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Critical Reviews in Microbiology

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https://www.readbyqxmd.com/read/28816070/correction-to-rossi-e-et%C3%A2-al-it-s-a-gut-feeling-escherichia-coli-biofilm-formation-in-the-gastrointestinal-tract-environment
#1
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No abstract text is available yet for this article.
August 17, 2017: Critical Reviews in Microbiology
https://www.readbyqxmd.com/read/28741415/gram-negative-bacterial-membrane-vesicle-release-in-response-to-the-host-environment-different-threats-same-trick
#2
Charlotte Volgers, Paul H M Savelkoul, Frank R M Stassen
Bacteria are confronted with a multitude of stressors when occupying niches within the host. These stressors originate from host defense mechanisms, other bacteria during niche competition or result from physiological challenges such as nutrient limitation. To counteract these stressors, bacteria have developed a stress-induced network to mount the adaptations required for survival. These stress-induced adaptations include the release of membrane vesicles from the bacterial envelope. Membrane vesicles can provide bacteria with a plethora of immediate and ultimate benefits for coping with environmental stressors...
July 25, 2017: Critical Reviews in Microbiology
https://www.readbyqxmd.com/read/28609211/bioprospecting-of-functional-cellulases-from-metagenome-for-second-generation-biofuel-production-a-review
#3
Rameshwar Tiwari, Lata Nain, Nikolaos E Labrou, Pratyoosh Shukla
Second generation biofuel production has been appeared as a sustainable and alternative energy option. The ultimate aim is the development of an industrially feasible and economic conversion process of lignocellulosic biomass into biofuel molecules. Since, cellulose is the most abundant biopolymer and also represented as the photosynthetically fixed form of carbon, the efficient hydrolysis of cellulose is the most important step towards the development of a sustainable biofuel production process. The enzymatic hydrolysis of cellulose by suites of hydrolytic enzymes underlines the importance of cellulase enzyme system in whole hydrolysis process...
June 13, 2017: Critical Reviews in Microbiology
https://www.readbyqxmd.com/read/28609183/farnesol-signalling-in-candida-albicans-more-than-just-communication
#4
Melanie Polke, Ines Leonhardt, Oliver Kurzai, Ilse D Jacobsen
Candida albicans is a successful colonizer of the human host, which can, under certain circumstances cause a range of clinically diverse infections. Important virulence-associated traits of the fungus, such as the dimorphic switch and biofilm formation, are controlled by the quorum sensing molecule farnesol. Given the potential of farnesol as a novel antifungal drug, there has been increasing research into the mechanism underlying farnesol sensing and action in C. albicans. However, despite the identification of various factors involved in farnesol signalling, its exact mode of action remains largely unclear...
June 13, 2017: Critical Reviews in Microbiology
https://www.readbyqxmd.com/read/28604247/brucella-central-carbon-metabolism-an-update
#5
T Barbier, A Zúñiga-Ripa, S Moussa, H Plovier, J F Sternon, L Lázaro-Antón, R Conde-Álvarez, X De Bolle, M Iriarte, I Moriyón, J J Letesson
The brucellae are facultative intracellular pathogens causing brucellosis, an important zoonosis. Here, we review the nutritional, genetic, proteomic and transcriptomic studies on Brucella carbon uptake and central metabolism, information that is needed for a better understanding of Brucella virulence. There is no uniform picture across species but the studies suggest primary and/or secondary transporters for unknown carbohydrates, lactate, glycerol phosphate, erythritol, xylose, ribose, glucose and glucose/galactose, and routes for their incorporation to central metabolism, including an erythritol pathway feeding the pentose phosphate cycle...
June 12, 2017: Critical Reviews in Microbiology
https://www.readbyqxmd.com/read/28578640/inorganic-and-metal-nanoparticles-and-their-antimicrobial-activity-in-food-packaging-applications
#6
Mahmoud Hoseinnejad, Seid Mahdi Jafari, Iman Katouzian
Nanotechnology has revolutionized almost all the fields of science and technology, particularly the food packaging industry. Accordingly, some nanoparticles can be used in food contact materials to preserve food products for longer periods. To date, many inorganic and metal nanoparticles have been implemented to synthesize active food packaging materials and to extend the shelf-life of foods. Packaging with nanocomposites containing these nanoparticles offers advantages, such as reduction in the usage of preservatives and higher rate of reactions to inhibit the microbial growth...
