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https://www.readbyqxmd.com/read/27930301/reprogramming-cell-fate-with-a-genome-scale-library-of-artificial-transcription-factors
#1
Asuka Eguchi, Matthew J Wleklinski, Mackenzie C Spurgat, Evan A Heiderscheit, Anna S Kropornicka, Catherine K Vu, Devesh Bhimsaria, Scott A Swanson, Ron Stewart, Parameswaran Ramanathan, Timothy J Kamp, Igor Slukvin, James A Thomson, James R Dutton, Aseem Z Ansari
Artificial transcription factors (ATFs) are precision-tailored molecules designed to bind DNA and regulate transcription in a preprogrammed manner. Libraries of ATFs enable the high-throughput screening of gene networks that trigger cell fate decisions or phenotypic changes. We developed a genome-scale library of ATFs that display an engineered interaction domain (ID) to enable cooperative assembly and synergistic gene expression at targeted sites. We used this ATF library to screen for key regulators of the pluripotency network and discovered three combinations of ATFs capable of inducing pluripotency without exogenous expression of Oct4 (POU domain, class 5, TF 1)...
December 5, 2016: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/27930280/development-of-electronic-medical-record-based-rounds-report-results-in-improved-resident-efficiency-more-time-for-direct-patient-care-and-education-and-less-resident-duty-hour-violations
#2
Phillip B Ham, Toby Anderton, Ryan Gallaher, Mike Hyrman, Erika Simmerman, Annamalai Ramanathan, David Fallaw, Steven Holsten, Charles Gordon Howell
Surgeons frequently report frustration and loss of efficiency with electronic medical record (EMR) systems. Together, surgery residents and a programmer at Augusta University created a rounds report (RR) summarizing 24 hours of vitals, intake/output, labs, and other values for each inpatient that were previously transcribed by hand. The objective of this study was to evaluate the RRs effect on surgery residents. Surgery residents were queried to assess the RRs impact. Outcome measures were time spent preparing for rounds, direct patient care time, educational activity time, rates of incorrect/incomplete data on rounds, and rate of duty hour violations...
September 2016: American Surgeon
https://www.readbyqxmd.com/read/27923871/serum-lipid-profile-changes-predict-neurodegeneration-in-interferon-b1a-treated-multiple-sclerosis-patients
#3
Tomas Uher, Kelly Fellows, Dana Horakova, Robert Zivadinov, Manuela Vaneckova, Lukas Sobisek, Michaela Tyblova, Zdenek Seidl, Jan Krasensky, Niels Bergsland, Bianca Weinstock-Guttman, Eva Havrdova, Murali Ramanathan
PURPOSE: To determine whether changes in cholesterol profiles after IFN-beta1a treatment initiation following the first demyelinating event suggestive of MS are associated with clinical and MRI outcomes over 4 years. METHODS: 131 patients (age: 27.9 +/- 7.8 years, 63% female) with serial 3-monthly clinical and 12-monthly MRI follow-up over 4 years were investigated. Serum cholesterol profiles including total cholesterol (TC), high-density lipoprotein cholesterol (HDL-C) and low-density lipoprotein cholesterol (LDL-C) were obtained at baseline, 1 month, 3 months, and every 6 months thereafter...
December 6, 2016: Journal of Lipid Research
https://www.readbyqxmd.com/read/27920649/hepatoid-carcinoma-of-the-pancreas-case-report-next-generation-tumor-profiling-and-literature-review
#4
James M Chang, Nitin N Katariya, Dora M Lam-Himlin, Danielle J Haakinson, Ramesh K Ramanathan, Thorvardur R Halfdanarson, Mitesh J Borad, Rahul Pannala, Douglas Faigel, Adyr A Moss, Amit K Mathur
Fewer than 25 cases of hepatoid carcinoma of the pancreas have been reported in the literature. We present a case in a 61-year-old male with a remote history of Hodgkin's lymphoma and gastric neuroendocrine cell hyperplasia. On surveillance endoscopic ultrasound, an 8 × 5 mm cystic lesion was seen in the tail of the pancreas. MRI showed a focal pancreatic duct cut-off with mild ductal dilation. Fine needle aspiration was performed, which was concerning for acinar cell carcinoma. The patient underwent distal pancreatectomy and recovered uneventfully...
