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Effects of Zinc and Menthol-Based Diets on Co-Selection of Antibiotic Resistance Among E
animals Article Effects of Zinc and Menthol-Based Diets on Co-Selection of Antibiotic Resistance among E. coli and Enterococcus spp. in Beef Cattle Sarah A. Murray 1, Raghavendra G. Amachawadi 2 , Keri N. Norman 3 , Sara D. Lawhon 1, Tiruvoor G. Nagaraja 4 , James S. Drouillard 5 and Harvey M. Scott 1,* 1 Department of Veterinary Pathobiology, Texas A&M University, College Station, TX 77843, USA; [email protected] (S.A.M.); [email protected] (S.D.L.) 2 Department of Clinical Sciences, Kansas State University, Manhattan, KS 66506, USA; [email protected] 3 Department of Veterinary Integrative Biosciences, Texas A&M University, College Station, TX 77843, USA; [email protected] 4 Department of Diagnostic Medicine and Pathobiology, Kansas State University, Manhattan, KS 66506, USA; [email protected] 5 Department of Animal Sciences and Industry, Kansas State University, Manhattan, KS 66506, USA; [email protected] * Correspondence: [email protected]; Tel.: +1-(979)-847-6197 Simple Summary: As antibiotic resistance increases globally, alternatives to antibiotics are increas- ingly being investigated as growth promoters, as well as preventive and therapeutic agents, partic- ularly in agriculture. Equally important is the need for investigation into the effects of antibiotic Citation: Murray, S.A.; Amachawadi, alternatives on antibiotic resistance and particularly their risk for co-selection. In this study, we R.G.; Norman, K.N.; Lawhon, S.D.; explored the prevalence of antibiotic-resistant Escherichia coli and Enterococcus spp. in cattle fed zinc, Nagaraja, T.G.; Drouillard, J.S.; Scott, menthol or a combination of the two. -
Genomic and Evolutionary Insights
CORE Metadata, citation and similar papers at core.ac.uk Provided by Apollo GBE Preterm Infant-Associated Clostridium tertium, Clostridium cadaveris,andClostridium paraputrificum Strains: Genomic and Evolutionary Insights Raymond Kiu1,2, Shabhonam Caim1, Cristina Alcon-Giner1, Gusztav Belteki3,PaulClarke4, Derek Pickard5, Gordon Dougan5,andLindsayJ.Hall1,* 1The Gut Health and Food Safety Programme, Quadram Institute Bioscience, Norwich Research Park, Norwich, United Kingdom 2Norwich Medical School, Norwich Research Park, University of East Anglia, Norwich, United Kingdom 3Neonatal Intensive Care Unit, The Rosie Hospital, Cambridge University Hospitals NHS Foundation Trust, United Kingdom 4Neonatal Intensive Care Unit, Norfolk and Norwich University Hospitals NHS Foundation Trust, Norwich, United Kingdom 5Wellcome Trust Sanger Institute, Wellcome Genome Campus, Hinxton, United Kingdom *Corresponding author: E-mail: [email protected]. Accepted: September 28, 2017 Data deposition: This project has been deposited at European Nucleotide Archive (EMBL-EBI) under the accession PRJEB22142. Bacterial strain deposition: Newly sequenced strains are deposited at National Collection of Type Cultures (NCTC; a culture depository of Public Health England). Abstract Clostridium species (particularly Clostridium difficile, Clostridium botulinum, Clostridium tetani and Clostridium perfringens)are associated with a range of human and animal diseases. Several other species including Clostridium tertium, Clostridium cadaveris, and Clostridium paraputrificum have also been linked with sporadic human infections, however there is very limited, or in some cases, no genomic information publicly available. Thus, we isolated one C. tertium strain, one C. cadaveris strain and three C. paraputrificum strains from preterm infants residing within neonatal intensive care units and performed Whole Genome Sequencing (WGS) using Illumina HiSeq. In this report, we announce the open availability of the draft genomes: C. -
Potential for and Distribution of Enzymatic Biodegradation of Polystyrene by Environmental Microorganisms
