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https://www.readbyqxmd.com/read/28088640/bioethanol-production-from-cellulosic-hydrolysates-by-engineered-industrial-saccharomyces-cerevisiae
#1
Ye-Gi Lee, Yong-Su Jin, Young-Lok Cha, Jin-Ho Seo
Even though industrial yeast strains exhibit numerous advantageous traits for the production of bioethanol, their genetic manipulation has been limited. This study demonstrates that an industrial polyploidy Saccharomyces cerevisiae JHS200 can be engineered through Cas9 (CRISPR associated protein 9)-based genome editing. Specifically, we generated auxotrophic mutants and introduced a xylose metabolic pathway into the auxotrophic mutants. As expected, the engineered strain (JX123) enhanced ethanol production from cellulosic hydrolysates as compared to other engineered haploid strains...
December 18, 2016: Bioresource Technology
https://www.readbyqxmd.com/read/28088633/quantitative-analysis-of-lab-to-lab-variability-in-caco-2-permeability-assays
#2
Jong Bong Lee, Atheer Zgair, Dhiaa A Taha, Xiaowei Zang, Leonid Kagan, Tae Hwan Kim, Min Gi Kim, Hwi-Yeol Yun, Peter M Fischer, Pavel Gershkovich
In this study, Caco-2 permeability results from different laboratories were compared. Six different sets of apparent permeability coefficient (Papp) values reported in the literature were compared to experimental Papp obtained in our laboratory. The differences were assessed by determining the root mean square error (RMSE) values between the datasets, which reached levels as high as 0.581 for the training set compounds, i.e. ten compounds with known effective human permeability (Peff). The consequences of these differences in Papp for prediction of oral drug absorption were demonstrated by introducing the Papp into the absorption and pharmacokinetics simulation software application GastroPlus(TM) for prediction of the fraction absorbed (Fa) in humans using calibrated "user-defined permeability models"...
January 11, 2017: European Journal of Pharmaceutics and Biopharmaceutics
https://www.readbyqxmd.com/read/28088607/transcatheter-aortic-valve-implantation-leads-to-a-restoration-of-von-willebrand-factor-vwf-abnormalities-in-patients-with-severe-aortic-stenosis-incidence-and-relevance-of-clinical-and-subclinical-vwf-dysfunction-in-patients-undergoing-transfemoral-tavi
#3
Alexander Sedaghat, Hannah Kulka, Jan-Malte Sinning, Nora Falkenberg, Julia Driesen, Barbara Preisler, Christoph Hammerstingl, Georg Nickenig, Bernd Pötzsch, Johannes Oldenburg, Hans-Jörg Hertfelder, Nikos Werner
BACKGROUND: In this study, we sought to analyze the incidence and relevance of von Willebrand factor (VWF) abnormalities in patients undergoing transcatheter aortic valve implantation (TAVI), especially on perioperative bleeding. Furthermore, we hypothesized that, similar to aortic valve surgery, TAVI results in a restoration of VWF abnormalities. METHODS AND RESULTS: We performed a prospective analysis of periinterventional VWF parameters in 74 patients (80±7years, female in 37...
January 7, 2017: Thrombosis Research
https://www.readbyqxmd.com/read/28088460/ultrasound-mediated-delivery-of-rna-to-colonic-mucosa-of-live-mice
#4
Carl M Schoellhammer, Gregory Y Lauwers, Jeremy A Goettel, Matthias A Oberli, Cody Cleveland, June Y Park, Daniel Minahan, Yiyun Chen, Daniel G Anderson, Ana Jaklenec, Scott B Snapper, Robert Langer, Giovanni Traverso
BACKGROUND & AIMS: It is a challenge to deliver nucleic acids to gastrointestinal (GI) tissues due to their size and need for intracellular delivery. They are also extremely susceptible to degradation by nucleases, which are ubiquitous in the GI tract. We investigated whether ultrasound, which can permeabilize tissue through a phenomenon known as transient cavitation, can be used to deliver RNA to the colonic mucosa of living mice. METHODS: We investigated delivery of fluorescently labeled permeants to colon tissues of Yorkshire pigs ex vivo and mice in vivo...
