, Yun Bei, Yan Xiao, Hai-Da Tong, Li-Bo Wang, Li-Yao Ai
PURPOSE: To investigate the neuroprotective effects of insulin on diabetic encephalopathy and its mechanism. EXPERIMENTAL AND APPROACH: The diabetic model was established by injection of streptozotocin. Behavior examinations were conducted by the Morris water maze. Histopathological alterations were detected by HE staining. ROS, CAT levels and SOD activity were measured using a microplate reader. In vitro, the viability of wild type and knock-down PC12 cells was detected by MTT assay, the morphology of cells was monitored under a microscope...
May 21, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29792924/creation-of-an-acellular-vaginal-matrix-for-potential-vaginal-augmentation-and-cloacal-repair
#2
K V Greco, L G Jones, I Obiri-Yeboa, T Ansari
STUDY OBJECTIVE: our aim was to use porcine vagina to create a vaginal matrix and test its cellular biocompatibility. DESIGN: vagina was harvested from pigs and de-cellularised (DC) using a combination of detergents (Triton x-100 and sodium deoxycholate) and enzymes (DNAse/RNAse). INTERVENTIONS: the presence of cellular material, collagen structural integrity and basement membrane proteins were assessed histologically. To address cytocompatibility, porcine adipose derived-mesenchymal stem cells (AD-MSC) were harvested from abdominal fat together with vaginal epithelial cells (VEC) and seeded onto the mucosal aspect of the vaginal scaffold...
May 21, 2018: Journal of Pediatric and Adolescent Gynecology
https://www.readbyqxmd.com/read/29792730/nivolumab-for-the-treatment-of-colorectal-cancer
#3
Kortnye Maureen Smith, Jayesh Desai
Despite a variety of therapies for advanced metastatic colorectal cancer being available, the outcomes in this malignancy remain sub-optimal. Immunotherapy has been slow to impact the management of this patient group. Checkpoint inhibitors, such as nivolumab, have had disappointing results when used broadly. However, for the subset of patients with microsatellite unstable colorectal cancer the use of checkpoint inhibitors such as nivolumab appears to be transformative, and will provide a new therapeutic option for patient with advanced disease...
May 24, 2018: Expert Review of Anticancer Therapy
https://www.readbyqxmd.com/read/29792594/an-nmdar-positive-and-negative-allosteric-modulator-series-share-a-binding-site-and-are-interconverted-by-methyl-groups
#4
Riley Perszyk, Brooke M Katzman, Hirofumi Kusumoto, Steven A Kell, Matthew P Epplin, Yesim A Tahirovic, Rhonda L Moore, David Menaldino, Pieter Burger, Dennis C Liotta, Stephen F Traynelis
N-methyl-d-aspartate receptors (NMDARs) are an important receptor in the brain and have been implicated in multiple neurological disorders. Many non-selective NMDAR-targeting drugs are poorly tolerated, leading to efforts to target NMDAR subtypes to improve the therapeutic index. We describe here a series of negative allosteric NMDAR modulators with submaximal inhibition at saturating concentrations. Modest changes to the chemical structure interconvert negative and positive modulation. All modulators share the ability to enhance agonist potency and are use-dependent, requiring the binding of both agonists before modulators act with high potency...
May 24, 2018: ELife
https://www.readbyqxmd.com/read/29792535/does-the-poly-adp-ribose-polymerase-inhibitor-veliparib-merit-further-study-for-cancer-associated-weight-loss-observations-and-conclusions-from-60-prospectively-treated-patients
#5
Jason D Doles, Kelly A Hogan, Jennifer O'Connor, Andrea E Wahner Hendrickson, Olivia Huston, Aminah Jatoi
BACKGROUND: More than 80% of patients with advanced cancer develop weight loss. Because preclinical data suggest poly (ADP-ribose) polymerase (PARP) inhibitors can treat this weight loss, this study was undertaken to explore the PARP inhibitor veliparib for this indication. OBJECTIVE: The current study was undertaken to analyze prospectively gathered data on weight in cancer patients on PARP inhibitors. DESIGN/SETTING: The current study relied on a previously published, prospectively conducted phase 1 single institution trial that combined veliparib and topotecan (NCT01012817) as antineoplastic therapy for advanced cancer patients...