materials Communication Potential for and Distribution of Enzymatic Biodegradation of Polystyrene by Environmental Microorganisms Liyuan Hou and Erica L.-W. Majumder * Department of Chemistry, SUNY College of Environmental Science and Forestry, Syracuse, NY 13210, USA; [email protected] * Correspondence: [email protected] or [email protected]; Tel.: +1-3154706854 Abstract: Polystyrene (PS) is one of the main polymer types of plastic wastes and is known to be resistant to biodegradation, resulting in PS waste persistence in the environment. Although previous studies have reported that some microorganisms can degrade PS, enzymes and mechanisms of microorganism PS biodegradation are still unknown. In this study, we summarized microbial species that have been identified to degrade PS. By screening the available genome information of microorganisms that have been reported to degrade PS for enzymes with functional potential to depolymerize PS, we predicted target PS-degrading enzymes. We found that cytochrome P4500s, alkane hydroxylases and monooxygenases ranked as the top potential enzyme classes that can degrade PS since they can break C–C bonds. Ring-hydroxylating dioxygenases may be able to break the side-chain of PS and oxidize the aromatic ring compounds generated from the decomposition of PS. These target enzymes were distributed in Proteobacteria, Actinobacteria, Bacteroidetes, and Firmicutes, suggesting a broad potential for PS biodegradation in various earth environments and microbiomes. Our results provide insight into the enzymatic degradation of PS and suggestions for realizing the biodegradation of this recalcitrant plastic. Citation: Hou, L.; Majumder, E.L. Keywords: plastics; polystyrene biodegradation; enzymatic biodegradation; monooxygenase; alkane Potential for and Distribution of hydroxylase; cytochrome P450 Enzymatic Biodegradation of Polystyrene by Environmental Microorganisms. -
Non-Commercial Use Only
Infectious Disease Reports 2020; volume 12:8376 Peritonitis from facultative presenting with Citrobacter freundii peri- anaerobic gram-negative bacilli tonitis. Correspondence: Sreedhar Adapa, The Citrobacter freundii (C. freundii) is a Nephrology Group, 568 East Herndon Avenue likely due to translocation of motile, facultative anaerobe, non-sporing #201, Fresno, CA 93720, USA. bacteria from gut in a patient gram-negative bacilli colonize in the gas- Tel.: 5592286600 - Fax: 5592263709. undergoing peritoneal dialysis trointestinal tract of humans and other ani- E-mail: [email protected] mals. It is also found in water, soil, and Key words: Citrobacter freundii, peritonitis, food.1 Werkman and Gillen discovered Sreedhar Adapa,1 Srikanth Naramala,2 SPICE organisms, peritoneal dialysis. 3 genus Citrobacter in 1932 and the organism Harmandeep Singh Tiwana, uses citrate a sole carbon source for the Contributions: All authors contributed equally 4 4 Niraj Patel, Raman Verma, energy source and hence derives its name.2 to the text of the manuscript and the literature 5 Narayana Murty Koduri, Venu Madhav C. freundii is hydrogen sulfide positive, review. SA was responsible for the original Konala6 indole negative, adonitol negative, and mal- diagnosis and treatment. Manuscript prepara- 3 tion and modification by VM. 1The Nephrology group, Fresno, CA; onate negative in character. Peritonitis 2 Department of Rheumatology, from gram-negative organisms frequently Conflict of interest: The authors declare no Adventist Medical Center, Hanford, CA; results in hospitalization, catheter loss, dial- potential conflict of interest. 3 ysis modality change, and mortality. These Department of Internal Medicine, infections are hard to treat because of Funding: None. Adventist Medical Center, Hanford, CA; biofilm formation, which makes them less 4Department of Internal Medicine, susceptible to antibiotics. -
WO 2018/064165 A2 (.Pdf)
(12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (10) International Publication Number (43) International Publication Date WO 2018/064165 A2 05 April 2018 (05.04.2018) W !P O PCT (51) International Patent Classification: Published: A61K 35/74 (20 15.0 1) C12N 1/21 (2006 .01) — without international search report and to be republished (21) International Application Number: upon receipt of that report (Rule 48.2(g)) PCT/US2017/053717 — with sequence listing part of description (Rule 5.2(a)) (22) International Filing Date: 27 September 2017 (27.09.2017) (25) Filing Language: English (26) Publication Langi English (30) Priority Data: 62/400,372 27 September 2016 (27.09.2016) US 62/508,885 19 May 2017 (19.05.2017) US 62/557,566 12 September 2017 (12.09.2017) US (71) Applicant: BOARD OF REGENTS, THE UNIVERSI¬ TY OF TEXAS SYSTEM [US/US]; 210 West 7th St., Austin, TX 78701 (US). (72) Inventors: WARGO, Jennifer; 1814 Bissonnet St., Hous ton, TX 77005 (US). GOPALAKRISHNAN, Vanch- eswaran; 7900 Cambridge, Apt. 10-lb, Houston, TX 77054 (US). (74) Agent: BYRD, Marshall, P.; Parker Highlander PLLC, 1120 S. Capital Of Texas Highway, Bldg. One, Suite 200, Austin, TX 78746 (US). (81) Designated States (unless otherwise indicated, for every kind of national protection available): AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. -
