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https://www.readbyqxmd.com/read/28928527/lipase-catalyzed-transesterification-of-ethyl-butyrate-synthesis-in-n-hexane-a-kinetic-study
#1
N Annapurna Devi, G B Radhika, R J Bhargavi
Kinetics of lipase catalyzed transesterification of ethyl caprate and butyric acid was investigated. The objective of this work was to propose a reaction mechanism and develop a rate equation for the synthesis of ethyl butyrate by transesterification using surfactant coated lipase from Candida rugosa. The reaction rate could be described in terms of Michaelis-Menten equation with a Ping-Pong Bi-Bi mechanism and competitive inhibition by both the substrates. The values of kinetic parameters computed were Vmax = 2...
August 2017: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/28923753/concentration-and-spatial-distribution-of-organophosphate-esters-in-the-soil-sediment-profile-of-kathmandu-valley-nepal-implication-for-risk-assessment
#2
Ishwar Chandra Yadav, Ningombam Linthoingambi Devi, Jun Li, Gan Zhang, Adrian Covaci
Despite the fact that soil and sediments, which act as a sink or potential source of organic pollutants, have been polluted with organophosphate esters (OPEs) around the globe, extremely constrained data is accessible on environmental concentration and fate of OPEs in solid matrices in whole of the South Asia particularly if there should be an occurrence in Nepal. In this study, surface soil (N=19) and sediments samples (N=20) were analyzed for eight different OPE in Kathmandu Valley during October 2014. The concentration of ∑8OPE measured in sediments samples was 12 times higher than soil and ranged 983-7460ng/g dw (median 2210ng/g dw) and 65-27,500ng/g dw (186ng/g dw), respectively...
September 15, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28921884/structural-characterization-and-functional-analysis-of-cystathionine-%C3%AE-synthase-an-enzyme-involved-in-the-reverse-transsulfuration-pathway-of-bacillus-anthracis
#3
Suneeta Devi, Syed Arif Abdul Rehman, Khaja Faisal Tarique, Samudrala Gourinath
The reverse transsulfuration pathway has been reported to produce cysteine from homocysteine in eukaryotes ranging from protozoans to mammals while bacteria and plants produce cysteine via a de-novo pathway. Interestingly, the bacterium Bacillus anthracis includes enzymes of the reverse transsulfuration pathway viz. cystathionine β-synthase (BaCBS, previously annotated to be an O-acetylserine sulfhydrylase (OASS)) and cystathionine γ-lyase. Here, we report the structure of BaCBS at a resolution of 2.2 Å...
September 16, 2017: FEBS Journal
https://www.readbyqxmd.com/read/28919696/potential-of-pomegranate-fruit-extract-punica-granatum-linn-to-increase-vascular-endothelial-growth-factor-and-platelet-derived-growth-factor-expressions-on-the-post-tooth-extraction-wound-of-cavia-cobaya
#4
Intan Nirwana, Priyawan Rachmadi, Devi Rianti
BACKGROUND: Pomegranates fruit extracts have several activities, among others, anti-inflammatory, antibacterial, and antioxidants that have the main content punicalagin and ellagic acid. Pomegranate has the ability of various therapies through different mechanisms. Vascular endothelial growth factor (VEGF) function was to form new blood vessels produced by various cells one of them was macrophages. Platelet-derived growth factor (PDGF) was a growth factor proven chemotactic, increased fibroblast proliferation and collagen matrix production...
August 2017: Veterinary World
https://www.readbyqxmd.com/read/28918903/saga-is-a-general-cofactor-for-rna-polymerase-ii-transcription
#5
Tiago Baptista, Sebastian Grünberg, Nadège Minoungou, Maria J E Koster, H T Marc Timmers, Steve Hahn, Didier Devys, László Tora
Prior studies suggested that SAGA and TFIID are alternative factors that promote RNA polymerase II transcription, with about 10% of genes in S. cerevisiae dependent on SAGA. We reassessed the role of SAGA by mapping its genome-wide location and role in global transcription in budding yeast. We find that SAGA maps to the UAS elements of most genes, overlapping with Mediator binding and irrespective of previous designations of SAGA- or TFIID-dominated genes. Disruption of SAGA through mutation or rapid subunit depletion reduces transcription from nearly all genes, measured by newly synthesized RNA...
