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https://www.readbyqxmd.com/read/27933754/tandem-thorpe-reaction-palladium-catalyzed-asymmetric-allylic-alkylation-access-to-chiral-%C3%AE-enaminonitriles-with-excellent-enantioselectivity
#1
Xue Long Hou, Da-Chang Bai, Xiu-Yan Liu, Hao Li, Chang-Hua Ding
A new type of nucleophile, 3-imino nitrile carbanion generated in-situ by Thorpe reaction of acetonitrile with base, was developed successfully and applied in Pd-catalyzed asymmetric allylic alkylation with mono substituted allyl reagents under Pd/SIOCPhox catalysis, affording β-enaminonitrile products in high yields with excellent regio- and enantioselectivities.
December 8, 2016: Chemistry, An Asian Journal
https://www.readbyqxmd.com/read/27933720/autogenous-bone-grafting-for-treatment-of-osseous-defect-after-impacted-mandibular-third-molar-extraction-a-randomized-controlled-trial
#2
Jing Ge, Chi Yang, Jiawei Zheng, Yingkai Hu
BACKGROUND: Extraction of impacted mandibular third molar (M3) has been cited as causing osseous defect at the distal aspect of the adjacent second molar (M2). PURPOSE: This randomized controlled trial was aimed to evaluate the effect of autogenous bone grafting in situ for regeneration of periodontal osseous defect distal to the M2 compared with non-grafting after impacted M3 removal. MATERIALS AND METHODS: A total of 60 sites in 51 adult patients were enrolled and randomly assigned to the control group or the test group...
December 8, 2016: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/27933496/green-synthesis-of-pd-walnut-shell-nanocomposite-using-equisetum-arvense-l-leaf-extract-and-its-application-for-the-reduction-of-4-nitrophenol-and-organic-dyes-in-a-very-short-time
#3
Maryam Bordbar, Nafiseh Mortazavimanesh
Palladium nanoparticles (PdNPs) have been immobilized on the surface of walnut shell powder using Equisetum arvense L. leaf extract as reducing and stabilizing agents in this work. FT-IR spectroscopy, UV-Vis spectroscopy, photoluminescence spectroscopy, X-ray diffraction (XRD) pattern, field emission scanning electron microscopy (FESEM), energy dispersive X-ray spectroscopy (EDS), and transmission electron microscopy (TEM) have been used in the characterization of the nanocomposites thus prepared. High catalytic activity was shown by these nanocomposites in the reduction of different dyes...
December 8, 2016: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/27933492/comparative-analysis-of-speech-impairment-and-upper-limb-motor-dysfunction-in-parkinson-s-disease
#4
Jan Rusz, Tereza Tykalová, Radim Krupička, Kateřina Zárubová, Michal Novotný, Robert Jech, Zoltán Szabó, Evžen Růžička
It is currently unknown whether speech and limb motor effectors in Parkinson's disease (PD) are controlled by similar underlying brain processes. Based on computerized objective analysis, the aim of this study was to evaluate potential correlation between speech and mechanical tests of upper limb motor function. Speech and upper limb motor tests were performed in 22 PD patients and 22 healthy controls. Quantitative acoustic analyses of eight key speech dimensions of hypokinetic dysarthria, including quality of voice, sequential motion rates, consonant articulation, vowel articulation, average loudness, loudness variability, pitch variability, and number of pauses, were performed...
December 8, 2016: Journal of Neural Transmission
https://www.readbyqxmd.com/read/27933484/dna-as-a-target-for-anticancer-phen-imidazole-pd-ii-complexes
#5
Maryam Heydari, Mahboube Eslami Moghadam, AliAkbar Tarlani, Hossein Farhangian
Imidazole ring is a known structure in many natural or synthetic drug molecules and its metal complexes can interact with DNA and do the cleavage. Hence, to study the influence of the structure and size of the ligand on biological behavior of metal complexes, two water-soluble Pd(II) complexes of phen and FIP ligands (where phen is 1,10-phenanthroline and FIP is 2-(Furan-2-yl)-1H-Imidazo[4,5-f][1, 10]phenanthroline) with the formula of [Pd(phen)(FIP)](NO3)2 and [Pd(FIP)2]Cl2, that were activated against chronic myelogenous leukemia cell line, K562, were selected...
