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International Journal of Microbiology

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https://www.readbyqxmd.com/read/28638412/molecular-identification-of-aminoglycoside-modifying-enzymes-and-plasmid-mediated-quinolone-resistance-genes-among-klebsiella-pneumoniae-clinical-isolates-recovered-from-egyptian-patients
#1
Mohamed F El-Badawy, Wael M Tawakol, Shaymaa W El-Far, Ibrahim A Maghrabi, Saleh A Al-Ghamdi, Moselhy S Mansy, Mohammed S Ashour, Mohamed M Shohayeb
Inappropriate use of antibiotics in clinical settings is thought to have led to the global emergence and spread of multidrug-resistant pathogens. The goal of this study was to investigate the prevalence of genes encoding aminoglycoside resistance and plasmid-mediated quinolone resistance among clinical isolates of Klebsiella pneumoniae. All K. pneumoniae isolates were phenotypically identified using API 20E and then confirmed genotypically through amplification of the specific K. pneumoniae phoE gene. All isolates were genotyped by the enterobacterial repetitive intergenic consensus polymerase chain reaction technique (ERIC-PCR)...
2017: International Journal of Microbiology
https://www.readbyqxmd.com/read/28630628/staphylococcus-saprophyticus-recovered-from-humans-food-and-recreational-waters-in-rio-de-janeiro-brazil
#2
Viviane Santos de Sousa, Ana Paula de Souza da-Silva, Leif Sorenson, Raphael Paiva Paschoal, Renata Fernandes Rabello, Eloiza Helena Campana, Márcia Soares Pinheiro, Lyssa Oliveira Ferreira Dos Santos, Natacha Martins, Ana Carolina Nunes Botelho, Renata Cristina Picão, Sérgio Eduardo Longo Fracalanzza, Lee Woodland Riley, George Sensabaugh, Beatriz Meurer Moreira
Staphylococcus saprophyticus is an important agent of urinary tract infection (UTI) in young women, but information about this pathogen in human microbiota and in common environment is lacking. The aim of this study was to characterize S. saprophyticus isolates from genitoanal microbiota of 621 pregnant women, 10 minas cheese packs, and five beaches in Rio de Janeiro city and compare PFGE profiles of these isolates with five UTI PFGE clusters described in this city. We investigated 65 S. saprophyticus isolates from microbiota, 13 from minas cheese, and 30 from beaches and 32 UTI isolates...
2017: International Journal of Microbiology
https://www.readbyqxmd.com/read/28596790/high-doses-of-halotolerant-gut-indigenous-lactobacillus-plantarum-reduce-cultivable-lactobacilli-in-newborn-calves-without-increasing-its-species-abundance
#3
Alexander Rodriguez-Palacios, Henry R Staempfli, J Scott Weese
To elucidate the ecological effect of high oral doses of halotolerant (resistant to table salt) indigenous-gut bacteria on other commensals early in life, we conducted a culture-based study to quantify the effect of intestinal Lactobacillus plantarum strain of bovine origin (with remarkable aerobic growth capabilities and inhibitory activity against Escherichia coli O157:H7 and F5) on clinical health and gut lactobacilli/coliforms in newborn calves. In a double-blind placebo-randomized trial twelve colostrum-fed calves, consecutively born at a farm, were fed L...
2017: International Journal of Microbiology
https://www.readbyqxmd.com/read/28584528/pigeon-pea-and-cowpea-based-cropping-systems-improve-vesicular-arbuscular-mycorrhizal-fungal-colonisation-of-subsequent-maize-on-the-alfisols-in-central-malawi
#4
Keston O W Njira, Ernest Semu, Jerome P Mrema, Patson C Nalivata
Mycorrhizal associations contribute to the sustainability of crop production systems through their roles in nutrient cycling and other benefits in the soil-plant ecosystems. A two-year study was conducted on the Alfisols of Lilongwe and Dowa districts, Central Malawi, to assess the vesicular-arbuscular mycorrhizal (VAM) fungal colonisation levels in pigeon pea, cowpea, and maize grown in sole cropping, legume-cereal, and legume-legume intercropping systems and in the maize grown in short rotation (year 2) as influenced by the previous cropping systems and N fertilizer application...