January 11, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28088376/how-early-must-an-acute-achilles-tendon-rupture-be-repaired
#5
Young Hwan Park, Seong Min Jeong, Gi Won Choi, Hak Jun Kim
An acute Achilles tendon rupture is the most common tendon rupture of the lower extremities, yet the optimal timing for an early surgical repair is unclear. To identify the optimal time for an early surgical repair with favorable results, we evaluated the isokinetic muscle strength and clinical outcomes of early surgical repairs of acute Achilles tendon ruptures performed at different time points after injury. Between January 2011 and July 2015, a total of 65 patients underwent an acute Achilles tendon rupture repair within 1 week after injury...
January 9, 2017: Injury
https://www.readbyqxmd.com/read/28088292/human-fetal-intestinal-epithelial-cells-metabolize-and-incorporate-branched-chain-fatty-acids-in-a-structure-specific-manner
#6
Lei Liu, Zhen Wang, Hui Gyu Park, Chuang Xu, Peter Lawrence, Xueli Su, Vasuki Wijendran, W Allan Walker, Kumar S D Kothapalli, J Thomas Brenna
BACKGROUND: Branched chain fatty acids (BCFA) are constituents of gastrointestinal (GI) tract in healthy newborn human infants, reduce the incidence of necrotizing enterocolitis (NEC) in a neonatal rat model, and are incorporated into small intestine cellular lipids in vivo. We hypothesize that BCFA are taken up, metabolized and incorporated into human fetal cells in vitro. METHODS: Human H4 cells, a fetal non-transformed primary small intestine cell line, were incubated with albumin-bound non-esterified anteiso-17:0, iso-16:0, iso-18:0 and/or iso-20:0, and FA profiles in lipid fractions were analyzed...
January 2017: Prostaglandins, Leukotrienes, and Essential Fatty Acids
https://www.readbyqxmd.com/read/28088291/bcfa-suppresses-lps-induced-il-8-mrna-expression-in-human-intestinal-epithelial-cells
#7
Y Yan, Z Wang, J Greenwald, K S D Kothapalli, H G Park, R Liu, E Mendralla, P Lawrence, X Wang, J T Brenna
Branched chain fatty acids (BCFA) are components of common food fats and are major constituents of the normal term human newborn GI tract. Polyunsaturated fatty acids (PUFA) have been suggested to reduce the risk and development of inflammatory bowel diseases (IBD); however, little is known about the influence of BCFA on inflammation. We investigated the effect of BCFA on interleukin (IL)-8 and NF-κB production in a human intestinal epithelial cell line (Caco-2). Cells were pre-treated with specific BCFA, or DHA, or EPA, and then activated with lipopolysaccharide (LPS)...
January 2017: Prostaglandins, Leukotrienes, and Essential Fatty Acids
https://www.readbyqxmd.com/read/28087531/salivary-gluten-degradation-and-oral-microbial-profiles-in-health-and-celiac-disease
#8
Na Tian, Lina Faller, Daniel A Leffler, Ciaran P Kelly, Joshua Hansen, Jos A Bosch, Guoxian Wei, Bruce J Paster, Detlef Schuppan, Eva J Helmerhorst
: Celiac disease (CD) is a chronic immune-mediated enteropathy induced by dietary gluten in genetically predisposed individuals. Saliva harbors the second highest bacterial load of the GI tract after the colon. Moreover, saliva contains gluten-degrading enzymes produced by oral bacteria that may modify gluten processing in the intestine and susceptibility to celiac disease (CD). AIM: To investigate salivary enzymatic activities and oral microbial profiles in healthy subjects vs patients with classical and refractory CD...
January 13, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28087321/enteric-nervous-system-development-a-crest-cell-s-journey-from-neural-tube-to-colon
#9
REVIEW
Nandor Nagy, Allan M Goldstein
The enteric nervous system (ENS) is comprised of a network of neurons and glial cells that are responsible for coordinating many aspects of gastrointestinal (GI) function. These cells arise from the neural crest, migrate to the gut, and then continue their journey to colonize the entire length of the GI tract. Our understanding of the molecular and cellular events that regulate these processes has advanced significantly over the past several decades, in large part facilitated by the use of rodents, avians, and zebrafish as model systems to dissect the signals and pathways involved...
