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https://www.readbyqxmd.com/read/28449427/trichuris-trichiura-infection-in-north-korean-defector-resulted-in-chronic-abdominal-pain-and-growth-retardation
#1
Jong Bin Kim, Kwang Il Seo, Won Moon
Trichuris trichiura infection is a common helminth infection, which is transmitted via soil, with worldwide distribution, especially in rural areas of developing countries. Occasionally, sporadic cases occur in non-endemic, developed areas due to the widespread of immigration. We experienced a case of Trichuris dysentery syndrome in a young North Korean defector, who had been suffering from chronic abdominal pain for 10 years. He is relatively short and thin compared with his older brother. Unexpectedly, the diagnosis, made by a colonoscopy, revealed numerous, small, white, and gently moving worms at the cecum and ascending colon...
April 25, 2017: Korean Journal of Gastroenterology, Taehan Sohwagi Hakhoe Chi
https://www.readbyqxmd.com/read/28449421/-the-role-of-micrornas-in-colorectal-cancer
#2
REVIEW
Sang Wook Kim
Colorectal cancer (CRC) is one of the leading causes of cancer related deaths in the world. Many oncogenes and tumor suppressor genes are involved in the development of CRC. MicroRNAs (miRNAs) are a class of small, non-coding, endogenous RNAs in animals and plants. Recent studies have shown that miRNAs are associated with the mediation process of tumorigenesis, including inflammation, cell cycle, stress response, differentiation, apoptosis, migration, and invasion in cancer. These miRNAs have been linked to the development of CRC and recently studied as new potential biomarkers in the diagnosis and treatment for CRC...
April 25, 2017: Korean Journal of Gastroenterology, Taehan Sohwagi Hakhoe Chi
https://www.readbyqxmd.com/read/28449361/systematic-review-with-meta-analysis-proximal-disease-extension-in-limited-ulcerative-colitis
#3
REVIEW
G Roda, N Narula, R Pinotti, A Skamnelos, K H Katsanos, R Ungaro, J Burisch, J Torres, J-F Colombel
BACKGROUND: Disease extent in ulcerative colitis is one of the major factors determining prognosis over the long-term. Disease extent is dynamic and a proportion of patients presenting with limited disease progress to more extensive forms of disease over time. AIM: To perform a systematic review and meta-analysis of epidemiological studies reporting on extension of ulcerative colitis to determine frequency of disease extension in patients with limited ulcerative colitis at diagnosis...
April 27, 2017: Alimentary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28449338/metformin-use-and-the-risk-of-colorectal-adenoma-a-systematic-review-and-meta-analysis
#4
Yoon Suk Jung, Chan Hyuk Park, Chang Soo Eun, Dong Il Park, Dong Soo Han
BACKGROUND AND AIM: Although it is known that metformin can reduce risk of colorectal cancer, it is unclear whether it protects against colorectal adenoma. METHODS: This study conducted a systematic literature search on MEDLINE, EMBASE, and the Cochrane Library using the primary keywords "colorectal," "colon," "rectal," "rectum," "adenoma," "polyp," "neoplasia," "neoplasm," "metformin," and "diabetes." Studies were included if they evaluated the association between metformin use and colorectal adenoma and reported odds ratios (ORs) or provided data from which these could be estimated...
May 2017: Journal of Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28449118/polyphosphate-accumulating-bacterial-community-colonizing-the-calcium-bodies-of-terrestrial-isopod-crustaceans-titanethes-albus-and-hyloniscus-riparius
#5
Rok Kostanjšek, Vittori Miloš, Vesna Srot, Peter A van Aken, Štrus Jasna
Terrestrial isopods from the group Trichoniscidae accumulate calcium in specialized organs, known as the calcium bodies. These consist of two pairs of epithelial sacs located alongside the digestive system. These organs contain various forms of calcium and constantly present bacteria. To elucidate their origin and role, we analyzed the bacteria of the calcium bodies in the cave-dwelling isopod Titanethes albus and the epigean species Hyloniscus riparius, by microscopy, histochemistry, energy dispersive X-ray spectrometry, 16S rRNA analysis and in situ hybridization...