2017: International Journal of Microbiology
https://www.readbyqxmd.com/read/28567057/molecular-study-of-acinetobacter-baumannii-isolates-for-metallo-%C3%AE-lactamases-and-extended-spectrum-%C3%AE-lactamases-genes-in-intensive-care-unit-mansoura-university-hospital-egypt
#5
Nashwa M Alkasaby, Maysaa El Sayed Zaki
Acinetobacter baumannii (A. baumannii) has been known as a causative pathogen of hospital acquired infections. The aim of this study is to examine the presence of A. baumannii among clinical isolates from intensive care unit (ICU) in Mansoura University Hospital (MUH), its antibiotic resistance pattern, and prevalence of antibiotic resistance genes metallo-β-lactamases (MBLs) and extended-spectrum-β-lactamases (ESBLs) among A. baumannii isolates. A. baumannii was identified by colony morphology, API 20E, and confirmed by detecting the bla OXA-51-like carbapenemase gene by PCR...
2017: International Journal of Microbiology
https://www.readbyqxmd.com/read/28546811/antimicrobial-activity-of-a-cationic-guanidine-compound-against-two-pathogenic-oral-bacteria
#6
E Escamilla-García, A G Alcázar-Pizaña, J C Segoviano-Ramírez, C Del Angel-Mosqueda, A P López-Lozano, E Cárdenas-Estrada, M A De La Garza-Ramos, C E Medina-De La Garza, M Márquez
This study evaluated the potential antimicrobial properties of a polyguanidine (CatDex) on two oral bacteria. Chlorhexidine gluconate 1340 μmoL L(-1) (CHX 0.12%) was used as control. Streptococcus mutans (S. mutans) and Porphyromonas gingivalis (P. gingivalis) were grown in BHI media. Bacterial sensitivity and antimicrobial activity were determined by the minimum inhibitory concentration (MIC) and Kirby-Bauer methods. To study side effects, that is, toxicity, dental pulp stem cells (DPSCs) were used. Fluorometric cytotoxicity and confocal microscopy assays were used in order to test cell viability...
2017: International Journal of Microbiology
https://www.readbyqxmd.com/read/28539938/effects-of-medicinal-plant-extracts-and-photosensitization-on-aflatoxin-producing-aspergillus-flavus-raper-and-fennell
#7
Loise M Njoki, Sheila A Okoth, Peter M Wachira
This study was undertaken with an aim of exploring the effectiveness of medicinal plant extracts in the control of aflatoxin production. Antifungal properties, photosensitization, and phytochemical composition of aqueous and organic extracts of fruits from Solanum aculeastrum, bark from Syzygium cordatum, and leaves from Prunus africana, Ocimum lamiifolium, Lippia kituiensis, and Spinacia oleracea were tested. Spores from four-day-old cultures of previously identified toxigenic fungi, UONV017 and UONV003, were used...
2017: International Journal of Microbiology
https://www.readbyqxmd.com/read/28484494/antimicrobial-resistance-of-salmonella-enterica-serovars-typhi-and-paratyphi-isolates-from-a-general-hospital-in-karawaci-tangerang-indonesia-a-five-year-review
#8
Nata Pratama Hardjo Lugito, Cucunawangsih
Typhoid and paratyphoid fever known as enteric fever pose important global public health problem, with 21.6 million cases and approximately 250,000 deaths annually. It is a prevalent disease in Indonesia, but data on the antimicrobial resistance pattern is limited. This study aim was to provide data on the antimicrobial resistance pattern of S. Typhi and S. Paratyphi bloodstream isolates in a general hospital in Karawaci, Tangerang, Banten, Indonesia, during the period of January 2011 to December 2015. Susceptibility against antimicrobials was detected according to the guidelines of the Clinical and Laboratory Standards Institute (CLSI)...
2017: International Journal of Microbiology
https://www.readbyqxmd.com/read/28458692/control-of-passion-fruit-fungal-diseases-using-essential-oils-extracted-from-rosemary-rosmarinus-officinalis-and-eucalyptus-eucalyptus-agglomerata-in-egerton-university-main-campus-njoro-kenya
#9
Paul Njenga Waithaka, Eliud Mugu Gathuru, Benson Muriuki Githaiga, Salome Nduta Kimani
Growth of fruits which form an important part of human diet has been jeopardized by the many fungal diseases that are present today. This study was conceived to isolate the most common fungal pathogens in passion fruits. Fungi were isolated using potato dextrose agar in addition to characterization using morphological, cultural, and biochemical means. Extraction of essential oils from rosemary (Rosmarinus officinalis) and eucalyptus (Eucalyptus agglomerata) was done. Before carrying the sensitivity test of essential oils to the fungal isolates, constituents of the essential oils were determined...