September 2016: Case Reports in Gastroenterology
https://www.readbyqxmd.com/read/27919210/three-dimensional-modelling-of-the-voltage-gated-sodium-ion-channel-from-anopheles-gambiae-reveals-spatial-clustering-of-evolutionarily-conserved-acidic-residues-at-the-extracellular-sites
#5
Rithvik S Vinekar, Ramanathan Sowdhamini
The eukaryotic voltage-gated sodium channel(e-Nav) is a large asymmetric transmembrane protein with important functions concerning neurological function. No structure has been resolved at high resolution for this protein. A homology model of the transmembrane and extracellular regions of an Anopheles gambiae para-like channel with emphasis on the pore entrance has been constructed, based upon the templates provided by a prokaryotic sodium channel and a potassium two-pore channel. The latter provides a template for the extracellular regions, which are located above the entrance to the pore, which is likely to open at a side of a dome formed by these loops...
December 5, 2016: Current Neuropharmacology
https://www.readbyqxmd.com/read/27916350/murine-model-of-long-term-obstructive-jaundice
#6
Hiroaki Aoki, Masayo Aoki, Jing Yang, Eriko Katsuta, Partha Mukhopadhyay, Rajesh Ramanathan, Ingrid A Woelfel, Xuan Wang, Sarah Spiegel, Huiping Zhou, Kazuaki Takabe
BACKGROUND: With the recent emergence of conjugated bile acids as signaling molecules in cancer, a murine model of obstructive jaundice by cholestasis with long-term survival is in need. Here, we investigated the characteristics of three murine models of obstructive jaundice. METHODS: C57BL/6J mice were used for total ligation of the common bile duct (tCL), partial common bile duct ligation (pCL), and ligation of left and median hepatic bile duct with gallbladder removal (LMHL) models...
November 2016: Journal of Surgical Research
https://www.readbyqxmd.com/read/27916205/efficacy-and-safety-of-transdermal-testosterone-in-postmenopausal-women-with-hypoactive-sexual-desire-disorder-a-systematic-review-and-meta-analysis
#7
Chiara Achilli, Jyotsna Pundir, Parimalam Ramanathan, Luca Sabatini, Haitham Hamoda, Nick Panay
OBJECTIVE: To systematically review and summarize the existing evidence related to the efficacy and safety of transdermal T in postmenopausal women for the treatment of hypoactive sexual desire disorder (HSDD). DESIGN: Systematic reviews and meta-analysis. SETTING: Not applicable. PATIENT(S): Seven randomized controlled trials enrolled 3,035 participants; 1,350 women were randomized to treatment with T patch, and 1,379 women were randomized to placebo...
December 1, 2016: Fertility and Sterility
https://www.readbyqxmd.com/read/27908295/dopamine-2-receptor-extracellular-n-terminus-regulates-receptor-surface-availability-and-is-the-target-of-human-pathogenic-antibodies-from-children-with-movement-and-psychiatric-disorders
#8
Nese Sinmaz, Fiona Tea, Deepti Pilli, Alicia Zou, Mazen Amatoury, Tina Nguyen, Vera Merheb, Sudarshini Ramanathan, Sandra T Cooper, Russell C Dale, Fabienne Brilot
Anti-Dopamine-2 receptor (D2R) antibodies have been recently identified in a subgroup of children with autoimmune movement and psychiatric disorders, however the epitope(s) and mechanism of pathogenicity remain unknown. Here we report a major biological role for D2R extracellular N-terminus as a regulator of receptor surface availability, and as a major epitope targeted and impaired in brain autoimmunity. In transfected human cells, purified anti-D2R antibody from patients specifically and significantly reduced human D2R surface levels...