September 11, 2017: Molecular Cell
https://www.readbyqxmd.com/read/28918900/transcription-of-nearly-all-yeast-rna-polymerase-ii-transcribed-genes-is-dependent-on-transcription-factor-tfiid
#6
Linda Warfield, Srinivas Ramachandran, Tiago Baptista, Didier Devys, Laszlo Tora, Steven Hahn
Previous studies suggested that expression of most yeast mRNAs is dominated by either transcription factor TFIID or SAGA. We re-examined the role of TFIID by rapid depletion of S. cerevisiae TFIID subunits and measurement of changes in nascent transcription. We find that transcription of nearly all mRNAs is strongly dependent on TFIID function. Degron-dependent depletion of Taf1, Taf2, Taf7, Taf11, and Taf13 showed similar transcription decreases for genes in the Taf1-depleted, Taf1-enriched, TATA-containing, and TATA-less gene classes...
September 13, 2017: Molecular Cell
https://www.readbyqxmd.com/read/28916456/acanthamoebicidal-activity-of-periglaucine-a-and-betulinic-acid-from-pericampylus-glaucus-lam-merr-in-vitro
#7
Tooba Mahboob, Abdul-Majid Azlan, Fiona Shilpton, Patchraporn Beekoom, Nadiah Syafiqah Nor Azman, Shamala Devi Sekaran, Init Ithoi, Tian-Chye Tan, Chandramathi Samudi, Christophe Wiart, Veeranoot Nissapatorn
Acanthamoeba species are pathogenic protozoa which account for amoebic keratitis, conjunctivitis and granulomatous amoebic encephalitis. These amoebae form cysts which resist drugs and more effective acanthamoebicidal agents are needed. Medicinal plants could be useful in improving the current treatment strategies for Acanthamoeba infections. In the present study, we examined the amoebicidal effects of Pericampylus glaucus (Lam.) Merr., a medicinal plant used for the treatment of conjunctivitis in Malaysia...
September 12, 2017: Experimental Parasitology
https://www.readbyqxmd.com/read/28912793/diverse-rice-landraces-of-north-east-india-enables-the-identification-of-novel-genetic-resources-for-magnaporthe-resistance
#8
Bangale Umakanth, Balija Vishalakshi, P Sathish Kumar, S J S Rama Devi, Vijay Pal Bhadana, P Senguttuvel, Sudhir Kumar, Susheel Kumar Sharma, Pawan Kumar Sharma, M S Prasad, Maganti S Madhav
North-East (NE) India, the probable origin of rice has diverse genetic resources. Many rice landraces of NE India were not yet characterized for blast resistance. A set of 232 landraces of NE India, were screened for field resistance at two different hotspots of rice blast, viz., IIRR-UBN, Hyderabad and ICAR-NEH, Manipur in two consecutive seasons. The phenotypic evaluation as well as gene profiling for 12 major blast resistance genes (Pitp, Pi33, Pi54, Pib, Pi20, Pi38, Pita2, Pi1, Piz, Pi9, Pizt, and Pi40) with linked as well as gene-specific markers, identified 84 resistant landraces possessing different gene(s) either in singly or in combinations and also identified seven resistant landraces which do not have the tested genes, indicating the valuable genetic resources for blast resistance...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28911759/can-reverse-innovation-catalyse-better-value-health-care
#9
Faheem Ahmed, Na'eem Ahmed, Tim W R Briggs, Peter J Pronovost, Devi P Shetty, Ashish K Jha, Vijay Govindarajan
No abstract text is available yet for this article.
October 2017: Lancet Global Health
https://www.readbyqxmd.com/read/28906136/redo-quadruple-valve-repair-after-ross-procedure-a-viable-option
#10
V Rao Parachuri, Srilakshmi M Adhyapak, Devi Prasad Shetty
Quadruple-valve repair or replacement is associated with significant morbidity and mortality because the clinical situation of severe disease of all 4 valves implies incipient myocardial damage. We report a case of redo quadruple-valve repair in a patient with rheumatic heart disease who had undergone the Ross procedure 14 years earlier. He presented with heart failure. Cardiac evaluation revealed severe disease of all 4 valves, necessitating surgery. Because he was in advanced heart failure and all 4 valves were suitable for repair, a quadruple-valve repair was performed...
