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Open Microbiology Journal

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https://www.readbyqxmd.com/read/29204224/bacteriology-and-antibiogram-of-urinary-tract-infection-among-female-patients-in-a-tertiary-health-facility-in-south-eastern-nigeria
#1
REVIEW
Angus N Oli, Vivian B Akabueze, Chijioke E Ezeudu, George U Eleje, Obiora S Ejiofor, Ifeanyichukwu U Ezebialu, Charlotte B Oguejiofor, Ifeoma M Ekejindu, George O Emechebe, Kenneth N Okeke
Background: Urinary Tract Infection (UTI) is a common contagion among men and women with the incidence relatively higher among women due to their differing anatomy. An understanding of the kind of pathogens implicated in urinary tract infections as well as antibiotic susceptibility profiling may help the clinician make rationally correct empirical choice in their treatment. Objective: This study is aimed at determining the type and antibiotic susceptibility pattern of bacterial uropathogens isolated from female patients attending Chukwuemeka Odumegwu Ojukwu University Teaching Hospital (COOUTH), Awka, Nigeria...
2017: Open Microbiology Journal
https://www.readbyqxmd.com/read/29204223/arbuscular-mycorrhizal-fungi-increase-the-phenolic-compounds-concentration-in-the-bark-of-the-stem-of-libidibia-ferrea-in-field-conditions
#2
REVIEW
Emanuela Lima Dos Santos, Francineyde Alves da Silva, Fábio Sérgio Barbosa da Silva
Background: Libidibia ferrea is a species particular to the caatinga presenting medicinal properties for containing bioactive compounds. The use of Arbuscular Mycorrhizal Fungi (AMF) can increase the production of biomolecules in the legume leaves; however, no light has been shed on the role of symbiosis in maximizing metabolites production in the bark of L. ferrea stem. Objective: The aim was to select AMF that are efficient at increasing the production of phenolic compounds with medicinal properties in the bark of the L...
2017: Open Microbiology Journal
https://www.readbyqxmd.com/read/29204222/paracoccidioidomycosis-current-perspectives-from-brazil
#3
REVIEW
Rinaldo Poncio Mendes, Ricardo de Souza Cavalcante, Sílvio Alencar Marques, Mariângela Esther Alencar Marques, James Venturini, Tatiane Fernanda Sylvestre, Anamaria Mello Miranda Paniago, Ana Carla Pereira, Julhiany de Fátima da Silva, Alexandre Todorovic Fabro, Sandra de Moraes Gimenes Bosco, Eduardo Bagagli, Rosane Christine Hahn, Adriele Dandara Levorato
Background: This review article summarizes and updates the knowledge on paracoccidioidomycosis. P lutzii and the cryptic species of P. brasiliensis and their geographical distribution in Latin America, explaining the difficulties observed in the serological diagnosis. Objectives: Emphasis has been placed on some genetic factors as predisposing condition for paracoccidioidomycosis. Veterinary aspects were focused, showing the wide distribution of infection among animals...
2017: Open Microbiology Journal
https://www.readbyqxmd.com/read/29204221/antibiotic-resistance-patterns-and-virulence-determinants-of-different-sccmec-and-pulsotypes-of-staphylococcus-aureus-isolated-from-a-major-hospital-in-ilam-iran
#4
REVIEW
Mehdi Abbasi, Majid BaseriSalehi, Nima Bahador, Morovat Taherikalani
Aims & Objectives: The aim of this study is to evaluate genetic relatedness, antibiotic resistance pattern, and virulence characteristics of different types of S. aureus isolated from air, surfaces, staff, and patients in a Public hospital in Ilam. Methods & Materials: A total of 88 of 140 staphylococci identified as S. aureus by conventional and molecular methods were used in this study. Isolate samples were obtained from surfaces, staff, patients, and hospital indoor air...
2017: Open Microbiology Journal
https://www.readbyqxmd.com/read/29151997/genetic-investigation-of-beta-lactam-associated-antibiotic-resistance-among-escherichia-coli-strains-isolated-from-water-sources
#5
Reza Ranjbar, Mehrdad Sami
Background: Antimicrobial resistance is an important factor threatening human health. It is widely accepted that antibiotic resistant bacteria such as Escherichia coli (E. coli) released from humans and animals into the water sources, can introduce their resistance genes into the natural bacterial community. Objective: The aim of this study was to investigate the prevalence of blaTEM, blaCTX, blaSHV, blaOXA and blaVEB associated-antibiotic resistance among E. coli bacteria isolated from different water resources in Iran...