A Metagenomic Β-Glucuronidase Uncovers a Core Adaptive Function of the Human Intestinal Microbiome
A metagenomic β-glucuronidase uncovers a core adaptive function of the human intestinal microbiome Karine Gloux, Olivier Berteau, Hanane El oumami, Fabienne Béguet, Marion Leclerc, and Joël Doré1 Institut National de la Recherche Agronomique, Unité Mixte de Recherche 1319 Micalis, F-78352 Jouy en Josas, France Edited by Todd R. Klaenhammer, North Carolina State University, Raleigh, NC, and approved June 1, 2010 (received for review February 4, 2010) In the human gastrointestinal tract, bacterial β-D-glucuronidases (BG; XIVa), major reservoirs of BG-positive bacteria (11), are dys- E.C. 3.2.1.31) are involved both in xenobiotic metabolism and in some biosis markers in Crohn’s disease (12–15) and in intestinal carci- of the beneficial effects of dietary compounds. Despite their biolog- nogenesis (16). Nevertheless, the relative contribution of bacterial ical significance, investigations are hampered by the fact that only strains to the global intestinal BG activity remains unclear, and a few BGs have so far been studied. A functional metagenomic the molecular bases are essentially unknown. approach was therefore performed on intestinal metagenomic In the human digestive tract, bacterial BGs are known to be libraries using chromogenic glucuronides as probes. Using this strat- distributed among the Enterobacteriaceae family in some Firmi- egy, 19 positive metagenomic clones were identified but only one cutes genera (Lactobacillus, Streptococcus, Clostridium, Rumino- exhibited strong β-D-glucuronidase activity when subcloned into an coccus, Roseburia, and Faecalibacterium) and in a specific species expression vector. The cloned gene encoded a β-D-glucuronidase of Actinobacteria (Bifidobacterium dentium) (11, 17, 18). On (called H11G11-BG) that had distant amino acid sequence homolo- the basis of their sequence, BGs are highly homologous to gies and an additional C terminus domain compared with known β-galactosidases and only a few of them have been investigated β fi -D-glucuronidases. -
Composition and Drivers of Gut Microbial Communities in Arctic-Breeding Shorebirds
fmicb-10-02258 October 9, 2019 Time: 12:10 # 1 ORIGINAL RESEARCH published: 09 October 2019 doi: 10.3389/fmicb.2019.02258 Composition and Drivers of Gut Microbial Communities in Arctic-Breeding Shorebirds Kirsten Grond1*†, Jorge W. Santo Domingo2, Richard B. Lanctot3, Ari Jumpponen1, 4 5 6 7 Edited by: Rebecca L. Bentzen , Megan L. Boldenow , Stephen C. Brown , Bruce Casler , 8 9 10 5 Biswarup Sen, Jenny A. Cunningham , Andrew C. Doll , Scott Freeman , Brooke L. Hill , Tianjin University, China Steven J. Kendall10, Eunbi Kwon11, Joseph R. Liebezeit12, Lisa Pirie-Dominix13, Jennie Rausch14 and Brett K. Sandercock15 Reviewed by: Debmalya Barh, 1 Division of Biology, Kansas State University, Manhattan, KS, United States, 2 U.S. Environmental Protection Agency, Federal University of Minas Gerais, Cincinnati, OH, United States, 3 Migratory Bird Management, U.S. Fish & Wildlife Service, Anchorage, AK, United States, Brazil 4 Wildlife Conservation Society, Fairbanks, AK, United States, 5 Department of Biology and Wildlife, University of Alaska David William Waite, Fairbanks, Fairbanks, AK, United States, 6 Manomet Inc., Saxtons River, VT, United States, 7 Independent Researcher, The University of Auckland, Nehalem, OR, United States, 8 Department of Fisheries and Wildlife Sciences, University of Missouri, Columbia, MO, New Zealand United States, 9 Denver Museum of Nature & Science, Denver, CO, United States, 10 Arctic National Wildlife Refuge, U.S. *Correspondence: Fish & Wildlife Service, Fairbanks, AK, United States, 11 Department of Fish and -
Corynebacterium Species Rarely Cause Orthopedic Infections