January 1, 2017: Asian Cardiovascular & Thoracic Annals
https://www.readbyqxmd.com/read/28905834/microsporidial-infection-masquerading-as-graft-rejection-post-descemet-s-stripping-automated-endothelial-keratoplasty
#11
Lumbini Devi, N Venkatesh Prajna, Muthiah Srinivasan, Naveen Radhakrishnan, Manoranjan Das
A 51-year-old immunocompetent male with a history of Fuchs' endothelial dystrophy and immature cataract who underwent Descemet's stripping automated endothelial keratoplasty with intraocular lens implantation in both eyes presented with redness and defective vision of 1-day duration in his left eye. Slit lamp examination revealed coarse superficial punctate lesions with graft edema. He was diagnosed with acute graft rejection and treated with topical steroids. Two days later, symptoms worsened in his left eye with the involvement of his right eye showing a similar clinical picture...
September 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/28904476/a-methodological-study-to-develop-a-standard-operational-protocol-for-nurses-on-central-line-catheter-care-of-patients-in-selected-intensive-care-units
#12
Rashmita Devi, Sandhya Ghai, Neena Vir Singh, G D Puri
AIM: This study aims to develop a standard operational protocol (SOP) for central line catheter care for nurses. MATERIALS AND METHODS: A preliminary draft of protocol based on extensive review of the literature was developed. The current practices of the nurses regarding central line catheter care were observed. Focus group discussions (FGD) were conducted with the nurses to identify the problems encountered by them during care of central line. Four rounds of Delphi were conducted to validate the protocol...
August 2017: Indian Journal of Critical Care Medicine
https://www.readbyqxmd.com/read/28904353/toll-like-receptor%C3%A2-2-induced-cytotoxic-t-lymphocyte-associated-protein%C3%A2-4-regulates-aspergillus-induced-regulatory-t-cells-with-pro-inflammatory-characteristics
#13
Ruud P H Raijmakers, Evelien G G Sprenkeler, Floor E Aleva, Cor W M Jacobs, Thirumala-Devi Kanneganti, Leo A B Joosten, Frank L van de Veerdonk, Mark S Gresnigt
Patients with cystic fibrosis, chronic obstructive pulmonary disease, severe asthma, pre-existing pulmonary lesions, and severely immunocompromised patients are susceptible to develop infections with the opportunistic pathogenic fungus Aspergillus fumigatus, called aspergillosis. Infections in these patients are associated with persistent pro-inflammatory T-helper (TH)2 and TH17 responses. Regulatory T-cells, natural suppressor cells of the immune system, control pro-inflammatory T-cell responses, but can also contribute to disease by shifting to a pro-inflammatory TH17-like phenotype...
September 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28895297/changing-trends-in-therapeutic-plasmapheresis-an-indian-perspective
#14
Aseem K Tiwari, Gunjan Bhardwaj, Geet Aggarwal, Dinesh Arora, Ravi C Dara, Devi P Acharya, Sangeetha Gayam, Jui Choudhuri
Indications for therapeutic apheresis (TA) are dynamic; they keep changing and expanding because of introduction of newer treatment modalities and accumulating evidence in the form of case-reports, case-series and original articles. We evaluated our therapeutic plasmapheresis (TP) data and compared this data with an earlier published Indian report for indications, frequency, response rate and adverse reactions. We conducted a retrospective analysis of all TP procedures performed from January 2014 to June 2016 in department of Transfusion Medicine at a tertiary care hospital...
September 11, 2017: Therapeutic Apheresis and Dialysis
https://www.readbyqxmd.com/read/28894949/diet-and-feeding-ecology-of-the-western-hoolock-gibbon-hoolock-hoolock-in-a-tropical-forest-fragment-of-northeast-india
#15
Mrigakhi Borah, Ashalata Devi, Awadhesh Kumar
Forest fragmentation alters plant species diversity and composition, and causes diverse affects on the feeding behavior of wild primates. We investigated the feeding behavior and diet of two groups of western hoolock gibbon (Hoolock hoolock) inhabiting a small isolated forest patch (21 km(2)) in Hollongapar Gibbon Wildlife Sanctuary, Assam, Northeast India, over a year using focal animal sampling. H. hoolock adults spent, on average, 35.2% of their total annual activity budget on feeding, and fed on young leaves, mature leaves, flowers, fruits, petioles, buds and also on animal matter...