January 10, 2017: Seminars in Cell & Developmental Biology
https://www.readbyqxmd.com/read/28081325/plasma-levels-of-serotonin-gastrointestinal-symptoms-and-sleep-problems-in-children-with-autism
#10
Sorayya Kheirouri, Parinaz Kalejahi, Seyyed Gholamreza Noorazar
BACKGROUND/AIM: Autism is a neurodevelopmental disorder identified with higher frequency of serotonin abnormalities and gastrointestinal (GI) and sleep problems. This study aimed to evaluate the plasma levels of serotonin, GI symptoms, and sleep problems, and their relationship with autism severity in children with autism. MATERIALS AND METHODS: Thirty-five children with autism and 31 healthy subjects were studied. GI problems, sleep disorders, and severity of disorder were assessed...
December 20, 2016: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/28079832/usefulness-of-low-dose-chest-ct-for-initial-evaluation-of-blunt-chest-trauma
#11
Sung Jung Kim, Anjali Basnyat Bista, Young Gi Min, Eun Young Kim, Kyung Joo Park, Doo Kyoung Kang, Joo Sung Sun
We aimed to compare the diagnostic performance and inter-observer consistency between low dose chest CT (LDCT) and standard dose chest CT (SDCT) in the patients with blunt chest trauma.A total of 69 patients who met criteria indicative of blunt chest trauma (77% of male; age range, 16-85) were enrolled. All patients underwent LDCT without intravenous (IV) contrast and SDCT with IV contrast using parameters as following: LDCT, 40 mAs with automatic tube current modulation (ATCM) and 100 kVp (BMI <25, n = 51) or 120 kVp (BMI>25, n = 18); SDCT, 180 mAs with ATCM and 120 kVp...
January 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28079827/differentiating-malignant-from-benign-gastric-mucosal-lesions-with-quantitative-analysis-in-dual-energy-spectral-computed-tomography-initial-experience
#12
Xiaoyan Meng, Cheng Ni, Yaqi Shen, Xuemei Hu, Xiao Chen, Zhen Li, Daoyu Hu
To investigate the value of quantitative analysis in dual energy spectral computed tomography (DESCT) for differentiating malignant gastric mucosal lesions from benign gastric mucosal lesions (including gastric inflammation [GI] and normal gastric mucosa [NGM]). This study was approved by the ethics committee, and all patients provided written informed consent. A total of 161 consecutive patients (63 with gastric cancer [GC], 48 with GI, and 50 with NGM) who underwent dual-phase contrast enhanced DESCT scans in the arterial phase (AP) and portal venous phase (PVP) were included in this study...
January 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28079270/treatment-of-adults-with-idiopathic-recurrent-pericarditis-novel-use-of-immunotherapy
#13
Nicholas C Schwier, Genevieve Hale, Marie L Davies
Idiopathic recurrent pericarditis (IRP) can be challenging to treat. Even after guideline-directed, first-line treatment consisting of aspirin (ASA) or a nonsteroidal antiinflammatory drug (NSAID) in combination with colchicine therapy, recurrences still occur in greater than 20% of patients. Many patients then require treatment with long-term corticosteroids, which is not a favorable option due to their short- and long-term adverse effects. Since it is theorized that the pathophysiology of IRP may possess autoimmune sequelae, the use of immunotherapy for the treatment of IRP has emerged...
January 12, 2017: Pharmacotherapy
https://www.readbyqxmd.com/read/28078679/diet-induced-dysmotility-and-neuropathy-in-the-gut-precedes-endotoxemia-and-metabolic-syndrome-the-chicken-and-the-egg-revisited
#14
Yvonne Elikplim Akua Nyavor, Onesmo Begira Balemba
Neuropathy of the enteric nervous system (ENS) is one of the major underlying causes of debilitating gastrointestinal (GI) motility disorders in diabetic patients. This article is protected by copyright. All rights reserved.
January 11, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28078463/endoscopic-vacuum-therapy-for-various-defects-of-the-upper-gastrointestinal-tract
#15
Florian Kuehn, Gunnar Loske, Leif Schiffmann, Michael Gock, Ernst Klar
BACKGROUND: Postoperative, iatrogenic or spontaneous upper gastrointestinal defects result in significant morbidity and mortality of the patients. In the last few years, endoscopic vacuum therapy (EVT) has been recognized as a new promising method for repairing upper gastrointestinal defects of different etiology. However, probably due to insufficient data and no commercially available system for EVT of the upper gastrointestinal tract, until the end of 2014, covering of esophageal defects with self-expanding metal stents (SEMS) were still the mainstay of endoscopic therapy...