June 3, 2017: Critical Reviews in Microbiology
https://www.readbyqxmd.com/read/28562180/the-multi-omics-promise-in-context-from-sequence-to-microbial-isolate
#7
Johanna Gutleben, Maryam Chaib De Mares, Jan Dirk van Elsas, Hauke Smidt, Jörg Overmann, Detmer Sipkema
The numbers and diversity of microbes in ecosystems within and around us is unmatched, yet most of these microorganisms remain recalcitrant to in vitro cultivation. Various high-throughput molecular techniques, collectively termed multi-omics, provide insights into the genomic structure and metabolic potential as well as activity of complex microbial communities. Nonetheless, pure or defined cultures are needed to (1) decipher microbial physiology and thus test multi-omics-based ecological hypotheses, (2) curate and improve database annotations and (3) realize novel applications in biotechnology...
May 31, 2017: Critical Reviews in Microbiology
https://www.readbyqxmd.com/read/28557577/the-next-chapter-for-group-b-meningococcal-vaccines
#8
N Y Wang, A J Pollard
The majority of invasive meningococcal disease (IMD) in the developed world is caused by capsular group B Neisseria meningitidis, however success with vaccination against organisms bearing this capsule has previously been restricted to control of geographically limited clonal outbreaks. As we enter a new era, with the first routine program underway to control endemic group B meningococcal disease for infants in the UK, it is timely to review the key landmarks in group B vaccine development, and discuss the issues determining whether control of endemic group B disease will be achieved...
May 30, 2017: Critical Reviews in Microbiology
https://www.readbyqxmd.com/read/28581361/the-study-of-h-pylori-putative-candidate-factors-for-single-and-multi-component-vaccine-development
#9
Nasrin Mirzaei, Farkhondeh Poursina, Sharareh Moghim, Niloufar Rashidi, Hajieh Ghasemian Safaei
Helicobacter pylori has grown to colonize inside the stomach of nearly half of the world's population, turning into the most prevalent infections in the universe. Medical care failures noticeably confirm the need for a vaccine to hinder or deal with H. pylori. This review is planned to discuss the most known factors as a vaccine candidate, including single (AhpC, BG, CagA, KatA, Fla, Hsp, HWC, Lpp, LPS, NAP, OMP, OMV, SOD, Tpx, Urease, VacA) and multi-component vaccines. Many promising results in the field of single and multivalent vaccine can be seen, but there is no satisfactory outcome and neither a prophylactic nor a therapeutic vaccine to treat or eradicate the infection in human has been acquired...
September 2017: Critical Reviews in Microbiology
https://www.readbyqxmd.com/read/28581360/the-role-of-biofilms-in-persistent-infections-and-factors-involved-in-ica-independent-biofilm-development-and-gene-regulation-in-staphylococcus-aureus
#10
Agnes Marie Sá Figueiredo, Fabienne Antunes Ferreira, Cristiana Ossaille Beltrame, Marina Farrel Côrtes
Staphylococcus aureus biofilms represent a unique micro-environment that directly contribute to the bacterial fitness within hospital settings. The accumulation of this structure on implanted medical devices has frequently caused the development of persistent and chronic S. aureus-associated infections, which represent an important social and economic burden worldwide. ica-independent biofilms are composed of an assortment of bacterial products and modulated by a multifaceted and overlapping regulatory network; therefore, biofilm composition can vary among S...