December 1, 2016: Acta Neuropathologica Communications
https://www.readbyqxmd.com/read/27898916/effects-of-aging-on-the-fundamental-color-chemistry-of-dark-cutting-beef
#9
A R English, K M Wills, B N Harsh, G G Mafi, D L VanOverbeke, R Ramanathan
The objective of the current study was to evaluate the effects of aging on myoglobin chemistry of dark-cutting beef. Ten USDA Choice (mean pH = 5.6; normal pH beef) and 10 no-roll dark cutter (mean pH = 6.4) strip loins were obtained from a commercial packing plant within 3 d of harvest. Loins were cut into 4 sections, vacuum packaged, randomly assigned to 0-, 21-, 42-, and 62-d aging at 2°C in the dark. Following aging, loin sections were cut into 2.5-cm-thick steaks and were used to determine bloom development, oxygen consumption (OC), metmyoglobin reducing activity (MRA), and lipid oxidation...
September 2016: Journal of Animal Science
https://www.readbyqxmd.com/read/27893551/mid-face-degloving-an-alternate-approach-to-extended-osteotomies-of-the-midface
#10
Anantanarayanan Parameswaran, Naveen Kumar Jayakumar, Manikandhan Ramanathan, Hermann F Sailer
Extended osteotomies for mid-face advancement require generous exposure of the anterior maxilla, nasal bones, infraorbital rims, orbital floor, zygoma, and the anterior third of the zygomatic arches. This cannot be obtained with an exclusive transoral approach. Hence, the surgeon is usually compelled to utilize supplemental cutaneous incisions that are a compromise on the purpose behind a cosmetic surgery. In order to alleviate the need for such compromise, the authors advocate the mid face degloving approach for extended osteotomies at Lefort II and Lefort III levels...
November 23, 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27885584/wt1-and-nphs2-gene-mutation-analysis-and-clinical-management-of-steroid-resistant-nephrotic-syndrome
#11
Aravind Selvin Kumar Ramanathan, Murali Vijayan, Srilakshmi Rajagopal, Padmaraj Rajendiran, Prabha Senguttuvan
Nephrotic syndrome (NS) is a kidney disease predominantly present in children with idiopathic condition; final stage of the disease progresses into end-stage renal disease. Generally, NS is treated using standard steroid therapy, however; most of the children are steroid sensitive and about 15-20% are non-responders (SRNS). Non-responsiveness of these children would be a risk with the possibility of mutational changes in podocyte genes (NPHS1, NPHS2, WT1, PLCE1). The mutation in podocyte genes is associated with SRNS...
November 25, 2016: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/27878198/one-pot-synthesis-of-%C3%AE-ketoamides-from-ethylarenes-and-amines-a-metal-free-difunctionalization-strategy
#12
Mani Ramanathan, Chun-Kai Kuo, Shiuh-Tzung Liu
One-pot and metal free synthesis of α-ketoamides has been described through in situ generation of aryl ketones from easily available ethylarenes followed by amidation with various amines. This multiple oxidation protocol involves catalytic I2-pyridine-TBHP (t-butyl hydroperoxide) mediated oxidative benzylic carbonylation and sequential NaI-TBHP mediated oxidative amidation without using any solvent.
November 23, 2016: Organic & Biomolecular Chemistry
https://www.readbyqxmd.com/read/27866965/proton-pump-inhibitor-use-and-risk-of-hip-fracture-in-kidney-transplant-recipients
#13
Colin R Lenihan, Sumi Sukumaran Nair, Chandan Vangala, Venkat Ramanathan, Maria E Montez-Rath, Wolfgang C Winkelmayer
BACKGROUND: Posttransplantation bone disease is a significant problem, with few well-evidenced therapeutic options. Proton pump inhibitors (PPIs) are associated with hip fracture in the general population and are widely prescribed for kidney transplant recipients. STUDY DESIGN: A case-control study. SETTING & PARTICIPANTS: From the US Renal Data System, we identified from diagnoses and procedures 231 kidney transplant recipients with a first hip fracture...
