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https://www.readbyqxmd.com/read/28441579/geldanamycin-inspired-compounds-induce-direct-trans-differentiation-of-human-mesenchymal-stem-cells-to-neurons
#1
Srinivas Jogula, Anand Ram Soorneedi, Jagan Gaddam, Srinivas Chamakuri, Girdhar Singh Deora, Ranjith Kumar Indarapu, Murali Krishna Ramgopal, Subhadra Dravida, Prabhat Arya
Inspired from geldanamycin, the synthesis of a new series of 20-membered macrocyclic compounds is developed. The key features in our design are (i) retention of the fragment having the precise chiral functional groups of geldanamycin at C10, C11, C12 and C14, and (ii) replacement of an olefin moiety with the ester group, and the quinoid sub-structure with the triazole ring. The southern fragment needed for the macrocyclic ring formation was obtained from Evans' syn aldol as the key reaction and with the use of D-mannitol as the cheap source of a chiral starting material...
April 18, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28258270/oral-health-status-and-oral-health-related-quality-of-life-among-hospitalized-and-nonhospitalized-geriatric-patients
#2
Abdulaziz M AlBaker, Fahad F AlBaqami, Tariq M AlHarbi, Mohammad D AlAmri, Jagan K Baskaradoss
INTRODUCTION: The purpose of this study was to compare the oral health status and its effect on the oral health-related quality of life (OHRQoL) of hospitalized and nonhospitalized elderly patients in a single community. The null hypothesis for the study states that there is no difference in the oral health status and OHRQoL between hospitalized and nonhospitalized elderly patients. MATERIALS AND METHODS: This study was conducted at the King Khalid Hospital and College of Dentistry, King Saud University, Riyadh, Kingdom of Saudi Arabia...
March 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28237914/apigenin-attenuates-hippocampal-oxidative-events-inflammation-and-pathological-alterations-in-rats-fed-high-fat-fructose-diet
#3
Jagan Kalivarathan, Sathiya Priya Chandrasekaran, Kalpana Kalaivanan, Vidhya Ramachandran, Anuradha Carani Venkatraman
High calorie diet promotes oxidative stress and chronic low grade inflammation that predispose to brain dysfunction and neurodegeneration. Hippocampus region of the brain has been shown to be particularly sensitive to high calorie diet. We hypothesize that apigenin (API), a flavonoid could attenuate hippocampal derangements induced by high fat-high fructose diet (HFFD). In this study, we investigated the effects of API on oxidative stress and inflammation in the hippocampus, and compared with those of sitagliptin (STG), a standard drug with neuroprotective properties...
February 23, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28223496/ehd2-restrains-dynamics-of-caveolae-by-an-atp-dependent-membrane-bound-open-conformation
#4
Maria Hoernke, Jagan Mohan, Elin Larsson, Jeanette Blomberg, Dana Kahra, Sebastian Westenhoff, Christian Schwieger, Richard Lundmark
The EH-domain-containing protein 2 (EHD2) is a dynamin-related ATPase that confines caveolae to the cell surface by restricting the scission and subsequent endocytosis of these membrane pits. For this, EHD2 is thought to first bind to the membrane, then to oligomerize, and finally to detach, in a stringently regulated mechanistic cycle. It is still unclear how ATP is used in this process and whether membrane binding is coupled to conformational changes in the protein. Here, we show that the regulatory N-terminal residues and the EH domain keep the EHD2 dimer in an autoinhibited conformation in solution...
February 21, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28216887/anti-nociceptive-effect-of-7-methoxy-coumarin-from-eupatorium-triplinerve-vahl-asteraceae
#5
Binoy Varghese Cheriyan, Parimala Kadhirvelu, Jagan Nadipelly, Jaikumar Shanmugasundaram, Vijaykumar Sayeli, Viswanathan Subramanian
AIM: To evaluate the anti-nociceptive activity of 7-methoxy coumarin isolated from ethyl acetate fraction of the alcoholic extract of Eupatorium triplinerve Vahl. MATERIALS AND METHODS: The shade dried leaves of E. triplinerve were extracted with ethyl alcohol and the extract was condensed. This extract was fractionated with n-hexane, ethyl acetate, and n-butanol. The ethyl acetate fraction was subjected to column chromatography which yielded a crystalline compound-A, which was investigated for spectral characteristics...