2017: Open Microbiology Journal
https://www.readbyqxmd.com/read/29151996/co-occurrence-of-plasmid-mediated-ampc-%C3%AE-lactamase-activity-among-klebsiella-pneumoniae-and-escherichia-coli
#6
Abdulaziz Zorgani, Hiyam Daw, Najib Sufya, Abdullah Bashein, Omar Elahmer, Chedly Chouchani
Introduction: Extended-spectrum β-lactamases (ESBLs), including the AmpC type, are important mechanisms of resistance among Klebsiella pneumoniae and Escherichia coli isolates. Objective: The aim of the study was to investigate the occurrence of AmpC-type β-lactamase producers isolated from two hospitals in Tripoli, Libya. Methods: All clinical isolates (76 K. pneumoniae and 75 E. coli) collected over two years (2013-2014) were evaluated for susceptibility to a panel of antimicrobials and were analyzed phenotypically for the ESBL and AmpC phenotype using E-test and ESBL and AmpC screen disc test...
2017: Open Microbiology Journal
https://www.readbyqxmd.com/read/29151995/the-molecular-study-of-antibiotic-resistance-to-quinolones-in-salmonella-enterica-strains-isolated-in-tehran-iran
#7
Shirin Malehmir, Reza Ranjbar, Naser Harzandi
Introduction: Salmonella is known as one of the most important causes of gastrointestinal disease in the world. Quinolones and fluoroquinolones are used successfully in the treatment of salmonellosis particularly for infections that have become resistant to several antibiotics. But non-susceptible isolates to quinolones have been reported in several countries. The data are limited about the prevalence of quinolone-resistant isolates in our country. Therefore, this study investigated the plasmid-mediated quinolone resistance genes in Salmonella enterica isolated in Children's Medical Center in Tehran during 2014-2015...
2017: Open Microbiology Journal
https://www.readbyqxmd.com/read/29151994/antimicrobial-activity-of-cultivable-endophytic-fungi-associated-with-hancornia-speciosa-gomes-bark
#8
Mardonny Bruno de Oliveira Chagas, Irailton Prazeres Dos Santos, Luis Claudio Nascimento da Silva, Maria Tereza Dos Santos Correia, Janete Magali de Araújo, Marilene da Silva Cavalcanti, Vera Lucia de Menezes Lima
Introduction: In this study, we evaluated the antimicrobial potential of cultivable endophytic fungi associated with Hancornia speciosa Gomes stem bark. Methods and Materials: Plant samples were collected in rainy (July 2010) and dry (January 2011) seasons. In total, 116 endophytic fungi strains were isolated from 90 fragments (64.4% frequency of colonization). Higher fungi frequency was observed in the rainy season (84.4%). The strains were grouped into 14 species; the most frequent were Phoma cava (13...
2017: Open Microbiology Journal
https://www.readbyqxmd.com/read/29151993/antibiotic-based-phenotype-and-hospital-admission-profile-are-the-most-likely-predictors-of-genotyping-classification-of-mrsa
#9
Ali M Bazzi, Jaffar A Al-Tawfiq, Ali A Rabaan, Dianne Neal, Aimee Ferraro, Mahmoud M Fawarah
Background: Methicillin-resistant Staphylococcus aureus (MRSA) infection is associated with increased morbidity, mortality, and financial burdens. Phenotyping methods are used to classify MRSA as either health care MRSA (HA-MRSA) or community-associated MRSA (CA-MRSA). Recent studies suggested the phenotyping methods are not always reliable, based on a lack of concordance with genotyping results. Objective: In this study, concordance of classification methods based on clinical characteristics or antibiotic susceptibility compared to the gold standard genotyping was assessed in the classification of MRSA...
2017: Open Microbiology Journal
https://www.readbyqxmd.com/read/29151992/aerococcus-urinae-and-aerococcus-sanguinicola-susceptibility-testing-of-120-isolates-to-six-antimicrobial-agents-using-disk-diffusion-eucast-etest-and-broth-microdilution-techniques
#10
Derya Carkaci, Xiaohui C Nielsen, Kurt Fuursted, Robert Skov, Ole Skovgaard, Emilio P Trallero, Reto Lienhard, Jenny Åhman, Erika Matuschek, Gunnar Kahlmeter, Jens J Christensen
Background: Aerococcus urinae and Aerococcus sanguinicola are relatively newcomers and emerging organisms in clinical and microbiological practice. Both species have worldwide been associated with urinary tract infections. More rarely cases of bacteremia/septicemia and infective endocarditis have been reported. Treatment options are therefore important. Just recently, European recommendations on susceptibility testing and interpretive criteria have been released. Objective: In this investigation 120 A...