September 2017: Critical Reviews in Microbiology
https://www.readbyqxmd.com/read/28502225/genomics-of-lactic-acid-bacteria-current-status-and-potential-applications
#11
Chongde Wu, Jun Huang, Rongqing Zhou
Lactic acid bacteria (LAB) are widely used for the production of a variety of foods and feed raw materials where they contribute to flavor and texture of the fermented products. In addition, specific LAB strains are considered as probiotic due to their health-promoting effects in consumers. Recently, the genome sequencing of LAB is booming and the increased amount of published genomics data brings unprecedented opportunity for us to reveal the important traits of LAB. This review describes the recent progress on LAB genomics and special emphasis is placed on understanding the industry-related physiological features based on genomics analysis...
August 2017: Critical Reviews in Microbiology
https://www.readbyqxmd.com/read/28502224/diagnosis-and-treatment-of-paediatric-tuberculosis-an-insight-review
#12
Nityananda Mandal, Parveen Kumar Anand, Subhash Gautam, Shritam Das, Tahziba Hussain
Tuberculosis (TB) is a major public health problem, invading all age groups world-wide. It is an opportunistic infection affecting the individuals alone or with co-infections. Childhood TB is a neglected aspect and a significant health problem in epidemic areas. It constitutes more than 20% of TB incidence. Pediatric TB exists in the shadow of adult TB. The clinicians concentrate on pulmonary manifestation of TB, whereas it is a major problem in both pulmonary and extra-pulmonary infections. The rate of infection with this disease is mostly associated with poverty, social disruption and human immunodeficiency virus (HIV) infection...
August 2017: Critical Reviews in Microbiology
https://www.readbyqxmd.com/read/28539074/nontypeable-haemophilus-influenzae-and-chronic-obstructive-pulmonary-disease-a-review-for-clinicians
#13
Krishna Bajee Sriram, Amanda J Cox, Robert L Clancy, Mary P E Slack, Allan W Cripps
Chronic Obstructive Pulmonary Disease (COPD) is a leading cause of morbidity and mortality worldwide. In the lower airways of COPD patients, bacterial infection is a common phenomenon and Haemophilus influenzae is the most commonly identified bacteria. Haemophilus influenzae is divided into typeable and nontypeable (NTHi) strains based on the presence or absence of a polysaccharide capsule. While NTHi is a common commensal in the human nasopharynx, it is associated with considerable inflammation when it is present in the lower airways of COPD patients, resulting in morbidity due to worsening symptoms and increased frequency of COPD exacerbations...
May 25, 2017: Critical Reviews in Microbiology
https://www.readbyqxmd.com/read/28539069/real-world-challenges-for-hepatitis-c-virus-medications-a-critical-overview
#14
Imran Shahid, Waleed Hassan AlMalki, Sajida Hassan, Muhammad Hassan Hafeez
From 2010, the landscape of hepatitis C therapeutics has been changed rapidly, and today we are standing at a cusp of a pharmacological revolution where highly effective and interferon (IFN)-free direct acting antivirals (DAAs) are already on the market. Such treatment paradigms attain 90-95% sustained virologic response (SVR; undetectable viral load at week 12 or 24 at the end of therapy) rates in treated individuals compared to 50-70% with treatment completion of dual-therapy-pegylated interferon (PEG-IFN) and ribavirin (RBV)...
May 25, 2017: Critical Reviews in Microbiology
https://www.readbyqxmd.com/read/28537817/the-action-of-probiotic-microorganisms-on-chemical-contaminants-in-milk
#15
Katia Francine Wochner, Tânia Aparecida Becker-Algeri, Eliane Colla, Eliana Badiale-Furlong, Deisy Alessandra Drunkler
Consumption of milk and its derivatives is an important food habit in the diet of all age groups. However, there has been increasing concern about physical, biological (pathogenic or spoilage microorganisms) and chemical (metals, pesticides and mycotoxins) contaminants in milk and dairy products. Considering the high levels of consumption, it is important that milk and dairy products are free from toxic compounds. Microbial degradation as a strategy for chemical decontamination is an emerging biotechnological approach that is considered a safe and inexpensive practice...
