Isolation and Identification of Aspergillus Spp . from Human And
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Characterization of Aspergillus Flavus Soil and Corn Kernel Populations from Eight Mississippi River States Jorge A
Louisiana State University LSU Digital Commons LSU Master's Theses Graduate School 11-13-2017 Characterization of Aspergillus Flavus Soil and Corn Kernel Populations From Eight Mississippi River States Jorge A. Reyes Pineda Louisiana State University and Agricultural and Mechanical College, [email protected] Follow this and additional works at: https://digitalcommons.lsu.edu/gradschool_theses Part of the Agricultural Science Commons, Agriculture Commons, and the Plant Pathology Commons Recommended Citation Reyes Pineda, Jorge A., "Characterization of Aspergillus Flavus Soil and Corn Kernel Populations From Eight Mississippi River States" (2017). LSU Master's Theses. 4350. https://digitalcommons.lsu.edu/gradschool_theses/4350 This Thesis is brought to you for free and open access by the Graduate School at LSU Digital Commons. It has been accepted for inclusion in LSU Master's Theses by an authorized graduate school editor of LSU Digital Commons. For more information, please contact [email protected]. CHARACTERIZATION OF ASPERGILLUS FLAVUS SOIL AND CORN KERNEL POPULATIONS FROM EIGHT MISSISSIPPI RIVER STATES A Thesis Submitted to the Graduate Faculty of the Louisiana State University Agricultural and Mechanical College in partial fulfillment of the requirements for the degree of Master of Science in The Department of Plant Pathology and Crop Physiology by Jorge A. Reyes Pineda B.S., Universidad Nacional de Agricultura-Honduras 2011 December 2017 ACKNOWLEDGEMENTS I first thank God who gave me the strength and perseverance to complete the requirements for this degree, and second, I thank my family. Without their unconditional support and encouragement, I would have never been able to achieve this endeavor. I would like to thank my advisory committee, Drs. -
Introduction to Mycology
INTRODUCTION TO MYCOLOGY The term "mycology" is derived from Greek word "mykes" meaning mushroom. Therefore mycology is the study of fungi. The ability of fungi to invade plant and animal tissue was observed in early 19th century but the first documented animal infection by any fungus was made by Bassi, who in 1835 studied the muscardine disease of silkworm and proved the that the infection was caused by a fungus Beauveria bassiana. In 1910 Raymond Sabouraud published his book Les Teignes, which was a comprehensive study of dermatophytic fungi. He is also regarded as father of medical mycology. Importance of fungi: Fungi inhabit almost every niche in the environment and humans are exposed to these organisms in various fields of life. Beneficial Effects of Fungi: 1. Decomposition - nutrient and carbon recycling. 2. Biosynthetic factories. The fermentation property is used for the industrial production of alcohols, fats, citric, oxalic and gluconic acids. 3. Important sources of antibiotics, such as Penicillin. 4. Model organisms for biochemical and genetic studies. Eg: Neurospora crassa 5. Saccharomyces cerviciae is extensively used in recombinant DNA technology, which includes the Hepatitis B Vaccine. 6. Some fungi are edible (mushrooms). 7. Yeasts provide nutritional supplements such as vitamins and cofactors. 8. Penicillium is used to flavour Roquefort and Camembert cheeses. 9. Ergot produced by Claviceps purpurea contains medically important alkaloids that help in inducing uterine contractions, controlling bleeding and treating migraine. 10. Fungi (Leptolegnia caudate and Aphanomyces laevis) are used to trap mosquito larvae in paddy fields and thus help in malaria control. Harmful Effects of Fungi: 1. -
Clinical and Laboratory Profile of Chronic Pulmonary Aspergillosis
Original article 109 Clinical and laboratory profile of chronic pulmonary aspergillosis: a retrospective study Ramakrishna Pai Jakribettua, Thomas Georgeb, Soniya Abrahamb, Farhan Fazalc, Shreevidya Kinilad, Manjeshwar Shrinath Baligab Introduction Chronic pulmonary aspergillosis (CPA) is a type differential leukocyte count, and erythrocyte sedimentation of semi-invasive aspergillosis seen mainly in rate. In all the four dead patients, the cause of death was immunocompetent individuals. These are slow, progressive, respiratory failure and all patients were previously treated for and not involved in angio-invasion compared with invasive pulmonary tuberculosis. pulmonary aspergillosis. The