January 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/28199863/analysis-of-chemopredictive-assay-for-targeting-cancer-stem-cells-in-glioblastoma-patients
#6
Candace M Howard, Jagan Valluri, Anthony Alberico, Terrence Julien, Rida Mazagri, Robert Marsh, Hoyt Alastair, Antonio Cortese, Michael Griswold, Wanmei Wang, Krista Denning, Linda Brown, Pier Paolo Claudio
INTRODUCTION: The prognosis of glioblastoma (GBM) treated with standard-of-care maximal surgical resection and concurrent adjuvant temozolomide (TMZ)/radiotherapy remains very poor (less than 15 months). GBMs have been found to contain a small population of cancer stem cells (CSCs) that contribute to tumor propagation, maintenance, and treatment resistance. The highly invasive nature of high-grade gliomas and their inherent resistance to therapy lead to very high rates of recurrence. For these reasons, not all patients with similar diagnoses respond to the same chemotherapy, schedule, or dose...
April 2017: Translational Oncology
https://www.readbyqxmd.com/read/28174364/evaluation-of-periodontal-changes-adjacent-to-extraction-sites-during-upper-canine-retraction
#7
Azzam Al-Jundi, Basem Al Sabbagh, Jagan K Baskaradoss
INTRODUCTION: There is an intimate relationship between orthodontic therapy and the periodontal changes that occur during tooth movement. MATERIALS AND METHODS: This prospective clinical trial aims at investigating the movement of both the free and attached gingiva, as well as the movement of the alveolar bone in the extraction site of the upper 1st premolars during the retraction of the upper canines. In this study, 17 patients (10 female, 7 male) requiring 1st premolar extraction before orthodontic tooth movement were selected and treated at the Department of Orthodontics in the Faculty of Dentistry in University of Hama, Hama, Syria...
February 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28155025/oral-health-related-quality-of-life-and-periodontal-status-of-pregnant-women
#8
Amrita Geevarghese, Jagan Kumar Baskaradoss, P Sankara Sarma
Aim The purpose of this study was to assess the difference in the oral health related quality of life (OHRQoL) and the oral health status between pregnant and non-pregnant women. Methods This cross-sectional study included 150 pregnant women (mean age 23.8 ± 3.01) and 150 non-pregnant women (mean age 25.2 ± 3.35). Data were collected through a self-administered structured questionnaire, followed by an oral examination. Oral health impact profile-49 (OHIP-49) questionnaire was used to capture the individual's perceived OHRQoL...
February 2, 2017: Maternal and Child Health Journal
https://www.readbyqxmd.com/read/28087304/sleep-and-neurodegeneration-a-critical-appraisal
#9
REVIEW
Jagan A Pillai, James B Leverenz
Sleep abnormalities are clearly recognized as distinct clinical symptom of concern in neurodegenerative disorders. Appropriate management of sleep related symptoms has a positive impact on the quality of life of patients with neurodegenerative disorders. This review provides an overview of mechanisms that are currently being considered that tie sleep with neurodegeneration. It appraises the literature regarding specific sleep changes among common neurodegenerative diseases with a focus on Alzheimer's disease and synucleinopathies (i...
January 10, 2017: Chest
https://www.readbyqxmd.com/read/28045692/radiology-case-of-the-month-acute-onset-of-dizziness-and-paresthesias-in-an-elderly-woman
#10
Mohammed J Shaikh, Jagan D Gupta
61-year-old woman with a past medical history of dementia and Meniere's disease presents with acutely worsening dizziness and headache. The patient additionally complains of left greater than right upper extremity weakness and paresthesias.
November 2016: Journal of the Louisiana State Medical Society: Official Organ of the Louisiana State Medical Society
https://www.readbyqxmd.com/read/27780959/polyphasic-microbial-analysis-of-traditional-korean-jeung-pyun-sourdough-fermented-with-makgeolli
#11
Sae Bom Lim, Jagan Mohan Rao Tingirikari, Ye Won Kwon, Ling Li, Grace E Kim, Nam Soo Han
Jeung-pyun, a fermented rice cake, is prepared by fermenting rice sourdough using makgeolli, a traditional Korean rice wine, in the presence of yeast and lactic acid bacteria (LAB). The goal of this study was to conduct biochemical and microbial analyses of five different rice sourdoughs, each fermented with a different commercial makgeolli, using culture-dependent and culture-independent approaches. All sourdough samples fermented with different makgeolli for 6.5 h showed different profiles in pH, total titratable acidity, organic acid concentration, and microbial growth...