April 25, 2017: FEMS Microbiology Ecology
https://www.readbyqxmd.com/read/28449055/primary-tumor-sidedness-has-an-impact-on-prognosis-and-treatment-outcome-in-metastatic-colorectal-cancer-results-from-two-randomized-first-line-panitumumab-studies
#6
N Boeckx, R Koukakis, K Op de Beeck, C Rolfo, G Van Camp, S Siena, J Tabernero, J-Y Douillard, T André, M Peeters
Background: : Previous studies have reported the prognostic impact of primary tumor sidedness in metastatic colorectal cancer (mCRC) and its influence on cetuximab efficacy. The present retrospective analysis of two panitumumab trials investigated a possible association between tumor sidedness and treatment efficacy in first-line mCRC patients with RAS wild-type (WT) primary tumors. Material and methods: Data from two randomized first-line panitumumab trials were analyzed for treatment outcomes by primary tumor sidedness for RAS WT patients...
April 25, 2017: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/28448936/composite-of-pah-degrading-endophytic-bacteria-reduces-contamination-and-health-risks-caused-by-pahs-in-vegetables
#7
Jian Wang, Juan Liu, Wanting Ling, Qingguo Huang, Yanzheng Gao
Vegetables accumulate polycyclic aromatic hydrocarbons (PAHs) at high concentrations when grown in contaminated sites. Inoculation with PAH-degrading endophytic bacteria (EBPAH) has been recognized as one of the most promising ways to remove PAHs from plant bodies; however, the performance of single endophytic bacteria is generally limited. This investigation used a composite of eight EBPAH to reduce the contamination and health risk posed by 16 EPA priority PAHs in vegetables including Chinese cabbage (Brassica chinensis L...
April 24, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28448771/geosmithia-associated-with-bark-beetles-and-woodborers-in-the-western-usa-taxonomic-diversity-and-vector-specificity
#8
Miroslav Kolařík, Jiri Hulcr, Ned Tisserat, Wilhelm De Beer, Martin Kostovčík, Zuzana Kolaříková, Steven J Seybold, David M Rizzo
Fungi in the genus Geosmithia (Ascomycota: Hypocreales) are frequent associates of bark beetles and woodborers that colonize hardwood and coniferous trees. One species, Geosmithia morbida, is an economically damaging invasive species. The authors surveyed the Geosmithia species of California and Colorado, USA, to (i) provide baseline data on taxonomy of Geosmithia and beetle vector specificity across the western USA; (ii) investigate the subcortical beetle fauna for alternative vectors of the invasive G. morbida; and (iii) interpret the community composition of this region within the emerging global biogeography of Geosmithia...
April 24, 2017: Mycologia
https://www.readbyqxmd.com/read/28448633/a-commensal-streptococcus-hijacks-a-pseudomonas-aeruginosa-exopolysaccharide-to-promote-biofilm-formation
#9
Jessica A Scoffield, Dingyu Duan, Fan Zhu, Hui Wu
Pseudomonas aeruginosa causes devastating chronic pulmonary infections in cystic fibrosis (CF) patients. Although the CF airway is inhabited by diverse species of microorganisms interlaced within a biofilm, many studies focus on the sole contribution of P. aeruginosa pathogenesis in CF morbidity. More recently, oral commensal streptococci have been identified as cohabitants of the CF lung, but few studies have explored the role these bacteria play within the CF biofilm. We examined the interaction between P...
April 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28448623/development-of-the-cutaneous-microbiome-in-the-preterm-infant-a-prospective-longitudinal-study
#10
Mohan Pammi, Jacqueline L O'Brien, Nadim J Ajami, Matthew C Wong, James Versalovic, Joseph F Petrosino
BACKGROUND: Neonatal sepsis in preterm infants is often due to organisms that colonize the skin including Staphylococcus spp. and Candida spp. Development and maturation of the skin microbiome in the neonatal period, especially in preterm infants, may be critical in preventing colonization with pathogens and subsequent progression to neonatal sepsis. Development of the skin microbiome in preterm infants or its determinants in the first 4 weeks of life has not been evaluated. METHODS: We evaluated the skin microbiome from three body sites, antecubital fossa, forehead and gluteal region, in a prospective cohort of 15 preterm (birth weight < 1500 g and < 32 weeks of gestation) and 15 term neonates...