November 17, 2016: American Journal of Kidney Diseases: the Official Journal of the National Kidney Foundation
https://www.readbyqxmd.com/read/27865210/exophytic-verrucous-hyperplasia-of-the-oral-cavity-%C3%A2-application-of-standardized-criteria-for-diagnosis-from-a-consensus-report
#14
Binti Zain Rosnah, George Kallarakkal Thomas, Ramanathan Anand, Kim Jin, Tilakaratne Wm, Takata Takashi, Warnakulasuriya Saman, Kumar Hazarey Vinay, Rich Alison, Mohd Hussaini Haizal, Jalil Ajura
Verruco-papillary lesions (VPLs) of the oral cavity described in the literature involve a spectrum of conditions including squamous papilloma, verruca vulgaris, focal epithelial hyperplasia, condyloma, proliferative verrucous leukoplakia and verrucous carcinoma. A majority of the VPLs are slow growing, benign in nature and have a viral aetiology. Virus associated benign mucosal outgrowths are not too difficult to diagnose either clinically or by microscopy. Apart from virus-associated lesions, VPLs harboring malignant potential or behaviour such as verrucous carcinoma, proliferative verrucous leukoplakia, oral verrucous hyperplasia (OVH), oral papillary squamous cell carcinoma (PSCC) and oral conventional squamous cell carcinoma with papillary features (CSCC) need to be further clarified for better understanding of their predictable biologic behavior and appropriate treatment...
January 9, 2016: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/27865126/crossing-the-canal-looking-beyond-hernias-spectrum-of-common-uncommon-and-atypical-pathologies-in-the-inguinal-canal
#15
REVIEW
Subramaniyan Ramanathan, Yegu Palaniappan, Adnan Sheikh, John Ryan, Ania Kielar
Inguinal canal can have diverse range of pathologies due to its complex anatomy and multiple different contents in the males and females. Imaging plays a dominant role in the appropriate diagnosis and management as inguinal pathologies have fairly similar clinical presentation with pain and swelling. Various pathologies in the inguinal region include congenital, infectious/inflammatory, vascular, neoplastic and iatrogenic. This paper gives an overview of the role of various modalities like Ultrasound, CT and MRI in the evaluation of inguinal pathologies...
November 5, 2016: Clinical Imaging
https://www.readbyqxmd.com/read/27864798/pharmacokinetic-drug-interactions-with-panax-ginseng
#16
REVIEW
Meenakshi R Ramanathan, Scott R Penzak
Panax ginseng is widely used as an adaptogen throughout the world. The major active constituents of P. ginseng are ginsenosides. Most naturally occurring ginsenosides are deglycosylated by colonic bacteria to intestinal metabolites. Ginsenosides along with these metabolites are widely accepted as being responsible for the pharmacologic activity and drug interaction potential of ginseng. Numerous preclinical studies have assessed the influence of various ginseng components on cytochrome P450 (CYP), glucuronidation, and drug transport activity...