May 24, 2018: Journal of Palliative Medicine
https://www.readbyqxmd.com/read/29792311/pedf-regulates-plasticity-of-a-novel-lipid-mtoc-axis-in-prostate-cancer-associated-fibroblasts
#6
Francesca Nardi, Philip Fitchev, Omar E Franco, Jelena Ivanisevic, Adrian Scheibler, Simon W Hayward, Charles B Brendler, Michael A Welte, Susan E Crawford
Prostate tumors make metabolic adaptations to ensure adequate energy and amplify cell cycle regulators such as centrosomes to sustain their proliferative capacity. It is not known whether cancer associated fibroblasts (CAFs) undergo metabolic re-programming. We postulated that CAFs augment lipid storage and amplify centrosomal or non-centrosomal microtubule organizing centers (MTOCs) through a pigment epithelium-derived factor (PEDF)-dependent lipid-MTOC signaling axis. Primary normal human prostate fibroblasts (NFs) and CAFs were evaluated for lipid content, triacylglycerol-regulating proteins, MTOC number and distribution...
May 23, 2018: Journal of Cell Science
https://www.readbyqxmd.com/read/29792129/exploring-intimate-partner-violence-before-during-and-after-pregnancy-in-bangladesh
#7
Md Jahirul Islam, Lisa Broidy, Paul Mazerolle, Kathleen Baird, Nurunnahar Mazumder
Intimate partner violence (IPV) against pregnant or postpartum women is known to have multiple detrimental effects on women and their children. Although results from past research suggest much continuity in trajectories of IPV, it is unclear whether pregnancy interrupts or augments these patterns. Little is known about how physical, sexual, and psychological IPV change and overlap throughout a woman's transition to parenthood. Relying on population-based data, this study examines the prevalence, co-occurring nature, and the changing patterns of physical, sexual, and psychological IPV before, during, and after pregnancy in Bangladesh...
May 1, 2018: Journal of Interpersonal Violence
https://www.readbyqxmd.com/read/29791768/vaccine-immunotherapy-with-arnax-induces-tumor-specific-memory-t-cells-and-durable-anti-tumor-immunity-in-mouse-models
#8
Yohei Takeda, Sumito Yoshida, Ken Takashima, Noriko Ishii-Mugikura, Hiroaki Shime, Tsukasa Seya, Misako Matsumoto
Immunological checkpoint blockade therapies benefit a limited population of cancer patients. We have previously shown that vaccine immunotherapy with TLR3-adjuvant and tumor antigen overcomes anti-programmed death ligand-1 (PD-L1) resistance in mouse tumor models. In this study, four different OVA-expressing tumor cell lines were implanted into syngeneic mice and subjected to antitumor immunotherapy using ARNAX and whole OVA protein. ARNAX is a Toll-like receptor 3-specific agonist that does not activate the MAVS pathway, and thus does not induce systemic inflammation...
May 23, 2018: Cancer Science
https://www.readbyqxmd.com/read/29791695/current-strategies-to-prevent-iatrogenic-ureteral-injury-during-colorectal-surgery
#9
Jonathan Douissard, Frederic Ris, Philippe Morel, Nicolas Christian Buchs
Iatrogenic ureteral injuries are a source of major concern among surgeons performing colorectal procedures. Although they are uncommon, these lesions lead to severe morbidity and long-term functional disabilities, as well as an increase in mortality, hospital stay, and cost. The laparoscopic approach has gained popularity in the field of colorectal surgery and is associated with improved global postoperative outcomes. However, it is also considered to increase the risk of ureteral injury when compared to open surgery, especially during left colonic and rectal resections...
June 1, 2018: Surgical Technology International
https://www.readbyqxmd.com/read/29791343/research-on-a-surface-relief-optical-waveguide-augmented-reality-display-device
#10
Wenjun Zhang, Zhifeng Wang, Jian Xu
Recently, an optical waveguide display device that has light weight, high transparency, and full color has become more and more popular in the wearable augmented reality display application. But existing waveguide display devices are less than satisfactory because of cost, safety, and mass production. Therefore, a type of surface-relief optical waveguide display device is proposed in this paper. First, the geometrical relationship of a waveguide display device structure is confirmed according to the design method of the optical waveguide display device...
