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https://www.readbyqxmd.com/read/28393638/vascular-territorial-segmentation-and-volumetric-blood-flow-measurement-using-dynamic-contrast-enhanced-magnetic-resonance-angiography-of-the-brain
#1
Oren Geri, Shelly I Shiran, Jonathan Roth, Moran Artzi, Liat Ben-Sira, Dafna Ben Bashat
This study proposes a method for territorial segmentation and volumetric flow rate (VFR) distribution measurement of cerebral territories based on time-resolved contrast enhanced magnetic-resonance-angiography (MRA). The method uses an iterative region-growing algorithm based on bolus-arrival-time with increased temporal resolution. Eight territories were segmented: (1) right and (2) left internal carotid arteries, including the middle cerebral artery (ICA+MCA), excluding the anterior cerebral arteries (ACA); (3) right and left ACA (R+L-ACA); (4) right and (5) left external carotid arteries (ECA); (6) right and (7) left posterior cerebral arteries (PCA); and (8) vertebrobasilar territory...
January 1, 2017: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/28289902/discovery-of-synthesis-and-secretion-of-polyol-esters-of-fatty-acids-by-four-basidiomycetous-yeast-species-in-the-order-sporidiobolales
#2
Luis A Garay, Irnayuli R Sitepu, Tomas Cajka, Oliver Fiehn, Erin Cathcart, Russell W Fry, Atit Kanti, Agustinus Joko Nugroho, Sarah Asih Faulina, Sira Stephanandra, J Bruce German, Kyria L Boundy-Mills
Polyol esters of fatty acids (PEFA) are amphiphilic glycolipids produced by yeast that could play a role as natural, environmentally friendly biosurfactants. We recently reported discovery of a new PEFA-secreting yeast species, Rhodotorula babjevae, a basidiomycetous yeast to display this behavior, in addition to a few other Rhodotorula yeasts reported on the 1960s. Additional yeast species within the taxonomic order Sporidiobolales were screened for secreted glycolipid production. PEFA production equal or above 1 g L(-1) were detected in 19 out of 65 strains of yeast screened, belonging to 6 out of 30 yeast species tested...
March 13, 2017: Journal of Industrial Microbiology & Biotechnology
https://www.readbyqxmd.com/read/28286529/a-synthetic-strategy-for-conjugation-of-paromomycin-to-cell-penetrating-tat-48-60-for-delivery-and-visualization-into-leishmania-parasites
#3
Sira Defaus, Maria Gallo, María A Abengózar, Luis Rivas, David Andreu
A successful approach to deliver paromomycin, a poorly absorbed aminoglycoside antibiotic, to parasite cells is reported, based on selective protection of amino and hydroxyl groups followed by conjugation to a fluorolabeled, PEG-functionalized cell-penetrating Tat(48-60) peptide. The resulting construct is efficiently internalized into Leishmania cells, evidencing the fitness of cell-penetrating peptides as vectors for efficiently transporting low-bioavailability drugs into cells.
2017: International Journal of Peptides
https://www.readbyqxmd.com/read/28272414/defined-chromosome-structure-in-the-genome-reduced-bacterium-mycoplasma-pneumoniae
#4
Marie Trussart, Eva Yus, Sira Martinez, Davide Baù, Yuhei O Tahara, Thomas Pengo, Michael Widjaja, Simon Kretschmer, Jim Swoger, Steven Djordjevic, Lynne Turnbull, Cynthia Whitchurch, Makoto Miyata, Marc A Marti-Renom, Maria Lluch-Senar, Luís Serrano
DNA-binding proteins are central regulators of chromosome organization; however, in genome-reduced bacteria their diversity is largely diminished. Whether the chromosomes of such bacteria adopt defined three-dimensional structures remains unexplored. Here we combine Hi-C and super-resolution microscopy to determine the structure of the Mycoplasma pneumoniae chromosome at a 10 kb resolution. We find a defined structure, with a global symmetry between two arms that connect opposite poles, one bearing the chromosomal Ori and the other the midpoint...
March 8, 2017: Nature Communications
https://www.readbyqxmd.com/read/28223073/immunotherapy-comes-of-age-immune-aging-checkpoint-inhibitors
#5
REVIEW
Rawad Elias, Theodoros Karantanos, Elizabeth Sira, Kevan L Hartshorn
Immune checkpoint inhibitors (ICIs) are based on the understanding that there are multilayered checks and balances which can be manipulated to unleash already existing, but paralyzed, immune responses to cancer. These agents are safer and more efficacious than classic cytotoxic drugs making them a very attractive therapeutic option, especially in older adults. Current available data do not suggest significant age-associated differences in the clinical profile of ICIs. It must be noted, however, that there is still relatively little information on the use of ICIs in adults over 75years of age and aging is associated with a decline in the immune system or "immunosenescence" which theoretically can reduce the efficacy of these immune based therapies...