February 28, 2017: Journal of Microbiology and Biotechnology
https://www.readbyqxmd.com/read/27717652/synthesis-and-evaluation-of-the-structural-elements-in-alkylated-tetrahydroisoquinolines-for-binding-to-cns-receptors
#12
Edward Ofori, Xue Y Zhu, Jagan R Etukala, Barbara A Bricker, Seth Y Ablordeppey
Diseases of the CNS are often complex and involve multiple receptor systems and thus, the treatment options for these diseases must focus on targeting the multiple receptors implicated in the various disorders. Schizophrenia and depression are examples of such diseases and their pharmacotherapy thus depends on agents which target multiple receptors including the dopamine, serotonin and even cholinergic receptors at the same time. In our previous campaign to find multi-receptor ligands, we have identified the benzothiazole 1a as an initial lead molecule...
November 15, 2016: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/27696792/immobilization-of-recombinant-pectate-lyase-from-clostridium-thermocellum-atcc-27405-on-magnetic-nanoparticles-for-bioscouring-of-cotton-fabric
#13
Soumyadeep Chakraborty, Tingirikari Jagan Mohan Rao, Arun Goyal
Recombinant pectate lyase from family 1 polysaccharide lyase (PL1B) was immobilized on synthesized magnetic nanoparticles (MNPs) after 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide hydrochloride activation. At 70 mg/mL MNPs 100% binding of 1 mg/mL PL1B was achieved. The immobilized PL1B-MNP displayed activity of 20.3 and 18.2 U/mg against polygalacturonic acid and citrus pectin, respectively, which was higher than the activity of free PL1B, on the same substrates of 17.8 and 16.2 U/mg. The immobilized PL1B-MNP showed 32 fold and 14 fold enhanced thermal stability at 80°C and 90°C, respectively as compared with free PL1B at same temperatures...
October 3, 2016: Biotechnology Progress
https://www.readbyqxmd.com/read/27694890/an-interaction-between-scribble-and-the-nadph-oxidase-complex-controls-m1-macrophage-polarization-and-function
#14
Weiyue Zheng, Masataka Umitsu, Ishaan Jagan, Charles W Tran, Noboru Ishiyama, Michael BeGora, Kiyomi Araki, Pamela S Ohashi, Mitsuhiko Ikura, Senthil K Muthuswamy
The polarity protein Scribble (SCRIB) regulates apical-basal polarity, directional migration and tumour suppression in Drosophila and mammals. Here we report that SCRIB is an important regulator of myeloid cell functions including bacterial infection and inflammation. SCRIB interacts directly with the NADPH oxidase (NOX) complex in a PSD95/Dlg/ZO-1 (PDZ)-domain-dependent manner and is required for NOX-induced reactive oxygen species (ROS) generation in culture and in vivo. On bacterial infection, SCRIB localized to phagosomes in a leucine-rich repeat-dependent manner and promoted ROS production within phagosomes to kill bacteria...
October 3, 2016: Nature Cell Biology
https://www.readbyqxmd.com/read/27635385/vaginal-approach-to-excise-a-rare-paraurethral-leiomyoma
#15
Jagan K Kansal, Mahmoud Mohamed, Ayman Mahdy
Leiomyomas are benign tumors of smooth muscle origin occurring throughout the genitourinary system. While leiomyomas in the uterus are frequently seen, urethral and paraurethral leiomyomas are extremely rare with a hand full of cases in the literature. Typically, periurethral leiomyomas can present with a mass protruding from the urethra originating from the proximal and posterior portion of the urethra. Herein, we present a new case of a paraurethral leiomyoma causing mass effect on the bladder leading to lower urinary tract symptoms (LUTS) with no gross involvement of the urethra...