predisposing factors being Conclusion When a patient with pre-existing lung disease compromised lung parenchyma owing to chronic obstructive like chronic obstructive pulmonary disease or old tuberculosis pulmonary disease and previous pulmonary tuberculosis. As cavity presents with cough with expectoration, not many studies have been conducted in CPA with respect to breathlessness, and hemoptysis, CPA should be considered clinical and laboratory profile, the study was undertaken to as the first differential diagnosis. examine the profile in our population. Egypt J Bronchol 2019 13:109–113 Patients and methods This was a retrospective study. All © 2019 Egyptian Journal of Bronchology patients older than 18 years, who had evidence of pulmonary Egyptian Journal of Bronchology 2019 13:109–113 fungal infection on chest radiography or computed tomographic scan, from whom the Aspergillus sp. was Keywords: chronic pulmonary aspergillosis, immunocompetent, laboratory isolated from respiratory sample (broncho-alveolar wash, parameters bronchoscopic sample, etc.) and diagnosed with CPA from aDepartment of Microbiology, Father Muller Medical College Hospital, 2008 to 2016, were included in the study. -
Occurrence of Trichophyton Verrucosum in Cattle in the Ningxia
Guo et al. BMC Veterinary Research (2020) 16:187 https://doi.org/10.1186/s12917-020-02403-6 RESEARCH ARTICLE Open Access Occurrence of Trichophyton verrucosum in cattle in the Ningxia Hui autonomous region, China Yanan Guo1, Song Ge1, Haifeng Luo1, Atif Rehman1, Yong Li2 and Shenghu He1* Abstract Background: Ningxia Hui Autonomous Region is an important cattle breeding area in China, and cattle breeding bases are located in this area. In Ningxia, dermatophytes have not been paid attention to, so dermatophytosis is becoming more and more serious. For effective control measures, it is important to determine the disease prevalence and isolate and identify the pathogenic microorganism. Results: The study showed the prevalence of dermatophytes was 15.35% (74/482). The prevalence in calf was higher than adult cattle (p < 0.05). The morbidity was the highest in winter compared with autumn (p < 0.0001), summer (p < 0.05) and spring (p < 0.0001). The prevalence in Guyuan was the highest compared with Yinchuan (p < 0.05) and Shizuishan (p < 0.05). The incidence of lesions on the face, head, neck, trunk and whole body was 20.43, 38.71, 20.43, 10.75 and 9.68%, respectively. From all samples, the isolation rate of Trichophyton was highest (61.1%). The phylogenetic tree constructed showed that the 11 pathogenic fungi were on the same branch as Trichophyton verrucosum. Conclusions: This study reports, for the first time, the presence of Trichophyton verrucosum in cattle in Ningxia and showed that the incidence of dermatophytosis is related to different regions, ages and seasons. -
Emerging Health Concerns in the Era of Cannabis Legalization
Emerging Health Concerns in the Era of Cannabis Legalization Iyad N. Daher, MD, FACC, FASE, FSCCT Chief Science Officer, VRX Labs Cannabis legalization is advancing worldwide * complicated … * Legalization impact on population use and health hazards More first-time users More volume of consumption (more exposure) More matrices (smoke/vape/cookies/gummies/drinks) More access to vulnerable populations (young, elderly, cancer, immunocompromised, fertile females, pregnant) More potential for inappropriate/accidental use (young, driving, operating machinery) More apparent cannabis related medical problems (increased reporting) Cannabis population health impact is yet to be fully understood Limited US federal funding Restrictions on research even with private funds (stigma, loss of federal funding) Paucity of quality data (small numbers, case reports, no longitudinal studies, biases (reporting/publishing/authors/editors/reviewers) Post marketing studies NOT mandated at this time How do these concerns compare with alcohol? Alcohol like Cannabis specific first time users Increased cannabis related medical problems (psychiatric, Increased exposure bad experience, vulnerable populations contaminants) (young, pregnant) More matrices inappropriate/accidental use (smoke/vape/cookies/gummie (young, driving, operating s/drinks) machinery) vulnerable populations (elderly, More apparent cancer, immunocompromised, fertile or pregnant females): contaminants Comparison to alcohol is useful but has limitations Cannabis and derived THC/CBD have -
Prevalence & Distribution of Keratinophilic Fungi in Relation To