2017: International Journal of Microbiology
https://www.readbyqxmd.com/read/28386280/bacterial-isolates-and-their-antimicrobial-susceptibility-patterns-of-wound-infections-among-inpatients-and-outpatients-attending-the-university-of-gondar-referral-hospital-northwest-ethiopia
#10
Aynalem Mohammed, Mengistu Endris Seid, Teklay Gebrecherkos, Moges Tiruneh, Feleke Moges
Background. The widespread uses of antibiotics, together with the length of time over which they have been available, have led to the emergence of resistant bacterial pathogens contributing to morbidity and mortality. This study was aimed to assess bacterial isolates and their drug susceptibility patterns from inpatients and outpatients with pus and/or wound discharge. Methods. A cross-sectional study was conducted at the University of Gondar Referral Hospital from March to May, 2014. Wound swab samples were collected from each study participant and inoculated into appropriate media...
2017: International Journal of Microbiology
https://www.readbyqxmd.com/read/28367217/bacteriological-profile-and-antimicrobial-susceptibility-patterns-of-bacteria-isolated-from-pus-wound-swab-samples-from-children-attending-a-tertiary-care-hospital-in-kathmandu-nepal
#11
Salu Rai, Uday Narayan Yadav, Narayan Dutt Pant, Jaya Krishna Yakha, Prem Prasad Tripathi, Asia Poudel, Binod Lekhak
In Nepal, little is known about the microbiological profile of wound infections in children and their antimicrobial susceptibility patterns. Total of 450 pus/wound swab samples collected were cultured using standard microbiological techniques and the colonies grown were identified with the help of biochemical tests. The antimicrobial susceptibility testing was performed by Kirby-Bauer disc diffusion technique. Methicillin-resistant Staphylococcus aureus isolates were detected by using cefoxitin disc and confirmed by determining minimum inhibitory concentrations (MIC) of oxacillin...
2017: International Journal of Microbiology
https://www.readbyqxmd.com/read/28348597/prevalence-of-bacteriuria-and-antimicrobial-susceptibility-patterns-among-diabetic-and-nondiabetic-patients-attending-at-debre-tabor-hospital-northwest-ethiopia
#12
Seble Worku, Awoke Derbie, Mulusew Alemneh Sinishaw, Yesuf Adem, Fantahun Biadglegne
Background. Urinary tract infection is a major health problem especially in developing countries. Information about bacterial pathogens isolated from urinary tract infection in diabetic patients and their antimicrobial susceptibility patterns is limited in Ethiopia. Therefore, this study aimed at isolating bacterial pathogens and their antimicrobial susceptibility patterns. Methods. A hospital based comparative cross-sectional study was conducted at Debre Tabor. Urine sample was inoculated onto cysteine lysine electrolyte deficient (CLED) medium...
2017: International Journal of Microbiology
https://www.readbyqxmd.com/read/28270849/prevalence-of-extended-spectrum-beta-lactamases-producing-microorganisms-in-patients-admitted-at-krrh-southwestern-uganda
#13
Baguma Andrew, Atek Kagirita, Joel Bazira
The emergence of extended-spectrum beta-lactamase- (ESBL-) producing pathogenic bacteria at Kabale Regional Referral Hospital (KRRH), located in southwestern Uganda, is of great concern: a phenomenon that worries clinicians and other healthcare workers due to the serious threat they pose to patients. This current study aimed at determining the phenotypic detection of ESBL-producing strains of E. coli, Klebsiella sp., and Proteus sp. isolated from clinical specimens and their prevalence in patients admitted at KRRH...
2017: International Journal of Microbiology
https://www.readbyqxmd.com/read/28255302/urinary-tract-infections-among-hiv-positive-pregnant-women-in-mwanza-city-tanzania-are-high-and-predicted-by-low-cd4-count
#14
Tito Chaula, Jeremiah Seni, Nhandi Ng'walida, Alphaxaid Kajura, Mariam M Mirambo, Rebekah DeVinney, Stephen E Mshana
Introduction. Urinary tract infection (UTI) among pregnant women can lead to adverse maternal and foetal outcomes. UTI has been widely studied in the general obstetric population in Tanzania; the present study evaluated the magnitude, antimicrobial resistance, and predictors of UTI among HIV-positive pregnant women. Methods. Between March and May 2016 midstream urine samples from 234 women attending prevention of mother to child transmission of HIV (PMTCT) clinics were analyzed using standard methods. Data was analyzed by STATA version 11...
2017: International Journal of Microbiology
https://www.readbyqxmd.com/read/28250772/molecular-characteristics-and-antibiotic-resistance-profiles-of-klebsiella-isolates-in-mthatha-eastern-cape-province-south-africa
#15
Sandeep Vasaikar, Larry Obi, Isaac Morobe, Mary Bisi-Johnson
The increase in the incidence of extended-spectrum β-lactamase- (ESBL-) producing Klebsiella species has become a serious problem worldwide, because of their incrimination in antibiotic resistance. The objective of this study is to investigate the resistance genes responsible for ESBL-producing Klebsiella species and carbapenemase-producing Klebsiella (CRE) isolated in Mthatha and to study their epidemiology. A prospective, descriptive study of 202 nonrepetitive samples from patients was obtained from Nelson Mandela Academic Hospital...