February 17, 2017: Journal of Geriatric Oncology
https://www.readbyqxmd.com/read/28218670/religion-and-animal-welfare-an-islamic-perspective
#6
REVIEW
Sira Abdul Rahman
Islam is a comprehensive religion guiding the lives of its followers through sets of rules governing the personal, social, and public aspects through the verses of the Holy Qur'an and Hadiths, the compilation of the traditions of Prophet Mohammed (pbuh), the two main documents that serve as guidelines. Islam is explicit with regard to using animals for human purposes and there is a rich tradition of the Prophet Mohammad's (pbuh) concern for animals to be found in the Hadith and Sunna. Islam has also laid down rules for humane slaughter...
February 17, 2017: Animals: An Open Access Journal From MDPI
https://www.readbyqxmd.com/read/28127714/short-and-long-term-outcomes-of-laparoscopic-organ-sparing-resection-in-pancreatic-neuroendocrine-tumors-a-single-center-experience
#7
Javier A Cienfuegos, Joseba Salguero, Jorge M Núñez-Córdoba, Miguel Ruiz-Canela, Alberto Benito, Sira Ocaña, Gabriel Zozaya, Pablo Martí-Cruchaga, Fernando Pardo, José Luis Hernández-Lizoáin, Fernando Rotellar
BACKGROUND: Laparoscopic organ-sparing pancreatectomy (LOSP) is an ideal therapeutic option in selected cases of pancreatic neuroendocrine tumors (PNETs). Nevertheless, given the low frequency of PNETs, there is scarce evidence regarding short and particularly long-term outcomes of LOSP in this clinical setting. METHODS: All patients with PNETs who underwent surgery (under a LOSP policy) were retrospectively reviewed from a prospective database maintained at our center...
January 26, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28094094/sira-p-development-and-testing
#8
Kristina L Foster, Lacey D Bergerhofer, Janis B Smith, Michele M Fix, Adrienne Olney, Ashley Sherman
OBJECTIVES: To describe the development of a new skin risk assessment scale called Skin Injury Risk Assessment and Prevention (SIRA+P) and to establish initial reliability and validity of the scale among patients ranging in age from birth, including pre-term, to adulthood, regardless of age or acuity of illness. STUDY DESIGN: The single-site study was a retrospective chart review to evaluate the measurement properties of SIRA+P. Charts of 385 patients of all ages and in all units (including the neonatal and pediatric intensive care units) of a free-standing children's hospital were included...
January 13, 2017: Journal of Pediatric Nursing
https://www.readbyqxmd.com/read/28087649/identification-of-unique-essential-proteins-from-a-mycobacterium-tuberculosis-f15-lam4-kzn-phage-secretome-library
#9
Thamsanqa Emmanuel Chiliza, Manormoney Pillay, Balakrishna Pillay
Mycobacterium tuberculosis (Mtb) is the causative agent of tuberculosis disease (TB), the leading cause of death from bacterial infection worldwide. Although treatable, the resurgence of multidrug-resistant and extensively drug-resistant TB is a major setback for the fight against TB globally. Consequently, there is an urgent need for new Mtb-derived biomarkers for use in the design of new drugs and rapid point-of-care diagnostic or prognostic tools for the management of TB transmission. Therefore, the present study aimed to identify unique Mtb-secreted proteins from the extensively drug-resistant Mtb F15/LAM4/KZN phage secretome library...
January 1, 2017: Pathogens and Disease
https://www.readbyqxmd.com/read/28005170/improv-ed-study-outcomes-after-discharge-for-an-episode-of-acute-decompensated-heart-failure-and-comparison-between-patients-discharged-from-the-emergency-department-and-hospital-wards
#10
Òscar Miró, Víctor Gil, Carolina Xipell, Carolina Sánchez, Sira Aguiló, Francisco J Martín-Sánchez, Pablo Herrero, Javier Jacob, Alexandre Mebazaa, Veli-Pekka Harjola, Pere Llorens
OBJECTIVE: To define the short- and mid-term outcomes of patients discharged after an episode of acute-decompensated heart failure (ADHF) and evaluate the differences between patients discharged directly from the emergency department (ED) and those discharged after hospitalization. METHODS: We performed a prospective, multicenter, cohort-designed study, including consecutive patients diagnosed with ADHF in 27 Spanish EDs. Thirty-four variables on epidemiology, comorbidity, baseline status, vital signs, signs of congestion, laboratory tests, and treatment were collected in every patient...