African Journal of Microbiology Research Vol. 6(42), pp. 6973-6977, 6 November, 2012 Available online at http://www.academicjournals.org/AJMR DOI: 10.5897/AJMR12.897 ISSN 1996-0808 ©2012 Academic Journals Full Length Research Paper A descriptive study of keratinophilic fungal flora of animal and bird habitat, Jaipur, Rajasthan Neetu Jain* and Meenakshi Sharma Laboratory of Microbiology, Department of Botany, University of Rajasthan, Jaipur India. Accepted 30 May, 2012 Keratinophilic fungi occur abundantly in the superficial soil layer of landfills and their surrounding. Forty seven soil samples of animal (37 samples) and bird (10 samples) habitats from different localities of Jaipur District were collected for the estimation of keratinophilic fungi using the hair baiting technique. Seventy five isolates belonging to 14 genera and 20 species were reported. Soil pH range varies from 6.5 to 10.5. But most of the fungi (33.33%) were isolated from neutral soil (pH 7.0). Chrysosporium tropicum (25.33%) was the predominant fungi isolated from both habitats soil. This was followed by the predominance of Trichophyton terrestre (12%), Trichophyton mentagrophytes (9.3%), C. indicum (5.33%), Actinomyces sp. (6.67%), and Nocardia sp. (6.67%) in both habitats. Interestingly, Exserophilum sp., Microsporum audouinii, Trichophyton verrucosum were isolated for the first time from Jaipur India. Key words: Dermatophytes, Trichophyton, Microsporum, Chrysosporium, soil fungi. INTRODUCTION Keratinophilic fungi include a variety of filamentous fungi may be exploited for their biotechnological potential in mainly comprising of hyphomycetes and several other industry (Kaul and Sumbali, 1999). Keratinophilic fungi taxonomic groups. Hypomycetes include dermatophytes are generally considered as soil saprophytes (Ajello, and a great variety of non dermatophytic filamentous 1953). -
The Interaction Between Tribolium Castaneum and Mycotoxigenic Aspergillus flavus in Maize Flour
insects Article The Interaction between Tribolium castaneum and Mycotoxigenic Aspergillus flavus in Maize Flour Sónia Duarte 1,2 , Ana Magro 1,*, Joanna Tomás 1, Carolina Hilário 1, Paula Alvito 3,4, Ricardo Boavida Ferreira 1,2 and Maria Otília Carvalho 1,2 1 Instituto Superior de Agronomia, Universidade de Lisboa, Tapada da Ajuda, 1349-017 Lisboa, Portugal; [email protected] (S.D.); [email protected] (J.T.); [email protected] (C.H.); [email protected] (R.B.F.); [email protected] (M.O.C.) 2 LEAF—Linking Landscape, Environment, Agriculture and Food, Tapada da Ajuda, 1349-017 Lisboa, Portugal 3 National Health Institute Dr. Ricardo Jorge (INSA), 1600-609 Lisboa, Portugal; [email protected] 4 Centre for Environmental and Marine Studies (CESAM), University of Aveiro, 3810-193 Aveiro, Portugal * Correspondence: [email protected] Simple Summary: It is important to hold cereals in storage conditions that exclude insect pests such as the red flour beetle and fungi, especially mycotoxin-producing ones (as a few strains of Aspergillus flavus). This work aims to investigate the interaction between these two organisms when thriving in maize flour. It was observed that when both organisms were together, the mycotoxins detected in maize flour were far higher than when the fungi were on their own, suggesting that the presence of insects may contribute positively to fungi development and mycotoxin production. The insects in Citation: Duarte, S.; Magro, A.; contact with the fungi were almost all dead at the end of the trials, suggesting a negative effect of the Tomás, J.; Hilário, C.; Alvito, P.; fungi growth on the insects. -
Essential Oils of Lamiaceae Family Plants As Antifungals
biomolecules Review Essential Oils of Lamiaceae Family Plants as Antifungals Tomasz M. Karpi ´nski Department of Medical Microbiology, Pozna´nUniversity of Medical Sciences, Wieniawskiego 3, 61-712 Pozna´n,Poland; [email protected] or [email protected]; Tel.: +48-61-854-61-38 Received: 3 December 2019; Accepted: 6 January 2020; Published: 7 January 2020 Abstract: The incidence of fungal infections has been steadily increasing in recent years. Systemic mycoses are characterized by the highest mortality. At the same time, the frequency of infections caused by drug-resistant strains and new pathogens e.g., Candida auris increases. An alternative to medicines may be essential oils, which can have a broad antimicrobial spectrum. Rich in the essential oils are plants from the Lamiaceae family. In this review are presented antifungal