2017: International Journal of Microbiology
https://www.readbyqxmd.com/read/28197207/maize-fungal-growth-control-with-scopoletin-of-cassava-roots-produced-in-benin
#16
Rafiatou Ba, Teou Alfa, Fernand Gbaguidi, Kosi Mawuéna Novidzro, Kokouvi Dotse, Koffi Koudouvo, Ursula Houngue, Marcel T Donou Hounsode, Kossi Honoré Koumaglo, Yaovi Ameyapoh, Lamine Baba-Moussa
The chemical contamination of food is among the main public health issues in developing countries. With a view to find new natural bioactive products against fungi responsible for chemical contamination of staple food such as maize, the antifungal activity tests of scopoletin extracted from different components of the cassava root produced in Benin were carried out. The dosage of scopoletin from parts of the root (first skin, second skin, whole root, and flesh) was done by High Performance Liquid Chromatography...
2017: International Journal of Microbiology
https://www.readbyqxmd.com/read/28154578/growth-on-alpha-ketoglutarate-increases-oxidative-stress-resistance-in-the-yeast-saccharomyces-cerevisiae
#17
Maria Bayliak, Nadia Burdyliuk, Volodymyr Lushchak
Alpha-ketoglutarate (AKG) is an important intermediate in cell metabolism, linking anabolic and catabolic processes. The effect of exogenous AKG on stress resistance in S. cerevisiae cells was studied. The growth on AKG increased resistance of yeast cells to stresses, but the effects depended on AKG concentration and type of stressor. Wild-type yeast cells grown on AKG were more resistant to hydrogen peroxide, menadione, and transition metal ions (Fe(2+) and Cu(2+)) but not to ethanol and heat stress as compared with control ones...
2017: International Journal of Microbiology
https://www.readbyqxmd.com/read/28133483/assessment-of-resistance-and-bioremediation-ability-of-lactobacillus-strains-to-lead-and-cadmium
#18
Anna V Kirillova, Anna A Danilushkina, Denis S Irisov, Nataliya L Bruslik, Rawil F Fakhrullin, Yuri A Zakharov, Vladimir S Bukhmin, Dina R Yarullina
Cadmium (Cd) and lead (Pb) are heavy metals, important environmental pollutants, and potent toxicants to organism. Lactic acid bacteria (LAB) have been reported to remove Cd and Pb from solutions and therefore represent a useful tool for decontamination of food and beverages from heavy metals. Heavy metal ion binding by LAB was reported as metabolism-independent surface process. In this work ten Lactobacillus strains were investigated with respect to hydrophobicity, Lewis acid-base, and electrostatic properties of their outer cell surface in order to characterize their Cd and Pb removal capacity...
2017: International Journal of Microbiology
https://www.readbyqxmd.com/read/28127308/antifungal-activity-of-essential-oil-of-eucalyptus-camaldulensis-dehnh-against-selected-fusarium-spp
#19
Martin Muthee Gakuubi, Angeline W Maina, John M Wagacha
The objective of this study was to evaluate the antifungal activity of essential oil (EO) of Eucalyptus camaldulensis Dehnh. against five Fusarium spp. commonly associated with maize. The essential oil had been extracted by steam distillation in a modified Clevenger-type apparatus from leaves of E. camaldulensis and their chemical composition characterized by gas chromatography mass spectrometry. Poisoned food technique was used to determine the percentage inhibition of mycelial growth, minimum inhibitory concentration, and minimum fungicidal concentration of the EO on the test pathogens...
2017: International Journal of Microbiology
https://www.readbyqxmd.com/read/28115936/the-bacteriomes-of-ileal-mucosa-and-cecal-content-of-broiler-chickens-and-turkeys-as-revealed-by-metagenomic-analysis
#20
Shan Wei, Michael Lilburn, Zhongtang Yu
The gastrointestinal (GI) bacteriome of poultry is important in host nutrition and health, but its diversity and composition remain poorly characterized. In this study we phylogenetically characterized the bacteriome in the cecal contents and ileal mucosa of chickens and turkeys using metagenomics empowered by pyrosequencing technique. >95% coverage of bacterial diversity was achieved except for the turkey ileal mucosa. Collectively, 3,401 and 125 operational taxonomy units (OTU, defined at a 0.03 phylogenetic distance) in chicken, and 1,687 and 16 OTUs in turkey were identified from the cecal content and the ileal mucosa, respectively...
2016: International Journal of Microbiology
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