December 8, 2016: Applied Biochemistry and Biotechnology
https://www.readbyqxmd.com/read/27933445/correlation-of-crevicular-fluid-and-serum-levels-of-retinol-binding-protein-4-and-leptin-in-chronic-periodontitis-and-obesity
#6
Dharmendra Kanoriya, A R Pradeep, A Mallika, Sandeep Singhal, Vibhuti Garg
OBJECTIVE: Retinol-binding protein 4 (RBP4) and leptin are both adipokines and involved in the pathophysiology of different vascular and inflammatory diseases and selectively elevated in patients with obesity. The aim of the present study was to determine and correlate the levels of RBP4 and leptin in gingival crevicular fluid (GCF) and serum in patients with chronic periodontitis (CP) and obesity. MATERIALS AND METHODS: A total of 70 patients with age group 25 to 45 years were divided into four groups based on gingival index (GI), probing depth (PD), clinical attachment level (CAL), body mass index (BMI) and radiographic evidence of bone loss...
December 8, 2016: Clinical Oral Investigations
https://www.readbyqxmd.com/read/27933309/impact-of-age-and-vector-construct-on-striatal-and-nigral-transgene-expression
#7
Nicole K Polinski, Fredric P Manfredsson, Matthew J Benskey, D Luke Fischer, Christopher J Kemp, Kathy Steece-Collier, Ivette M Sandoval, Katrina L Paumier, Caryl E Sortwell
Therapeutic protein delivery using viral vectors has shown promise in preclinical models of Parkinson's disease (PD) but clinical trial success remains elusive. This may partially be due to a failure to include advanced age as a covariate despite aging being the primary risk factor for PD. We investigated transgene expression following intracerebral injections of recombinant adeno-associated virus pseudotypes 2/2 (rAAV2/2), 2/5 (rAAV2/5), 2/9 (rAAV2/9), and lentivirus (LV) expressing green fluorescent protein (GFP) in aged versus young adult rats...
2016: Molecular Therapy. Methods & Clinical Development
https://www.readbyqxmd.com/read/27933212/spontaneous-destructive-periodontitis-and-skeletal-bone-damage-in-transgenic-mice-carrying-a-human-shared-epitope-coding-hla-drb1-allele
#8
Prashasnika Gehlot, Sarah L Volk, Hector F Rios, Karl J Jepsen, Joseph Holoshitz
OBJECTIVE: Shared epitope (SE)-coding DRB1 alleles are associated with bone erosion in several diseases, including rheumatoid arthritis (RA) and periodontal disease (PD), but the underlying mechanism is unknown. We have recently identified the SE as an osteoclast-activating ligand. To better understand the biological effects of the SE in vivo, here we sought to determine whether it can facilitate spontaneous bone damage in naïve mice. METHODS: 3-month old naïve transgenic mice that carry the human SE-coding allele DRB1*04:01, or a SE-negative allele DRB1*04:02 were studied...
2016: RMD Open
https://www.readbyqxmd.com/read/27933060/regulators-of-tfh-cell-differentiation
#9
REVIEW
Gajendra M Jogdand, Suchitra Mohanty, Satish Devadas
The follicular helper T (Tfh) cells help is critical for activation of B cells, antibody class switching, and germinal center (GC) formation. The Tfh cells are characterized by the expression of CXC chemokine receptor 5 (CXCR5), ICOS, programed death 1 (PD-1), B cell lymphoma 6 (BCL-6), and IL-21. They are involved in clearing infections and are adversely linked with autoimmune diseases and also have a role in viral replication as well as clearance. On the one hand, Tfh cells are generated from naive CD4(+) T cells with sequential steps involving cytokine signaling (IL-21, IL-6, IL-12, activin A), migration, and positioning in the GC by CXCR5, surface receptors (ICOS/ICOSL, signaling lymphocyte activation molecule-associated protein/signaling lymphocyte activation molecule) as well as transcription factor (BCL-6, c-Maf, and signal transducer and activator of transcription 3) signaling and repressor miR155...
2016: Frontiers in Immunology
https://www.readbyqxmd.com/read/27932974/patterns-of-longitudinal-neural-activity-linked-to-different-cognitive-profiles-in-parkinson-s-disease
#10
Atsuko Nagano-Saito, Mohamed S Al-Azzawi, Alexandru Hanganu, Clotilde Degroot, Béatriz Mejia-Constain, Christophe Bedetti, Anne-Louise Lafontaine, Valérie Soland, Sylvain Chouinard, Oury Monchi
Mild cognitive impairment in Parkinson's disease (PD) has been linked with functional brain changes. Previously, using functional magnetic resonance imaging (fMRI), we reported reduced cortico-striatal activity in patients with PD who also had mild cognitive impairment (MCI) vs. those who did not (non-MCI). We followed up these patients to investigate the longitudinal effect on the neural activity. Twenty-four non-demented patients with Parkinson's disease (non-MCI: 12, MCI: 12) were included in the study. Each participant underwent two fMRIs while performing the Wisconsin Card Sorting Task 20 months apart...