Zurich Open Repository and Archive University of Zurich Main Library Strickhofstrasse 39 CH-8057 Zurich www.zora.uzh.ch Year: 2018 Corynebacterium species rarely cause orthopedic infections Kalt, Fabian ; Schulthess, Bettina ; Sidler, Fabian ; Herren, Sebastian ; Fucentese, Sandro F ; Zingg, Patrick O ; Berli, Martin ; Zinkernagel, Annelies S ; Zbinden, Reinhard ; Achermann, Yvonne Abstract: Corynebacterium spp. are rarely considered as pathogens but data in orthopedic infections are sparse. Therefore, we asked how often Corynebacterium spp. caused an infection in a defined cohort of orthopedic patients with a positive culture. In addition, we aimed to determine the species variety and susceptibility of isolated strains in regards to potential treatment strategies. Between 2006 and 2015, we retrospectively assessed all Corynebacterium sp. bone and joint cultures from an orthopedic ward. The isolates were considered as relevant indicating an infection if the same Corynebacterium sp. was present in at least two samples. We found 97 orthopedic cases with isolation of Corynebacterium spp. (128 positive samples), mainly Corynebacterium tuberculostearicum (n=26), Corynebacterium amycolatum (n=17), Corynebacterium striatum (n=13), and Corynebacterium afermentans (n=11). Compared to a cohort of positive blood cultures, we found significantly more C. striatum and C. tuberculostearicum but no C. jeikeium cases. Only 16 cases out 66 cases (24.2%) with an available diagnostic set of at least 2 samples had an infection. Antibiotic susceptibility testing (AST) of different antibiotics showed various susceptibility results except for vancomycin and linezolid with a 100% susceptibility rate. Rates of susceptibility of corynebacteria isolated from orthopedic samples and of isolates from blood cultures were comparable. In conclusion, our study results confirmed that Corynebacterium sp. -
AR-123: 2017 Kentucky Agricultural Experiment Station Annual Report
University of Kentucky College of Agriculture, Food and Environment AR-130 Agricultural Experiment Station The Kentucky Agricultural Experiment Station 130th Annual Report 2017 Agricultural Kentucky Tobacco Research and Development Center | Veterinary Diagnostic Laboratory | Division of Regulatory Services | Research and Education Center Experiment Station Robinson Forest | Robinson Center for Appalachian Resource Sustainability | University of Kentucky Superfund Research Center | Equine Programs To His Excellency The Honorable Andy Beshear Governor of Kentucky I herewith submit the one hundred and thirtieth annual report of the Kentucky Agricultural Experiment Station for the period ending December 31, 2017. This is done in accordance with an act of Congress, approved March 2, 1887, titled “An act to establish Agricultural Experiment Stations, in connection with the Agricultural Colleges established in the several states under the provisions of an act approved July 2, 1862, and under the acts supplementary thereto,” and also the act of the Kentucky State Legislature, approved February 20, 1888, accepting the provisions of the act of Congress. Very respectfully, Rick Bennett Associate Dean for Research Director, Agricultural Experiment Station Lexington, Kentucky Lexington, Kentucky May 20, 2021 Experiment Station–Affiliated Departments and Centers Agricultural Economics Animal and Food Sciences Biosystems and Agricultural Engineering Community and Leadership Development Dietetics and Human Nutrition Entomology Family Sciences Forestry -
The Isolation of Novel Lachnospiraceae Strains and the Evaluation of Their Potential Roles in Colonization Resistance Against Clostridium Difficile
The isolation of novel Lachnospiraceae strains and the evaluation of their potential roles in colonization resistance against Clostridium difficile Diane Yuan Wang Honors Thesis in Biology Department of Ecology and Evolutionary Biology College of Literature, Science, & the Arts University of Michigan, Ann Arbor April 1st, 2014 Sponsor: Vincent B. Young, M.D., Ph.D. Associate Professor of Internal Medicine Associate Professor of Microbiology and Immunology Medical School Co-Sponsor: Aaron A. King, Ph.D. Associate Professor of Ecology & Evolutionary Associate Professor of Mathematics College of Literature, Science, & the Arts Reader: Blaise R. Boles, Ph.D. Assistant Professor of Molecular, Cellular and Developmental Biology College of Literature, Science, & the Arts 1 Table of Contents Abstract 3 Introduction 4 Clostridium difficile 4 Colonization Resistance 5 Lachnospiraceae 6 Objectives 7 Materials & Methods 9 Sample Collection 9 Bacterial Isolation and Selective Growth Conditions 9 Design of Lachnospiraceae 16S rRNA-encoding gene primers 9 DNA extraction and 16S ribosomal rRNA-encoding gene sequencing 10 Phylogenetic analyses 11 Direct inhibition 11 Bile salt hydrolase (BSH) detection 12 PCR assay for bile acid 7α-dehydroxylase detection 12 Tables & Figures Table 1 13 Table 2 15 Table 3 21 Table 4 25 Figure 1 16 Figure 2 19 Figure 3 20 Figure 4 24 Figure 5 26 Results 14 Isolation of novel Lachnospiraceae strains 14 Direct inhibition 17 Bile acid physiology 22 Discussion 27 Acknowledgments 33 References 34 2 Abstract Background: Antibiotic disruption of the gastrointestinal tract’s indigenous microbiota can lead to one of the most common nosocomial infections, Clostridium difficile, which has an annual cost exceeding $4.8 billion dollars. -