activities of essential oils from 72 Lamiaceae plants. More than half of these have good activity (minimum inhibitory concentrations (MICs) < 1000 µg/mL) against fungi. The best activity (MICs < 100) have essential oils from some species of the genera Clinopodium, Lavandula, Mentha, Thymbra, and Thymus. In some cases were observed significant discrepancies between different studies. In the review are also shown the most important compounds of described essential oils. To the chemical components most commonly found as the main ingredients include β-caryophyllene (41 plants), linalool (27 plants), limonene (26), β-pinene (25), 1,8-cineole (22), carvacrol (21), α-pinene (21), p-cymene (20), γ-terpinene (20), and thymol (20). Keywords: Labiatae; fungi; Aspergillus; Cryptococcus; Penicillium; dermatophytes; β-caryophyllene; sesquiterpene; monoterpenes; minimal inhibitory concentration (MIC) 1. Introduction Fungal infections belong to the most often diseases of humans. -
The New Species Concept in Dermatophytes—A Polyphasic Approach
Mycopathologia DOI 10.1007/s11046-008-9099-y The New Species Concept in Dermatophytes—a Polyphasic Approach Yvonne Gra¨ser Æ James Scott Æ Richard Summerbell Received: 15 October 2007 / Accepted: 30 January 2008 Ó Springer Science+Business Media B.V. 2008 Abstract The dermatophytes are among the most among these are the cosmopolitan bane of nails and frequently observed organisms in biomedicine, yet feet, Trichophyton rubrum, and the endemic African there has never been stability in the taxonomy, agent of childhood tinea capitis, Trichophyton identification and naming of the approximately 25 soudanense, which are effectively inseparable in all pathogenic species involved. Since the identification analyses. The molecular data require some reinter- of these species is often epidemiologically and pretation of results seen in conventional phenotypic ethically important, the difficulties in dermatophyte tests, but in most cases, phylogenetic insight is identification are a fruitful topic for modern molec- readily integrated with current laboratory testing ular biological investigation, done in tandem with procedures. renewed investigation of phenotypic characters. Molecular phylogenetic analyses such as multilocus Keywords Dermatophytes Á Taxonomy Á sequence typing have had to be tailored to accom- Molecular identification Á modate differing the mechanisms of speciation that Morphological identification Á Species concept have produced the dermatophytes that are commonly seen today. Even so, some biotypes that were unambiguously considered species in the past, based Introduction: Why Dermatophyte Biosystematics on profound differences in morphology and pattern of and Identification are Important (Medical infection, appear consistently not to be distinct and Scientific Aspects) species in modern molecular analyses. Most notable The dermatophytes belong to the small category of disease organisms that almost every human alive will Y. -
How Much Human Ringworm Is Zoophilic? Mcphee A, Cherian S, Robson J Adapted from Poster Produced for the Zoonoses Conference 25–26 July 2014 Brisbane
How much human ringworm is zoophilic? McPhee A, Cherian S, Robson J Adapted from poster produced for the Zoonoses Conference 25–26 July 2014 Brisbane Introduction Epidermophyton floccosum Humans Common Dermatophytes can be the cause of common infections in both Trichophyton rubrum [worldwide] Humans Very common humans and animals. The source of human infection may be Trichophyton rubrum [African] Humans Less common anthropophilic (human), geophilic (soil) or zoophilic (animal). Trichophyton interdigitale Anthropophilic Humans Common Zoophilic dermatophyte infections usually elicit a strong host [anthropophilic] response on the skin where there is contact with the infective Trichophyton tonsurans Humans Common animal or contaminated fomites. Table 1 illustrates the range of Trichophyton violaceum Humans Less common dermatophytes that are isolated from the mycology laboratory Microsporum audouinii Humans Less common and grouped by source of acquisition. Microsporum gypseum Soil Common Geophilic Microsporum nanum Soil/Pigs Rare Guinea pigs, Aim Trichophyton interdigitale [zoophilic] Common kangaroos To characterize and compare zoophilic with non-zoophilic Microsporum canis Cats Common dermatophyte human infections isolated at Sullivan Nicolaides Zoophilic Trichophyton verrucosum Cattle Rare Pathology (SNP) for the year 2013. Trichophyton equinum Horses Rare Microsporum nanum Soil/pigs Rare Method Table 1: Classification of dermatophytes according to source Superficial fungal cultures submitted in 2013 to Sullivan Nicolaides Pathology were reviewed. This laboratory services Queensland and extends into New South Wales as far south as Coffs Harbour. Specimens include skin scrapings, skin biopsies, nails and involved hair. All cutaneous samples (Figure 1) submitted for fungal culture receive direct examination using Calcofluor white/Evans Blue/ KOH/Glycerol under fluorescent and/or light microscopy (Figure 2) and cultured. -