May 10, 2018: Applied Optics
https://www.readbyqxmd.com/read/29791156/ab-initio-potential-energy-surfaces-of-c-3-collision-with-proton-and-quantum-dynamics-of-rotational-transition
#11
Sanchit Chhabra, Thogluva Janardhanan Dhilip Kumar
New ab initio potential energy surfaces have been generated for ground state and low-lying excited states of H+ + C3 system using the multi-reference conguration interaction (MRCI) method with Dunning's augmented correlation consistent polarized valence quadruple zeta (aug-cc-pVQZ) basis sets. The ground state and low-lying excited states show avoided crossing indicating non-adiabatic coupling. The anisotropy of the ground state surface has been analyzed by computing the multipolar expansion coefficients with the frozen C-C equilibrium bond length...
May 23, 2018: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/29791037/discrepancies-between-retrospective-and-actual-self-reports-of-peer-victimization-six-years-earlier
#12
Adrienne Nishina, Luis Armando Parra
Retrospective peer victimization reports may be inaccurate. With an ethnically and sexually diverse sample, this study compared adolescents' self-reported peer victimization in 6th grade to their own retrospective reports of 6th-grade victimization when they were in the 12th grade, controlling for past and current adjustment. Overall, 12th graders' retrospective victimization reports correlated with their own earlier 6th-grade self-reports and there was a general tendency to underreport retrospectively. Underreporters were distinguished by worse past 6th-grade adjustment, whereas overreporters were distinguished by worse current (12th-grade) adjustment...
May 23, 2018: Journal of Research on Adolescence: the Official Journal of the Society for Research on Adolescence
https://www.readbyqxmd.com/read/29790749/anti-inflammatory-activity-of-8-hydroxydaidzein-in-lps-stimulated-bv2-microglial-cells-via-activation-of-nrf2-antioxidant-and-attenuation-of-akt-nf-%C3%AE%C2%BAb-inflammatory-signaling-pathways-as-well-as-inhibition-of-cox-2-activity
#13
Pei-Shan Wu, Hsiou-Yu Ding, Jui-Hung Yen, Shu-Fen Chen, Kuan-Han Lee, Ming-Jiuan Wu
It was demonstrated that isoflavones can cross the blood-brain barrier, making them desirable candidate agents for the prevention of neurological symptoms. 8-Hydroxydaidzein (8-OHD, 4',7,8-trihydoxyisoflavone) is an isoflavone found only in fermented soy food. Current results showed that 8-OHD inhibited LPS-stimulated production of nitric oxide (NO) and proinflammatory cytokines, such as tumor necrosis factor (TNF)-α and interleukin (IL)-6, by inhibiting gene expression in BV2 microglial cells. Moreover, 8-OHD markedly quenched reactive oxygen species (ROS) and activated NF-E2-related factor 2 (Nrf2) so as to upregulate expression of Phase II enzymes, including heme oxygenase (HO)-1, NAD(P)H quinone dehydrogenase 1 (NQO1), and the modifier subunit of glutamate cysteine ligase (GCLM)...
May 23, 2018: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29790626/sphingosine-1-phosphate-promotes-the-proliferation-and-attenuates-apoptosis-of-endothelial-progenitor-cells-via-s1pr1-s1pr3-pi3k-akt-pathway
#14
Hang Wang, Hao Huang, Shi-Fang Ding
Sphingosine-1-phosphate (S1P) is a bioactive lysophospholipid that involves in numerous pathophysiological processes. Endothelial progenitor cells (EPCs) play a crucial role in endothelial repair and tumor angiogenesis. The aim of study was to determine the effects of S1P on proliferation and anti-apoptosis of EPCs and their signaling pathways. In this study, we showed that S1P, SEW2871 (a selective S1P receptor 1 (S1PR1) agonist ), or CYM5541 (a selective S1P receptor 3 (S1PR3) allosteric agonist promotes the proliferation and attenuates apoptosis of bone marrow (BM)-derived EPCs...
May 23, 2018: Cell Biology International
https://www.readbyqxmd.com/read/29790392/interleukin-1-receptor-il-1r1-activation-exacerbates-toxin-induced-acute-kidney-injury
#15
Jamie R Privratsky, Jiandong Zhang, Xiaohan Lu, Nathan Rudemiller, Qingqing Wei, Yen-Rei Yu, Michael Dee Gunn, Steven D Crowley
Acute kidney injury (AKI) is a leading cause of morbidity and mortality. Cisplatin is an effective chemotherapeutic agent whose administration is limited by nephrotoxicity. Therapies to prevent cisplatin-induced AKI are lacking. While tumor necrosis factor-α (TNF) plays a key role in the pathogenesis of cisplatin nephrotoxicity, the immune signaling pathways that trigger TNF generation in this context require elucidation. Sterile injury triggers the release and activation of both isoforms of interleukin(IL)-1, IL-1α and IL-1β, and stimulation of the interleukin-1 receptor (IL-1R1) by these ligands engages a pro-inflammatory signaling cascade that induces TNF induction...