2017: PloS One
https://www.readbyqxmd.com/read/28448619/pyridoxal-phosphate-synthases-pdxs-pdxt-are-required-for-actinobacillus-pleuropneumoniae-viability-stress-tolerance-and-virulence
#11
Fang Xie, Gang Li, Yalei Wang, Yanhe Zhang, Long Zhou, Chengcheng Wang, Shuanghong Liu, Siguo Liu, Chunlai Wang
Pyridoxal 5'-phosphate (PLP) is an essential cofactor for numerous enzymes involved in a diversity of cellular processes in living organisms. Previous analysis of the Actinobacillus pleuropneumoniae S-8 genome sequence revealed the presence of pdxS and pdxT genes, which are implicated in deoxyxylulose 5-phosphate (DXP)-independent pathway of PLP biosynthesis; however, little is known about their roles in A. pleuropneumoniae pathogenicity. Our data demonstrated that A. pleuropneumoniae could synthesize PLP by PdxS and PdxT enzymes...
2017: PloS One
https://www.readbyqxmd.com/read/28448580/sildenafil-normalizes-bowel-transit-in-preclinical-models-of-constipation
#12
Sarah K Sharman, Bianca N Islam, Yali Hou, Margaux Usry, Allison Bridges, Nagendra Singh, Subbaramiah Sridhar, Satish Rao, Darren D Browning
Guanylyl cyclase-C (GC-C) agonists increase cGMP levels in the intestinal epithelium to promote secretion. This process underlies the utility of exogenous GC-C agonists such as linaclotide for the treatment of chronic idiopathic constipation (CIC) and irritable bowel syndrome with constipation (IBS-C). Because GC-C agonists have limited use in pediatric patients, there is a need for alternative cGMP-elevating agents that are effective in the intestine. The present study aimed to determine whether the PDE-5 inhibitor sildenafil has similar effects as linaclotide on preclinical models of constipation...
2017: PloS One
https://www.readbyqxmd.com/read/28448473/transcriptomic-analysis-of-calcium-remodeling-in-colorectal-cancer
#13
Enrique Pérez-Riesgo, Lucía G Gutiérrez, Daniel Ubierna, Alberto Acedo, Mary P Moyer, Lucía Núñez, Carlos Villalobos
Colorectal cancer (CRC) cells undergo the remodeling of intracellular Ca(2+) homeostasis, which contributes to cancer hallmarks such as enhanced proliferation, invasion and survival. Ca(2+) remodeling includes critical changes in store-operated Ca(2+) entry (SOCE) and Ca(2+) store content. Some changes have been investigated at the molecular level. However, since nearly 100 genes are involved in intracellular Ca(2+) transport, a comprehensive view of Ca(2+) remodeling in CRC is lacking. We have used Next Generation Sequencing (NGS) to investigate differences in expression of 77 selected gene transcripts involved in intracellular Ca(2+) transport in CRC...
April 27, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28448444/role-of-the-vanins-myeloperoxidase-axis-in-colorectal-carcinogenesis
#14
REVIEW
Francesco Mariani, Luca Roncucci
The presence of chronic inflammation in the colonic mucosa leads to an increased risk of cancer. Among proteins involved in the regulation of mucosal inflammation and that may contribute both to structural damage of the intestinal mucosa and to intestinal carcinogenesis, there are myeloperoxidase (MPO) and vanins. The infiltration of colonic mucosa by neutrophils may promote carcinogenesis through MPO, a key enzyme contained in the lysosomes of neutrophils that regulates local inflammation and the generation of reactive oxygen species (ROS) and mutagenic species...
April 27, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28448269/circulating-cell-free-micrornas-as-clinical-cancer-biomarkers
#15
REVIEW
Virginie Armand-Labit, Anne Pradines
MicroRNAs (miRNAs) are non-coding small RNAs that are master regulators of genic expression and consequently of many cellular processes. But their expression is often deregulated in human tumors leading to cancer development. Recently miRNAs were discovered in body fluids (serum, plasma and others) and their levels have often been reported to be altered in patients. Circulating miRNAs became one of the most promising biomarkers in oncology for early diagnosis, prognosis and therapeutic response prediction. Here we describe the origins and roles of miRNAs, and summarize the most recent studies focusing on their usefulness as cancer biomarkers in lung, breast, colon, prostate, ovary cancers and melanoma...