November 18, 2016: European Journal of Drug Metabolism and Pharmacokinetics
https://www.readbyqxmd.com/read/27864161/maintenance-versus-induction-therapy-choice-on-outcomes-after-autologous-transplantation-for-multiple-myeloma
#17
Robert F Cornell, Anita D'Souza, Adetola A Kassim, Luciano J Costa, Racquel D Innis-Shelton, Mei-Jie Zhang, Jiaxing Huang, Muneer Abidi, Jack Aiello, Gorgun Akpek, Asad Bashey, Qaiser Bashir, Jan Cerny, Raymond Comenzo, Miguel Angel Diaz, César Freytes, Robert Peter Gale, Siddhartha Ganguly, Mehdi Hamadani, Shahrukh Hashmi, Leona Holmberg, Nasheed Hossain, Rammurti T Kamble, Mohamed Kharfan-Dabaja, Tamila Kindwall-Keller, Robert Kyle, Shaji Kumar, Hillard Lazarus, Cindy Lee, Angelo Maiolino, David I Marks, Kenneth Meehan, Joe Mikhael, Rajneesh Nath, Taiga Nishihori, Richard F Olsson, Muthalagu Ramanathan, Ayman Saad, Sachiko Seo, Saad Usmani, David Vesole, Ravi Vij, Dan Vogl, Baldeep M Wirk, Jean Yared, Amrita Krishnan, Tomer Mark, Yago Nieto, Parameswaran Hari
Bortezomib (V), lenalidomide (R), cyclophosphamide (C) and dexamethasone (D) are components of the most commonly used modern doublet (RD, VD) or triplet (VRD, CVD) initial induction regimens prior to autologous hematopoietic cell transplantation (AHCT) for multiple myeloma (MM) in the US. In this study we evaluated 693 patients receiving "upfront" AHCT after initial induction therapy with modern doublet or triplet regimens using data reported to the Center for International Blood and Marrow Transplant Research from 2008-2013...
November 15, 2016: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/27861164/microstructure-and-dynamics-of-vacancy-induced-nanofilamentary-switching-network-in-donor-doped-srtio3-x-memristors
#18
Hussein Nili, Taimur Ahmed, Sumeet Walia, Rajesh Ramanathan, Ahmad Esmaielzadeh Kandjani, Sergey Rubanov, Jeeson Kim, Omid Kavehei, Vipul Bansal, Madhu Bhaskaran, Sharath Sriram
Donor doping of perovskite oxides has emerged as an attractive technique to create high performance and low energy non-volatile analog memories. Here, we examine the origins of improved switching performance and stable multi-state resistive switching in Nb-doped oxygen-deficient amorphous SrTiO3 (Nb:a-STO x ) metal-insulator-metal (MIM) devices. We probe the impact of substitutional dopants (i.e., Nb) in modulating the electronic structure and subsequent switching performance. Temperature stability and bias/time dependence of the switching behavior are used to ascertain the role of substitutional dopants and highlight their utility to modulate volatile and non-volatile behavior in a-STO x devices for adaptive and neuromorphic applications...
December 16, 2016: Nanotechnology
https://www.readbyqxmd.com/read/27859674/an-integrative-drug-repurposing-pipeline-switching-viral-drugs-to-breast-cancer
#19
K Ramanathan, Kanika Verma, Velin Marita Sequeira, B Lokapriya Nandan, V Shanthi
The growing incidence rate of breast cancer, coupled with cellular chemotherapeutic resistance, has made this disease one of the most prevalent cancers among women worldwide. Despite the recent efforts to understand the underlying cause of the resistance due to mutation, there are no feasible tactics to overcome this bottleneck. This issue could be addressed by the concept of polypharmacology - disguising drugs present in the pharmacopeia for novel purposes (drug repurposing). Of note, we have proposed a multi-modal computational drug repositioning stratagem to predict drugs possessing anti-proliferative effect...
November 17, 2016: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/27857462/sclerosing-liposarcoma-of-epididymis-role-of-chemical-shift-magnetic-resonance-imaging
#20
Subramaniyan Ramanathan, Vineetha Raghu, Devendra Kumar, Venkata R P Sempiege
Sclerosing liposarcoma of epididymis is a rare extratesticular scrotal tumor with variable prognosis. Ultrasonography is the initial imaging modality of choice for the evaluation of scrotal mass and helps to differentiate testicular and extratesticular masses, thereby narrowing down the differential diagnosis. Magnetic resonance imaging with its excellent soft tissue resolution can help in the further characterization of the nature of the tumor. In this case report, we highlight the role of chemical shift imaging in making a confident preoperative diagnosis of liposarcoma thereby guiding optimal and timely management...
July 2016: Indian Journal of Radiology & Imaging
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