December 22, 2016: Clinical Research in Cardiology: Official Journal of the German Cardiac Society
https://www.readbyqxmd.com/read/28003329/early-onset-juvenile-sle-associated-with-a-novel-mutation-in-protein-kinase-c-%C3%AE
#11
Sira Nanthapisal, Ebun Omoyinmi, Claire Murphy, Ariane Standing, Michael Eisenhut, Despina Eleftheriou, Paul A Brogan
Juvenile systemic lupus erythematosus (jSLE) is rare before 5 years of age. Monogenic causes are suspected in cases of very early onset jSLE particularly in the context of a family history and/or consanguinity. We performed whole-exome sequencing and homozygosity mapping in the siblings presented with early-onset jSLE. A novel homozygous missense mutation in protein kinase C delta (c.1294G>T; p.Gly432Trp) was identified in both patients. One patient showed a marked clinical response and resolution inflammation with rituximab therapy...
January 2017: Pediatrics
https://www.readbyqxmd.com/read/27994071/autoinflammatory-periodic-fever-immunodeficiency-and-thrombocytopenia-pfit-caused-by-mutation-in-actin-regulatory-gene-wdr1
#12
Ariane S I Standing, Dessislava Malinova, Ying Hong, Julien Record, Dale Moulding, Michael P Blundell, Karolin Nowak, Hannah Jones, Ebun Omoyinmi, Kimberly C Gilmour, Alan Medlar, Horia Stanescu, Robert Kleta, Glenn Anderson, Sira Nanthapisal, Sonia Melo Gomes, Nigel Klein, Despina Eleftheriou, Adrian J Thrasher, Paul A Brogan
The importance of actin dynamics in the activation of the inflammasome is becoming increasingly apparent. IL-1β, which is activated by the inflammasome, is known to be central to the pathogenesis of many monogenic autoinflammatory diseases. However, evidence from an autoinflammatory murine model indicates that IL-18, the other cytokine triggered by inflammasome activity, is important in its own right. In this model, autoinflammation was caused by mutation in the actin regulatory gene WDR1 We report a homozygous missense mutation in WDR1 in two siblings causing periodic fevers with immunodeficiency and thrombocytopenia...
January 2017: Journal of Experimental Medicine
https://www.readbyqxmd.com/read/27989623/full-length-anion-exchanger-1-structure-and-interactions-with-ankyrin-1-determined-by-zero-length-crosslinking-of-erythrocyte-membranes
#13
Roland Rivera-Santiago, Sandra L Harper, Sira Sriswasdi, Peter Hembach, David W Speicher
Anion exchanger 1 (AE1) is a critical transporter and the primary structural scaffold for large macromolecular complexes responsible for erythrocyte membrane flexibility and integrity. We used zero-length crosslinking and mass spectrometry to probe AE1 structures and interactions in intact erythrocyte membranes. An experimentally verified full-length model of AE1 dimers was developed by combining crosslink-defined distance constraints with homology modeling. Previously unresolved cytoplasmic loops in the AE1 C-terminal domain are packed at the domain-domain interface on the cytoplasmic face of the membrane where they anchor the N-terminal domain's location and prevent it from occluding the ion channel...
January 3, 2017: Structure
https://www.readbyqxmd.com/read/27899002/in-axial-spondyloarthritis-never-smokers-ex-smokers-and-current-smokers-show-a-gradient-of-increasing-disease-severity-results-from-the-scotland-registry-for-ankylosing-spondylitis-siras
#14
Gareth T Jones, Tiara Ratz, Linda E Dean, Gary J Macfarlane, Fabiola Atzeni
Objectives To examine the relationship between smoking, smoking cessation, and disease characteristics/quality of life (QoL) in spondyloarthritis. Methods The Scotland Registry for Ankylosing Spondylitis collects data from clinically diagnosed patients with spondyloarthritis. Clinical data, including Bath Ankylosing Spondylitis indices of disease activity (BASDAI) and function (BASFI), was obtained from medical records. Postal questionnaires provided information on smoking status and QoL (Ankylosing Spondylitis QoL questionnaire; ASQoL)...
November 29, 2016: Arthritis Care & Research
https://www.readbyqxmd.com/read/27847312/the-alternative-use-of-layered-double-hydroxides-as-extraction-medium-coupled-with-microcomplexation-for-determination-of-phosphate-in-water-samples
#15
Netsirin Gissawong, Sira Sansuk, Supalax Srijaranai
A simple, rapid, in situ, and green extraction combined with a microcomplexation has been developed for the spectrophotometric determination of phosphate in water samples. Through their formation, layered double hydroxides (LDHs) were employed as the extraction medium, instantly commenced by a rapid addition of a mixed solution of Mg(2+) and Al(3+) ions into alkaline phosphate solution. After the extraction, LDH precipitate containing phosphate was dissolved by sulfuric acid and the released phosphate was subsequently detected via its complexation with molybdate in the presence of antimonyl and ascorbic acid...