November 2016: Urology Case Reports
https://www.readbyqxmd.com/read/27623397/impact-of-alzheimer-s-disease-lewy-body-and-vascular-co-pathologies-on-clinical-transition-to-dementia-in-a-national-autopsy-cohort
#16
Jagan A Pillai, Robert S Butler, Aaron Bonner-Jackson, James B Leverenz
AIMS: We examined the effect of vascular or Lewy body co-pathologies in subjects with autopsy-confirmed Alzheimer's disease (AD) on the rate of cognitive and functional decline and transition to dementia. METHODS: In an autopsy sample of prospectively characterized subjects from the National Alzheimer's Coordinating Center database, neuropathology diagnosis was used to define the groups of pure AD (pAD, n = 84), mixed vascular and AD (ADV, n = 54), and mixed Lewy body disease and AD (ADLBD, n = 31)...
2016: Dementia and Geriatric Cognitive Disorders
https://www.readbyqxmd.com/read/27574509/alcohol-and-aldehyde-dehydrogenases-contribute-to-sex-related-differences-in-clearance-of-zolpidem-in-rats
#17
Cody J Peer, Jonathan D Strope, Shaunna Beedie, Ariel M Ley, Alesia Holly, Karim Calis, Ronald Farkas, Jagan Parepally, Angela Men, Emmanuel O Fadiran, Pamela Scott, Marjorie Jenkins, William H Theodore, Tristan M Sissung
OBJECTIVES: The recommended zolpidem starting dose was lowered in females (5 mg vs. 10 mg) since side effects were more frequent and severe than those of males; the mechanism underlying sex differences in pharmacokinetics (PK) is unknown. We hypothesized that such differences were caused by known sex-related variability in alcohol dehydrogenase (ADH) expression. METHODS: Male, female, and castrated male rats were administered 2.6 mg/kg zolpidem, ± disulfiram (ADH/ALDH pathway inhibitor) to compare PK changes induced by sex and gonadal hormones...
2016: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/27551160/formation-and-trapping-of-azafulvene-intermediates-derived-from-manganese-mediated-oxidative-malonate-coupling
#18
Verner A Lofstrand, Bryan S Matsuura, Laura Furst, Jagan M R Narayanam, Corey R J Stephenson
The one-pot, three-component, coupling reaction of indoles/pyrroles, dimethyl malonate, and acetic acid was performed using Mn(III) acetate as an oxidant. In the presence of Mn(OAc)3, indole-2, and indole-3-carbonyl compounds were alkylated at the 3- and 2- positions, respectively, with subsequent oxidation and nucleophilic capture occurring at the newly formed benzylic carbon. In contrast, oxidation of 2- and 3-indole carboxylic acids afforded the corresponding 2-oxindol-3-ylidenes and 3-oxindol-2-ylidenes...
June 30, 2016: Tetrahedron
https://www.readbyqxmd.com/read/27540116/clathrin-light-chains-role-in-selective-endocytosis-influences-antibody-isotype-switching
#19
Shuang Wu, Sophia R Majeed, Timothy M Evans, Marine D Camus, Nicole M L Wong, Yvette Schollmeier, Minjong Park, Jagan R Muppidi, Andrea Reboldi, Peter Parham, Jason G Cyster, Frances M Brodsky
Clathrin, a cytosolic protein composed of heavy and light chain subunits, assembles into a vesicle coat, controlling receptor-mediated endocytosis. To establish clathrin light chain (CLC) function in vivo, we engineered mice lacking CLCa, the major CLC isoform in B lymphocytes, generating animals with CLC-deficient B cells. In CLCa-null mice, the germinal centers have fewer B cells, and they are enriched for IgA-producing cells. This enhanced switch to IgA production in the absence of CLCa was attributable to increased transforming growth factor β receptor 2 (TGFβR2) signaling resulting from defective endocytosis...
August 30, 2016: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/27520596/a-simple-and-fast-approach-for-missing-wedge-invariant-classification-of-subtomograms-extracted-from-filamentous-structures
#20
Jagan Mohan Obbineni, Ryosuke Yamamoto, Takashi Ishikawa
Unsupervised classification of subtomograms extracted from cryo-electron tomograms is often challenging due to the presence of a missing wedge in tomographic data. Here, we propose a simple new approach to classify subtomograms extracted from cryo-electron tomograms of filamentous objects. This unsupervised classification approach uses the 1D projections of the subtomograms for classification and works independently of the orientations of the missing wedge. We applied this approach to subtomograms from eukaryotic cilia and successfully detected heterogeneity including structural polymorphism of dynein molecules...
February 2017: Journal of Structural Biology
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