April 27, 2017: Biomolecular Concepts
https://www.readbyqxmd.com/read/28448072/evaluation-of-ptgs2-expression-pik3ca-mutation-aspirin-use-and-colon-cancer-survival-in-a-population-based-cohort-study
#16
Ronan T Gray, Marie M Cantwell, Helen G Coleman, Maurice B Loughrey, Peter Bankhead, Stephen McQuaid, Roisin F O'Neill, Kenneth Arthur, Victoria Bingham, Claire McGready, Anna T Gavin, Chris R Cardwell, Brian T Johnston, Jacqueline A James, Peter W Hamilton, Manuel Salto-Tellez, Liam J Murray
OBJECTIVES: The association between aspirin use and improved survival after colorectal cancer diagnosis may be more pronounced in tumors that have PIK3CA mutations or high PTGS2 expression. However, the evidence of a difference in association by biomarker status lacks consistency. In this population-based colon cancer cohort study the interaction between these biomarkers, aspirin use, and survival was assessed. METHODS: The cohort consisted of 740 stage II and III colon cancer patients diagnosed between 2004 and 2008...
April 27, 2017: Clinical and Translational Gastroenterology
https://www.readbyqxmd.com/read/28447935/host-selected-mutations-converging-on-a-global-regulator-drive-an-adaptive-leap-by-bacteria-to-symbiosis
#17
Molly Sabrina Pankey, Randi L Foxall, Ian M Ster, Lauren A Perry, Brian M Schuster, Rachel A Donner, Matthew Coyle, Vaughn S Cooper, Cheryl A Whistler
Host immune and physical barriers protect against pathogens but also impede the establishment of essential symbiotic partnerships. To reveal mechanisms by which beneficial organisms adapt to circumvent host defenses, we experimentally evolved ecologically distinct bioluminescent Vibrio fischeri through Euprymna scolopes squid light organs. Serial squid passaging of bacteria produced eight distinct mutations in the binK sensor kinase gene that conferred an exceptional selective advantage demonstrated through both empirical and theoretical analysis...
April 27, 2017: ELife
https://www.readbyqxmd.com/read/28447887/cyclopiazonic-acid-is-a-pathogenicity-factor-for-aspergillus-flavus-and-a-promising-target-for-screening-germplasm-for-ear-rot-resistance
#18
Subbaiah C Chalivendra, Catherine DeRobertis, Perng-Kuang Chang, Kenneth E Damann
Aspergillus flavus, an opportunistic pathogen, contaminates maize and other key crops with carcinogenic aflatoxins (AFs). Besides AFs, A. flavus makes many more secondary metabolites (SMs) whose toxicity in insects or vertebrates has been studied. However, the role of SMs in the invasion of plant hosts by A. flavus remains to be investigated. Cyclopiazonic acid (CPA), a neurotoxic SM made by A. flavus, is a nanomolar inhibitor of endoplasmic reticulum calcium ATPases (ECAs) and a potent inducer of cell death in plants...
April 24, 2017: Molecular Plant-microbe Interactions: MPMI
https://www.readbyqxmd.com/read/28447624/wireless-power-transfer-to-millimeter-sized-gastrointestinal-electronics-validated-in-a-swine-model
#19
Abubakar Abid, Jonathan M O'Brien, Taylor Bensel, Cody Cleveland, Lucas Booth, Brian R Smith, Robert Langer, Giovanni Traverso
Electronic devices placed in the gastrointestinal (GI) tract for prolonged periods have the potential to transform clinical evaluation and treatment. One challenge to the deployment of such gastroresident electronics is the difficulty in powering millimeter-sized electronics devices without using batteries, which compromise biocompatibility and long-term residence. We examined the feasibility of leveraging mid-field wireless powering to transfer power from outside of the body to electronics at various locations along the GI tract...
April 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28447563/need-for-adjuvant-chemotherapy-after-colon-cancer-surgery-has-it-decreased
#20
Camilla Böckelman, Bengt Glimelius
No abstract text is available yet for this article.
May 2017: Acta Oncologica
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