May 23, 2018: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/29790360/-current-and-future-pharmacotherapy-of-severe-psychiatric-disorders
#16
Eva Češková
Despite of tremendous development in CNS research, current treatment is suboptimal especially in severe mental disorders. In medicine, there are two main methods of improving the healthcare provided: seeking new treatment procedures and perfecting (optimizing) the existing ones. Optimization of treatment includes not only practical tools such as therapeutic drug monitoring, but also implementation of general trends into the clinical practice. New pharmacological options include drugs aimed at other than monoaminergic systems and old drugs used before the psychopharmacological era...
2018: Casopís Lékar̆ů C̆eských
https://www.readbyqxmd.com/read/29790275/suppressor-of-clathrin-deficiency-scd6-an-emerging-rgg-motif-translation-repressor
#17
REVIEW
Debadrita Roy, Purusharth I Rajyaguru
Translation control plays a key role in variety of cellular processes. Translation initiation factors augment translation, whereas translation repressor proteins inhibit translation. Different repressors act by distinct mechanisms to accomplish the repression process. Although messenger RNAs (mRNAs) can be repressed at various steps of translation, most repressors have been reported to target the initiation step. We focus on one such translation repressor, an Arginine-Glycine-Glycine (RGG)-motif containing protein Scd6...
May 22, 2018: Wiley Interdisciplinary Reviews. RNA
https://www.readbyqxmd.com/read/29790194/the-impact-of-epidural-analgesia-on-the-duration-of-the-second-stage-of-labor
#18
Anat Shmueli, Lina Salman, Sharon Orbach-Zinger, Amir Aviram, Liran Hiersch, Rony Chen, Rinat Gabbay-Benziv
BACKGROUND: We aimed to describe the length of second stage of labor in a contemporary cohort. We calculated the 5th, 50th, and 95th percentiles for second-stage length stratified by parity and epidural analgesia use and evaluated the effect of labor induction and oxytocin augmentation in our cohort. METHODS: We did a retrospective analysis of all live, singleton, term vaginal deliveries in one tertiary hospital. Multivariate linear regression was used to evaluate second-stage duration confounders...
May 22, 2018: Birth
https://www.readbyqxmd.com/read/29790120/changes-in-the-augmentation-index-and-postoperative-orthostatic-intolerance-in-orthopedic-surgery-a-prospective-cohort-study
#19
Stavros G Memtsoudis, Eva E Mörwald, Kara Fields, Crispiana Cozowicz, Nigel E Sharrock, Mathias Opperer, Ottokar Stundner, Angie Zhang, George Go, Thomas Danninger
BACKGROUND: Postoperative orthostatic intolerance (OI) can be a major obstacle to early ambulation and its determinants are poorly understood. We aimed to study postoperative changes in vascular tone and their potential association with OI in various orthopedic surgical settings. METHODS: In this prospective cohort study, 350 patients undergoing total joint arthroplasty under neuraxial anesthesia or spine surgery under general anesthesia were enrolled. We determined the augmentation index (AI) as a measure of vascular tone and studied symptoms of OI using a validated questionnaire at various postoperative time points...
May 22, 2018: Canadian Journal of Anaesthesia, Journal Canadien D'anesthésie
https://www.readbyqxmd.com/read/29790101/medical-student-exposure-to-integrated-behavioral-health
#20
Rebekah J Choi, Renée M Betancourt, Mario P DeMarco, Kent D W Bream
OBJECTIVE: Integrated behavioral health (IBH) allows for effective care delivery for patients with mental health and behavioral health disorders in primary care settings. This study assesses the state of exposure current medical students have to the IBH model in family medicine clerkships, in order to augment the readiness of students to participate in IBH as developing professionals. METHODS: Clerkship directors at US and Canadian medical schools with a required family medicine run course (n = 141) were asked to estimate the percentage of students exposed to IBH in their clerkships, as part of the Council of Academic Family Medicine Educational Research Alliance (CERA) 2016 survey...
May 22, 2018: Academic Psychiatry
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