2017: Open Microbiology Journal
https://www.readbyqxmd.com/read/28932329/molecular-characterization-of-klebsiella-pneumoniae-clinical-isolates-with-elevated-resistance-to-carbapenems
#11
Rasha Barwa, Mona Shaaban
BACKGROUND: Emergence of carbapenems-resistant K. pneumoniae represents a serious challenge for antimicrobial therapy. OBJECTIVE: The aim of this research is to determine different mechanisms mediating the emergence of K. pneumoniae isolates with high-level carbapenem resistance. METHOD: A total of 80 K. pneumoniae isolates were purified from sputum and urine specimens. The minimum inhibitory concentrations (MICs) of imipenem and meropenem were determined by broth microdilution method...
2017: Open Microbiology Journal
https://www.readbyqxmd.com/read/28839494/sub-inhibitory-concentrations-of-rifampicin-strongly-stimulated-biofilm-production-in-s-aureus
#12
Agostinho Alves Lima-E-Silva, Renato Geraldo Silva-Filho, Henry Marcel Zalona Fernandes, Carmen Soares Meirelles Saramago, Alice Slotfeldt Viana, Maria José Souza, Eduardo Matos Nogueira
BACKGROUND AND OBJECTIVES: Staphylococcus aureus is an important pathogen and a frequent cause of infections associated with biofilm production in implantable medical devices. Biofilm production can be induced by sub-inhibitory concentrations (sub-MICs) of certain antibiotics, but few studies have researched this occurrence in S. aureus. In this study, we investigated the effect of sub-MICs of rifampicin and minocycline on biofilm production by five clinical and five non-clinical S. aureus isolates...
2017: Open Microbiology Journal
https://www.readbyqxmd.com/read/28839493/diversity-of-multidrug-efflux-genes-and-phenotypic-evaluation-of-the-in-vitro-resistance-dynamics-of-clinical-staphylococcus-aureus-isolates-using-methicillin-a-model-%C3%AE-lactam
#13
John F Antiabong, Marleen M Kock, Nontombi M Bellea, Marthie M Ehlers
OBJECTIVES: Methicillin-resistant Staphylococcus aureus (MRSA) across the world often leave clinicians with little or no choice of treatment options. The multi-drug efflux (MDE) genes are bacterial survival mechanisms responsible for the pumping out of antibiotics and other biocides from the cytoplasm. Whilst effort is being made in the development of antibiotic adjuvants such as efflux pumps inhibitors, information is needed on the diversity of these MDEs in the circulating S. aureus and on the growth dynamics of the clinical isolates in response to antibiotics is not regularly examined...
2017: Open Microbiology Journal
https://www.readbyqxmd.com/read/28839492/misinterpretation-of-gram-stain-from-the-stationary-growth-phase-of-positive-blood-cultures-for-brucella-and-acinetobacter-species
#14
Ali M Bazzi, Jaffar A Al-Tawfiq, Ali A Rabaan
INTRODUCTION: Acinetobacter baumannii and Brucella species are Gram-negative organisms that are vulnerable to misinterpretation as Gram-positive or Gram-variable in blood cultures. OBJECTIVE: We assess the random errors in gram stain interpretation to reduce the likelihood of such errors and therefore patient harm. METHODOLOGY: Aerobic and anaerobic blood cultures from two patients in an acute care facility in Saudi Arabia were subjected to preliminary Gram-staining...
2017: Open Microbiology Journal
https://www.readbyqxmd.com/read/28839491/non-coding-rnas-are-differentially-expressed-by-nocardia-brasiliensis-in-vitro-and-in-experimental-actinomycetoma
#15
Josué S Cruz-Rabadán, Juan Miranda-Ríos, Guadalupe Espín-Ocampo, Luis J Méndez-Tovar, Héctor Rubén Maya-Pineda, Francisca Hernández-Hernández
INTRODUCTION: Nocardia spp. are common soil-inhabiting bacteria that frequently infect humans through traumatic injuries or inhalation routes and cause infections, such as actinomycetoma and nocardiosis, respectively. Nocardia brasiliensis is the main aetiological agent of actinomycetoma in various countries. Many bacterial non-coding RNAs are regulators of genes associated with virulence factors. OBJECTIVE: The aim of this work was to identify non-coding RNAs (ncRNAs) expressed during infection conditions and in free-living form (in vitro) in Nocardia brasiliensis...