February 15, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/27826779/single-incision-retroperitoneoscopic-adrenalectomy-a-north-american-experience
#16
Shonan Sho, Michael W Yeh, Ning Li, Masha J Livhits
BACKGROUND: Endoscopic adrenalectomy is currently performed using multiple ports placed either transabdominally or retroperitoneally. We report our initial experience with single-incision retroperitoneoscopic adrenalectomy (SIRA). METHODS: A prospective database of patients undergoing adrenalectomy from December 2013 through March 2016 was analyzed. We adopted conventional retroperitoneoscopic adrenalectomy (CORA) in December 2013 and transitioned to SIRA in March 2015...
November 8, 2016: Surgical Endoscopy
https://www.readbyqxmd.com/read/27799539/membrane-protein-structure-determination-by-sad-sir-or-siras-phasing-in-serial-femtosecond-crystallography-using-an-iododetergent
#17
Takanori Nakane, Shinya Hanashima, Mamoru Suzuki, Haruka Saiki, Taichi Hayashi, Keisuke Kakinouchi, Shigeru Sugiyama, Satoshi Kawatake, Shigeru Matsuoka, Nobuaki Matsumori, Eriko Nango, Jun Kobayashi, Tatsuro Shimamura, Kanako Kimura, Chihiro Mori, Naoki Kunishima, Michihiro Sugahara, Yoko Takakyu, Shigeyuki Inoue, Tetsuya Masuda, Toshiaki Hosaka, Kensuke Tono, Yasumasa Joti, Takashi Kameshima, Takaki Hatsui, Makina Yabashi, Tsuyoshi Inoue, Osamu Nureki, So Iwata, Michio Murata, Eiichi Mizohata
The 3D structure determination of biological macromolecules by X-ray crystallography suffers from a phase problem: to perform Fourier transformation to calculate real space density maps, both intensities and phases of structure factors are necessary; however, measured diffraction patterns give only intensities. Although serial femtosecond crystallography (SFX) using X-ray free electron lasers (XFELs) has been steadily developed since 2009, experimental phasing still remains challenging. Here, using 7.0-keV (1...
November 15, 2016: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/27788278/continuity-from-prelinguistic-communication-to-later-language-ability-a-follow-up-study-from-infancy-to-early-school-age
#18
Sira Määttä, Marja-Leena Laakso, Timo Ahonen Asko Tolvanen, Jari Westerholm, Tuija Aro
Purpose: This longitudinal study examined the development of prelinguistic skills and the continuity of communication and language from the prelinguistic stage to school age. Method: Prelinguistic communication of 427 Finnish children was followed repeatedly from 6 to 18 months of age (n = 203-322 at ages 6, 9, 12, 15, and 18 months), and its associations with language ability at ages 2;0 (n = 104), 3;0 (n = 112), 4;7 (n = 253), 5;3 (n = 102), and 7;9 (n = 236) were examined using latent growth curve modeling...
December 1, 2016: Journal of Speech, Language, and Hearing Research: JSLHR
https://www.readbyqxmd.com/read/27777465/effect-of-maltodextrin-on-characteristics-and-antioxidative-activity-of-spray-dried-powder-of-gelatin-and-gelatin-hydrolysate-from-scales-of-spotted-golden-goatfish
#19
Sira Chuaychan, Soottawat Benjakul
Characteristics and antioxidative activity of gelatin and gelatin hydrolysate powders from scale of spotted golden goatfish using maltodextrin as a carrier agent at different ratios [1:0, 2:1, 1:1 and 1:2 (w/w)] were investigated. Gelatin hydrolysates with 40 % degree of hydrolysis exhibited the highest antioxidative activity. With increasing maltodextrin proportions, the resulting powders showed an increase in yields, total sugar content and whiteness with coincidental decrease in [Formula: see text], [Formula: see text]-values and browning intensity...
September 2016: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/27769473/dynamic-single-interface-hollow-fiber-liquid-phase-microextraction-of-cr-vi-using-ionic-liquid-containing-supported-liquid-membrane
#20
Rungaroon Pimparu, Sira Nitiyanontakit, Manuel Miró, Pakorn Varanusupakul
The concept of dynamic single-interface hollow fiber membrane liquid-phase microextraction (HF-LPME), where the target analyte was extracted on-line and eluted inside the lumen of the HF membrane, was explored. An ionic liquid containing supported liquid membrane was used for the trace determination of Cr(VI) as a model compound. Since the extraction took place on-line inside the hollow fiber membrane, the mass transfer behavior was described and discussed in comparison with the conventional HF-LPME. The extraction efficiency was improved by a recirculation configuration of the sample solution at relatively high sampling flow rates as a result of the increased effective contact area...
December 1, 2016: Talanta
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