September 11, 2017: Primates; Journal of Primatology
https://www.readbyqxmd.com/read/28894365/photothermal-ablation-of-inflammatory-breast-cancer-tumor-emboli-using-plasmonic-gold-nanostars
#16
Bridget M Crawford, Ronnie L Shammas, Andrew M Fales, David A Brown, Scott T Hollenbeck, Tuan Vo-Dinh, Gayathri R Devi
Inflammatory breast cancer (IBC) is rare, but it is the most aggressive subtype of breast cancer. IBC has a unique presentation of diffuse tumor cell clusters called tumor emboli in the dermis of the chest wall that block lymph vessels causing a painful, erythematous, and edematous breast. Lack of effective therapeutic treatments has caused mortality rates of this cancer to reach 20%-30% in case of women with stage III-IV disease. Plasmonic nanoparticles, via photothermal ablation, are emerging as lead candidates in next-generation cancer treatment for site-specific cell death...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28892911/benign-beale-gland-hyperplasia-mimicking-malignant-biliary-obstruction
#17
Durairaj Segamalai, Anand Lakshmanan, Abdul Rehman Abdul Jameel, Sofiya Chandrabapulu, Kannan Devy Gounder
Extrahepatic bile duct obstruction can be caused by various pathologies, most of them being malignant. Painless, progressive jaundice is the usual mode of presentation. We report a case of distal Common Bile Duct (CBD) obstruction due to a Benign Intramural Beale gland hyperplasia mimicking a periampullary carcinoma. Peribiliary glands (Beale Glands) are a group of seromucinous glands, normally seen within the fibromuscular wall and periductal connective tissue in the extrahepatic and large intrahepatic ducts and also in the neck of the Gall bladder...
July 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28891200/enhanced-production-of-soluble-recombinant-proteins-with-an-in-situ-removable-fusion-partner-in-a-cell-free-synthesis-system
#18
Devi Kasi, Hee Ju Nah, Christy Catherine, Eung-Soo Kim, Kyubeom Han, Jong-Cheon Ha, Dong-Myung Kim
High-yield production of soluble protein is a common concern in diverse fields of biotechnology. In this study, a strategy of using an engineered nucleotide sequence of ubiquitin for enhancing the production of soluble proteins in a cell-free synthesis system is presented. When examined for a series of proteins that otherwise were poorly expressed, N-terminal fusion with ubiquitin significantly increased both the expression levels and solubility of the translational products. The effect of ubiquitin fusion was also markedly augmented by engineering the nucleotide sequence of ubiquitin, leading to several fold enhancements in soluble production of target proteins...
September 11, 2017: Biotechnology Journal
https://www.readbyqxmd.com/read/28888965/-click-reaction-based-synthesis-of-nimbolide-derivatives-and-study-of-their-insect-antifeedant-activity-against-spodoptera-litura-larvae
#19
Bandi Siva, Amujuri Devi, Arramsetti Venkanna, Borra Poornima, Genji Sukumar, Solipeta Divya Reddy, Movva Vijaya, Ramesh Ummanni, Katragadda Suresh Babu
A series of Nimbolide-triazole conjugates were synthesized through copper(I)- catalyzed azide-alkyne "click" chemistry approach and these derivatives (2-4, 2a-2l) were characterized using modern spectroscopic techniques. Antifeedant activities of these derivatives were studied on Tobacco Caterpillar, Spodoptera litura (F.) using no-choice leaf disk bioassay. Interestingly, the synthesized derivatives were more effective in reducing feedancy by insect species when compared to the parent nimbolide. Among the tested compounds, 2a, 2c, and 2d showed potent antifeedancy with ED50 values of 0...
September 6, 2017: Fitoterapia
https://www.readbyqxmd.com/read/28886504/experiences-of-service-users-involved-in-recruitment-for-nursing-courses-a-phenomenological-research-study
#20
Katie Stevens, Cathy Bernal, Kate Devis, Andrew Southgate
The aim of this study was to gain insight into service users' experiences of participating in recruitment for Adult, Mental Health and Child nursing studies at the authors' university; to establish potential motivations behind such participation; and to make suggestions for improved future practice. The involvement of service users in nurse education and recruitment has for some years been required by the Nursing and Midwifery Council, but there is a dearth of publications on the meaning of that involvement to participating service users...
August 15, 2017: Nurse Education Today
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