2017: Open Microbiology Journal
https://www.readbyqxmd.com/read/28839490/effects-of-prenatal-consumption-of-caprine-milk-oligosaccharides-on-mice-mono-associated-with-bifidobacterium-bifidum-agr2166
#16
Caroline Thum, Kikuji Itoh, Wayne Young, Adrian Cookson, Warren McNabb, Nicole Roy
BACKGROUND: Prenatal consumption of oligosaccharides are associated with changes in the maternal gastrointestinal tract (GIT) microbiota with health consequences for the offspring. It has previously been demonstrated that caprine milk oligosaccharides (CMO) stimulate the growth and fermentation rate of Bifidobacterium bifidum AGR2166. OBJECTIVE: The objective of this study was to examine the effects of B. bifidum AGR2166 and prenatal consumption of CMO, alone or in combination, on the dam's large intestine, foetal development and ability of B...
2017: Open Microbiology Journal
https://www.readbyqxmd.com/read/28761562/assessment-of-physicochemical-and-microbiological-quality-of-public-swimming-pools-in-addis-ababa-ethiopia
#17
Kokebe Yedeme, Melese Hailu Legese, Almaz Gonfa, Somson Girma
BACKGROUND: From swimming pools, bathers may acquire many potential pathogens or may be affected by the physicochemical characteristics of water used during bathing. Hence, this study aimed at assessing the physicochemical and microbiological quality of public swimming pools located at different hotels and recreation center in Addis Ababa, Ethiopia. METHOD: A cross sectional study was carried out from February to May, 2016. Nine hotels and one recreation center which recognized to have public swimming services were included...
2017: Open Microbiology Journal
https://www.readbyqxmd.com/read/28659996/the-immunomodulatory-effect-of-trichophyton-rubrum-exoantigens-in-the-treatment-of-experimental-septic-arthritis
#18
Seyed A Ghiasian, Amir H Maghsood, Asadollah Abniki, Abbas Mirshafiey
BACKGROUND: Understanding the nature and function of fungal exoantigens might lead to novel approaches in the treatment and prophylaxis of some infectious diseases. Septic arthritis represents a serious problem for medicine due to the high incidence rate and severe complications. OBJECTIVE: The present study aimed at assessing the immunomodulatory effects of Trichophyton rubrum culture filtrate as a novel compound in experimental septic arthritis. METHOD: The septic arthritis was haematogenously induced in Sprague-Dawley rats by a single intravenous injection of 10(9) colony forming units of the human clinical isolate Staphylococcus aureus producing toxic shock syndrome toxin-1...
2017: Open Microbiology Journal
https://www.readbyqxmd.com/read/28603564/a-study-on-the-microbiological-status-of-mineral-drinking-water
#19
Faria Y Aditi, Shafkat S Rahman, Md M Hossain
INTRODUCTION: Water-borne diseases constitute a major health burden in Bangladesh. The objective of this study was to assess the overall quality of mineral water samples that obtained from different shops of Dhaka city. MATERIAL AND METHODS: To achieve the above-mentioned objective, methods of heterotrophic plate count (HPC) and total coliform count (TCC) were applied. Moreover, isolated colony from mineral water samples were characterized by using biochemical and antimicrobial susceptibility tests...
2017: Open Microbiology Journal
https://www.readbyqxmd.com/read/28567147/ozone-sensitivity-and-catalase-activity-in-pigmented-and-non-pigmented-strains-of-serratia-marcescens
#20
José de Ondarza
BACKGROUND: Ozone exposure rapidly leads to bacterial death, making ozone an effective disinfectant in food industry and health care arena. However, microbial defenses may moderate this effect and play a role in the effective use of oxidizing agents for disinfection. Serratia marcescens is an opportunistic pathogen, expressing genes differentially during infection of a human host. A better understanding of regulatory systems that control expression of Serratia's virulence genes and defenses is therefore valuable...
2017: Open Microbiology Journal
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