Effects of Captivity and Artificial Breeding On
www.nature.com/scientificreports OPEN Effects of captivity and artificial breeding on microbiota in feces of the red-crowned crane (Grus Received: 29 September 2015 Accepted: 26 August 2016 japonensis) Published: 15 September 2016 Yuwei Xie1, Pu Xia1, Hui Wang2, Hongxia Yu1, John P. Giesy1,3,4,5, Yimin Zhang6, Miguel A. Mora7 & Xiaowei Zhang1 Reintroduction of the threatened red-crowned crane has been unsuccessful. Although gut microbiota correlates with host health, there is little information on gut microbiota of cranes under different conservation strategies. The study examined effects of captivity, artificial breeding and life stage on gut microbiota of red-crown cranes. The gut microbiotas of wild, captive adolescent, captive adult, artificially bred adolescent and artificially bred adult cranes were characterized by next-generation sequencing of 16S rRNA gene amplicons. The gut microbiotas were dominated by three phyla: Firmicutes (62.9%), Proteobacteria (29.9%) and Fusobacteria (9.6%). Bacilli dominated the ‘core’ community consisting of 198 operational taxonomic units (OTUs). Both captivity and artificial breeding influenced the structures and diversities microbiota of the gut. Especially, wild cranes had distinct compositions of gut microbiota from captive and artificially bred cranes. The greatest alpha diversity was found in captive cranes, while wild cranes had the least. According to the results of ordination analysis, influences of captivity and artificial breeding were greater than that of life stage. Overall, captivity and artificial breeding influenced the gut microbiota, potentially due to changes in diet, vaccination, antibiotics and living conditions. Metagenomics can serve as a supplementary non-invasive screening tool for disease control. According to the Worldwatch Institute, populations of some avian species are currently declining worldwide, with 1,200 species facing extinction in the next century1. -
Corynebacterium Bovis: a Rare Case of Persistent Bacterial Keratitis and Corneal Perforation
Open Access Case Report DOI: 10.7759/cureus.16913 Corynebacterium Bovis: A Rare Case of Persistent Bacterial Keratitis and Corneal Perforation Mohammed Elsheikh 1 , Ahmed Elsayed 1 , Nicholas Bennett 1 , Martin Connor 2 1. Ophthalmology, NHS Dumfries & Galloway, Dumfries, GBR 2. Microbiology, NHS Dumfries & Galloway, Dumfries, GBR Corresponding author: Mohammed Elsheikh, [email protected] Abstract We report a rare case of severe, non-contact lens-related Corynebacterium bovis corneal infection on a background of viral keratitis, resulting in corneal abscess formation with subsequent corneal perforation. An 89-year-old Caucasian lady presented with a significant epithelial defect and a dense stromal infiltrates on a background of herpes zoster keratitis, ultimately resulting in corneal perforation. Enrichment culture obtained from corneal scraping isolated the unusual organism Corynebacterium bovis. This was treated with a combination of culture-directed, targeted course of antibiotics and surgical interventions. To the best of our knowledge, this is the first reported case of profuse bacterial keratitis secondary to Corynebacterium bovis infiltration, on a background of viral keratitis, resulting in corneal abscess formation and subsequent perforation. This report highlights this rare bacterium’s characteristics including its pathogenicity in causing severe corneal disease, particularly in immunosuppressed environments such as in this case, apparent antibiotic sensitivities & resistance, and potential transmission route. Categories: Ophthalmology, Infectious Disease Keywords: corynebacterium bovis, cornea, microbial keratitis, corneal perforation, corneal infection Introduction Corynebacterium species are frequently isolated on the conjunctiva of healthy adults and are thus increasingly regarded as non-pathogenic bacteria [1,2]. Recently, however, there have been increasing reports detailing the pathogenicity of Corynebacterium species isolated on ocular surfaces, with immunosuppression representing a risk factor [3-6].