Molecular Microbial Enumeration Tests and the Limitation of Colony Forming Units
Microbiological examination of nonsterile Cannabis products: Molecular Microbial Enumeration Tests and the limitation of Colony Forming Units. Kevin McKernan, Yvonne Helbert, Heather Ebling, Adam Cox, Liam T. Kane, Lei Zhang Medicinal Genomics, Woburn MA Cannabis microbial testing presents unique challenges. Unlike food testing, cannabis testing has to consider various routes oF administration beyond just oral administration. Cannabis flowers produce high concentrations oF antimicrobial cannabinoids and terpenoids and thus represent a diFFerent matrix than traditional Foods 1, 2. In 2018, it is estimated that 50% oF cannabis is consumed via vaporizing or smoking oils and Flowers while the other halF is consumed in Marijuana InFused Products or MIPs. There are also transdermal patches, salves and suppositories that all present diFFerent microbial considerations. Several recent publications have surveyed cannabis Flower microbiological communities3-5. These have detected several concerning genus and species such as Aspergillus niger, Aspergillus fumigatus, Aspergillus flavus, Aspergillus terreus, Penicillium paxilli and Penicillium citrinum, Clostridium botulinum, Eschericia coli, Salmonella and Staphyloccus. There are several documented cannabis complications and even Fatalities due to Aspergillosis in immuno-compromised patients6-18. A recent paper even demonstrates a case oF cannabis derived Aspergillosis in an immune competent patient19. It is unknown to what extent Aspergillus produces mycotoxins in cannabis and to what extent those toxins enrich in the cannabis extraction process. Llewellyn et al . published laboratory settings where to 8.7ug/g oF aflatoxin could be produce with inoculated “marihuana” but the work was perFormed in 1977 and still leaves many questions regarding iF this can occur in the wild 20. It is also unknown if Clostridium botulinum produces botulinum toxin in cannabis oils. -
Mycology Proficiency Testing Program
Mycology Proficiency Testing Program Test Event Critique January 2013 Mycology Laboratory Table of Contents Mycology Laboratory 2 Mycology Proficiency Testing Program 3 Test Specimens & Grading Policy 5 Test Analyte Master Lists 7 Performance Summary 11 Commercial Device Usage Statistics 15 Mold Descriptions 16 M-1 Exserohilum species 16 M-2 Phialophora species 20 M-3 Chrysosporium species 25 M-4 Fusarium species 30 M-5 Rhizopus species 34 Yeast Descriptions 38 Y-1 Rhodotorula mucilaginosa 38 Y-2 Trichosporon asahii 41 Y-3 Candida glabrata 44 Y-4 Candida albicans 47 Y-5 Geotrichum candidum 50 Direct Detection - Cryptococcal Antigen 53 Antifungal Susceptibility Testing - Yeast 55 Antifungal Susceptibility Testing - Mold (Educational) 60 1 Mycology Laboratory Mycology Laboratory at the Wadsworth Center, New York State Department of Health (NYSDOH) is a reference diagnostic laboratory for the fungal diseases. The laboratory services include testing for the dimorphic pathogenic fungi, unusual molds and yeasts pathogens, antifungal susceptibility testing including tests with research protocols, molecular tests including rapid identification and strain typing, outbreak and pseudo-outbreak investigations, laboratory contamination and accident investigations and related environmental surveys. The Fungal Culture Collection of the Mycology Laboratory is an important resource for high quality cultures used in the proficiency-testing program and for the in-house development and standardization of new diagnostic tests. Mycology Proficiency Testing Program provides technical expertise to NYSDOH Clinical Laboratory Evaluation Program (CLEP). The program is responsible for conducting the Clinical Laboratory Improvement Amendments (CLIA)-compliant Proficiency Testing (Mycology) for clinical laboratories in New York State. All analytes for these test events are prepared and standardized internally.