January 11, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28078126/gastrointestinal-lymphoma-in-western-algeria-pattern-of-distribution-and-histological-subtypes-retrospective-study
#16
Soumia Zeggai, Noria Harir, Abdenacer Tou, Miloud Medjamia, Khaira Guenaoui
BACKGROUND: Primary gastrointestinal (GI) lymphomas (GIL) are uncommon diseases that can involve the whole GI tract. Considerable variation exists in the literature with respect to incidence of the various histological subtypes and sites of involvement. This study was undertaken to establish the anatomic distribution, histological subtypes and sites of GI lymphomas of patients from Western Algeria. METHODS: The case records of 58 consecutive patients with GIL diagnosed at the Pathologies Departments of Algerian west region (the Military Hospital of Oran city and the Central University Hospital of Sidi Bel Abbes city) from January 2006 to December 2013 were retrospectively evaluated for epidemiology and histopathology report...
December 2016: Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/28077816/incidence-of-atrial-tachyarrhythmias-in-patients-with-early-repolarization-syndrome
#17
Ki Won Hwang, Gi-Byoung Nam, Junhee Han, Yong Giun Kim, Hyung Oh Choi, Jun Kim, Kee-Joon Choi, You-Ho Kim
Atrial tachyarrhythmias (ATAs) occur in a significant proportion of Brugada syndrome (BrS) patients and are often an important cause of inappropriate shocks. The aim of this retrospective study was to evaluate the incidence of ATAs and ATA-induced inappropriate shocks in early repolarization syndrome (ERS) patients as compared to BrS patients.We analyzed data from 20 consecutive patients who were diagnosed with ERS and compared them with patients diagnosed with BrS (n = 31). Clinical and ICD interrogation data were collected and analyzed for all events with ICD shocks...
January 11, 2017: International Heart Journal
https://www.readbyqxmd.com/read/28077563/the-bioc-biogrid-corpus-full-text-articles-annotated-for-curation-of-protein-protein-and-genetic-interactions
#18
Rezarta Islamaj Doğan, Sun Kim, Andrew Chatr-Aryamontri, Christie S Chang, Rose Oughtred, Jennifer Rust, W John Wilbur, Donald C Comeau, Kara Dolinski, Mike Tyers
A great deal of information on the molecular genetics and biochemistry of model organisms has been reported in the scientific literature. However, this data is typically described in free text form and is not readily amenable to computational analyses. To this end, the BioGRID database systematically curates the biomedical literature for genetic and protein interaction data. This data is provided in a standardized computationally tractable format and includes structured annotation of experimental evidence. BioGRID curation necessarily involves substantial human effort by expert curators who must read each publication to extract the relevant information...
2017: Database: the Journal of Biological Databases and Curation
https://www.readbyqxmd.com/read/28076944/rice-variety-and-processing-contribution-to-glycaemic-response
#19
T U Nisanka, S Ekanayake
Introduction: Glycaemic index (GI) of different varieties of rice (Oryza sativa L.) commonly consumed in Sri Lanka are not widely studied even though it is the staple food. Objectives: To determine the proximate compositions and the GI of three different rice meals, namely Bg 360 Samba (raw), Basmati At 405 (raw) and parboiled Nadu Bg 352. Methods: The study was a randomised cross over study using healthy volunteers (n=11). GI was determined as the ratio between the incremental areas under curve obtained for the test food and the standard glucose (WHO/FAO method)...
30, 2016: Ceylon Medical Journal
https://www.readbyqxmd.com/read/28074953/gastrointestinal-interactions-absorption-splanchnic-metabolism-and-pharmacokinetics-of-orally-ingested-phenolic-compounds
#20
REVIEW
J Abraham Domínguez-Avila, Abraham Wall-Medrano, Gustavo R Velderrain-Rodríguez, C-Y Oliver Chen, Norma Julieta Salazar-López, Maribel Robles-Sánchez, Gustavo A González-Aguilar
The positive health effects of phenolic compounds (PCs) have been extensively reported in the literature. An understanding of their bioaccessibility and bioavailability is essential for the elucidation of their health benefits. Before reaching circulation and exerting bioactions in target tissues, numerous interactions take place before and during digestion with either the plant or host's macromolecules that directly impact the organism and modulate their own bioaccessibility and bioavailability. The present work is focused on the gastrointestinal (GI) interactions that are relevant to the absorption and metabolism of PCs and how these interactions impact their pharmacokinetic profiles...
January 11, 2017: Food & Function
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