2016: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/27932943/vacuolar-protein-sorting-genes-in-parkinson-s-disease-a-re-appraisal-of-mutations-detection-rate-and-neurobiology-of-disease
#11
REVIEW
Stefano Gambardella, Francesca Biagioni, Rosangela Ferese, Carla L Busceti, Alessandro Frati, Giuseppe Novelli, Stefano Ruggieri, Francesco Fornai
Mammalian retromers play a critical role in protein trans-membrane sorting from endosome to the trans-Golgi network (TGN). Recently, retromer alterations have been related to the onset of Parkinson's Disease (PD) since the variant p.Asp620Asn in VPS35 (Vacuolar Protein Sorting 35) was identified as a cause of late onset PD. This variant causes a primary defect in endosomal trafficking and retromers formation. Other mutations in VPS genes have been reported in both sporadic and familial PD. These mutations are less defined...
2016: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/27932887/role-of-anuria-in-the-relationship-between-indoxyl-sulfate-and-anemia-in-peritoneal-dialysis-patients
#12
Jeng-Yi Huang, Ching-Wei Hsu, Chih-Wei Yang, Cheng-Chieh Hung, Wen-Hung Huang
BACKGROUND: Experimental evidence suggests that indoxyl sulfate (IS) is associated with chronic kidney disease-related anemia. However, clinical studies are limited, and few have explored the potential confounding effect of anuria. This study, thus, evaluated the association between IS and anemia in both non-anuric and anuric peritoneal dialysis (PD) patients. METHODS: This cross-sectional and observational study included 165 chronic PD patients aged 19-84 years...
2016: Therapeutics and Clinical Risk Management
https://www.readbyqxmd.com/read/27932866/effect-of-peritoneal-dialysis-fluid-containing-osmo-metabolic-agents-on-human-endothelial-cells
#13
Mario Bonomini, Sara Di Silvestre, Pamela Di Tomo, Natalia Di Pietro, Domitilla Mandatori, Lorenzo Di Liberato, Vittorio Sirolli, Francesco Chiarelli, Cesare Indiveri, Assunta Pandolfi, Arduino Arduini
BACKGROUND: The use of glucose as the only osmotic agent in peritoneal dialysis (PD) solutions (PDSs) is believed to exert local (peritoneal) and systemic detrimental actions, particularly in diabetic PD patients. To improve peritoneal biocompatibility, we have developed more biocompatible PDSs containing xylitol and carnitine along with significantly less amounts of glucose and have tested them in cultured Human Vein Endothelial Cells (HUVECs) obtained from the umbilical cords of healthy (C) and gestational diabetic (GD) mothers...
2016: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/27932672/a-led-based-phosphorimeter-for-measurement-of-microcirculatory-oxygen-pressure
#14
Philippe Guerci, Yasin Ince, Paul Heeman, Dirk J Faber, Bulent Ergin, Can Ince
Quantitative measurements of microcirculatory and tissue oxygenation are of prime importance in experimental research. Non-invasive time-resolved quenching of phosphorescence has given further insight into the fundamental mechanisms of oxygen transport to healthy tissues and in models of disease. Phosphorimeters are devices dedicated to the study of phosphorescence quenching. The experimental applications of phosphorimeters range from measuring a specific oxygen partial pressure (PO2) in cellular organelles such as mitochondria, finding values of PO2 distributed over an organ or capillaries, to measuring microcirculatory PO2 changes simultaneously in several organ systems...
December 8, 2016: Journal of Applied Physiology
https://www.readbyqxmd.com/read/27932443/pd-l1-blockade-enhances-response-of-pancreatic-ductal-adenocarcinoma-to-radiotherapy
#15
Abul Azad, Su Yin Lim, Zenobia D'Costa, Keaton Jones, Angela Diana, Owen J Sansom, Philipp Kruger, Stanley Liu, W Gillies McKenna, Omer Dushek, Ruth J Muschel, Emmanouil Fokas
Pancreatic ductal adenocarcinoma (PDAC) is considered a non-immunogenic tumor, and immune checkpoint inhibitor monotherapy lacks efficacy in this disease. Radiotherapy (RT) can stimulate the immune system. Here, we show that treatment of KPC and Pan02 murine PDAC cells with RT and gemcitabine upregulated PD-L1 expression in a JAK/Stat1-dependent manner. In vitro, PD-L1 inhibition did not alter radio- and chemosensitivity. In vivo, addition of anti-PD-L1 to high (12, 5 × 3, 20 Gy) but not low (6, 5 × 2 Gy) RT doses significantly improved tumor response in KPC and Pan02 allografts...
December 8, 2016: EMBO Molecular Medicine
https://www.readbyqxmd.com/read/27932411/mod-4023-a-long-acting-carboxy-terminal-peptide-ctp-modified-human-growth-hormone-results-of-a-phase-2-study-in-growth-hormone-deficient-adults
#16
Christian J Strasburger, Peter Vanuga, Juraj Payer, Marija Pfeifer, Vera Popović, Laszlo Bajnok, Miklós I Góth, Věra Olšovská, Ľudmila Trejbalová, Janos Vadasz, Eyal Fima, Ronit Koren, Leanne Amitzi, Martin Bidlingmaier, Gili Hart, Beverly M K Biller
OBJECTIVE: Growth hormone (GH) replacement therapy currently requires daily injections, which may cause distress and low compliance. C-terminal peptide (CTP)-modified growth hormone (MOD-4023) is being developed as a once-weekly dosing regimen in patients with GH deficiency (GHD). This study's objective is to evaluate the safety, pharmacokinetics (PK), pharmacodynamics (PD) and efficacy of MOD-4023 administered once weekly in GHD adults. DESIGN: 54 adults with GHD currently treated with daily GH were normalized and randomized into 4 weekly dosing cohorts of MOD-4023 at 18...
December 8, 2016: European Journal of Endocrinology
https://www.readbyqxmd.com/read/27932277/detection-of-subclinical-ultrasound-enthesopathy-and-nail-disease-in-patients-at-risk-of-psoriatic-arthritis
#17
Marie Acquitter, Laurent Misery, Alain Saraux, Luc Bressollette, Sandrine Jousse-Joulin
OBJECTIVES: To detect subclinical entheses and nail abnormalities using gray-scale (GS) and power Doppler ultrasonography (PDUS) between patients with nail psoriasis and those with inverse and scalp psoriasis. METHODS: In this prospective monocentric study, patients with nail, inverse and scalp psoriasis, without psoriatic arthritis or systemic treatment, were included. Clinical evaluation and ultrasonographic assessment of 14 entheses and 12 nails were done by a dermatologist (clinical assessment) and a rheumatologist (ultrasonographic assessment)...
December 5, 2016: Joint, Bone, Spine: Revue du Rhumatisme
https://www.readbyqxmd.com/read/27932067/nivolumab-plus-ipilimumab-as-first-line-treatment-for-advanced-non-small-cell-lung-cancer-checkmate-012-results-of-an-open-label-phase-1-multicohort-study
#18
Matthew D Hellmann, Naiyer A Rizvi, Jonathan W Goldman, Scott N Gettinger, Hossein Borghaei, Julie R Brahmer, Neal E Ready, David E Gerber, Laura Q Chow, Rosalyn A Juergens, Frances A Shepherd, Scott A Laurie, William J Geese, Shruti Agrawal, Tina C Young, Xuemei Li, Scott J Antonia
BACKGROUND: Nivolumab has shown improved survival in the treatment of advanced non-small-cell lung cancer (NSCLC) previously treated with chemotherapy. We assessed the safety and activity of combination nivolumab plus ipilimumab as first-line therapy for NSCLC. METHODS: The open-label, phase 1, multicohort study (CheckMate 012) cohorts reported here were enrolled at eight US academic centres. Eligible patients were aged 18 years or older with histologically or cytologically confirmed recurrent stage IIIb or stage IV, chemotherapy-naive NSCLC...
December 2, 2016: Lancet Oncology
https://www.readbyqxmd.com/read/27931835/management-of-patients-with-recurrent-advanced-cervical-cancer-beyond-first-line-platinum-regimens-where-do-we-stand-a-literature-review
#19
REVIEW
Stergios Boussios, Esmeralda Seraj, George Zarkavelis, Dimitrios Petrakis, Aristomenes Kollas, Aikaterini Kafantari, Abraam Assi, Konstantina Tatsi, Nicholas Pavlidis, George Pentheroudakis
BACKGROUND: Cervical cancer is the fourth most common cancer affecting women worldwide. Despite advances in screening and human papillomavirus (HPV) vaccination, a significant number of women present with or develop advanced disease. Palliative platinum-based chemotherapy (CT) is the standard first-line treatment for metastatic/recurrent cervical cancer. The prognosis remains poor and effective second line options are urgently needed. METHODS: We searched the English-language medical literature as well as relevant guideline databases, published from January 1981 to December 2015 and identified publications related to cervical cancer and its therapies...
December 2016: Critical Reviews in Oncology/hematology
https://www.readbyqxmd.com/read/27931637/complications-of-ercp
#20
REVIEW
Rupjyoti Talukdar
Even though considered safe, endoscopic retrograde cholangiopancreatography (ERCP) is among the endoscopic procedures associated with the highest rate of complications. Post ERCP pancreatitis (PEP) is the most common complication of ERCP. Several independent risk factors have been associated with PEP. Prophylactic PD stenting has been shown to be highly effective in preventing PEP. More recent studies have suggested that NSAIDs, especially rectal indomethacin, could by itself be effective in preventing PEP...
October 2016: Best Practice & Research. Clinical Gastroenterology
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