May 24, 2017: Critical Reviews in Microbiology
https://www.readbyqxmd.com/read/28485690/-it-s-a-gut-feeling-escherichia-coli-biofilm-formation-in-the-gastrointestinal-tract-environment
#16
Elio Rossi, Annika Cimdins, Petra Lüthje, Annelie Brauner, Åsa Sjöling, Paolo Landini, Ute Römling
Escherichia coli can commonly be found, either as a commensal, probiotic or a pathogen, in the human gastrointestinal (GI) tract. Biofilm formation and its regulation is surprisingly variable, although distinct regulatory pattern of red, dry and rough (rdar) biofilm formation arise in certain pathovars and even clones. In the GI tract, environmental conditions, signals from the host and from commensal bacteria contribute to shape E. coli biofilm formation within the multi-faceted multicellular communities in a complex and integrated fashion...
May 9, 2017: Critical Reviews in Microbiology
https://www.readbyqxmd.com/read/28129707/fluorescence-in-situ-hybridization-fish-in-the-microbiological-diagnostic-routine-laboratory-a-review
#17
REVIEW
Hagen Frickmann, Andreas Erich Zautner, Annette Moter, Judith Kikhney, Ralf Matthias Hagen, Henrik Stender, Sven Poppert
Early identification of microbial pathogens is essential for rational and conservative antibiotic use especially in the case of known regional resistance patterns. Here, we describe fluorescence in situ hybridization (FISH) as one of the rapid methods for easy identification of microbial pathogens, and its advantages and disadvantages for the diagnosis of pathogens in human infections in the laboratory diagnostic routine. Binding of short fluorescence-labeled DNA or nucleic acid-mimicking PNA probes to ribosomes of infectious agents with consecutive analysis by fluorescence microscopy allows identification of bacterial and eukaryotic pathogens at genus or species level...
May 2017: Critical Reviews in Microbiology
https://www.readbyqxmd.com/read/27931152/planting-the-seed-origins-composition-and-postnatal-health-significance-of-the-fetal-gastrointestinal-microbiota
#18
REVIEW
Lisa F Stinson, Matthew S Payne, Jeffrey A Keelan
It has long been assumed that establishment of the fetal microbiome commences with the birthing process. However, recent studies have found bacterial DNA in umbilical cord blood, placenta, amniotic fluid, meconium, and fetal membranes in healthy normal pregnancies, leading to suggestions that the seeding of the fetal microbiome may commence in utero long before delivery. The origins of the microbiota of the fetal gastrointestinal (GI) tract have not yet been conclusively determined, although bacterial translocation from the maternal circulation, or ascension from the vagina, are both likely to be contributing pathways...
May 2017: Critical Reviews in Microbiology
https://www.readbyqxmd.com/read/27869522/current-aspects-of-salmonella-contamination-in-the-us-poultry-production-chain-and-the-potential-application-of-risk-strategies-in-understanding-emerging-hazards
#19
REVIEW
Kalavathy Rajan, Zhaohao Shi, Steven C Ricke
One of the leading causes of foodborne illness in poultry products is Salmonella enterica. Salmonella hazards in poultry may be estimated and possible control methods modeled and evaluated through the use of quantitative microbiological risk assessment (QMRA) models and tools. From farm to table, there are many possible routes of Salmonella dissemination and contamination in poultry. From the time chicks are hatched through growth, transportation, processing, storage, preparation, and finally consumption, the product could be contaminated through exposure to different materials and sources...
May 2017: Critical Reviews in Microbiology
https://www.readbyqxmd.com/read/27868469/critical-review-on-biofilm-methods
#20
REVIEW
Joana Azeredo, Nuno F Azevedo, Romain Briandet, Nuno Cerca, Tom Coenye, Ana Rita Costa, Mickaël Desvaux, Giovanni Di Bonaventura, Michel Hébraud, Zoran Jaglic, Miroslava Kačániová, Susanne Knøchel, Anália Lourenço, Filipe Mergulhão, Rikke Louise Meyer, George Nychas, Manuel Simões, Odile Tresse, Claus Sternberg
Biofilms are widespread in nature and constitute an important strategy implemented by microorganisms to survive in sometimes harsh environmental conditions. They can be beneficial or have a negative impact particularly when formed in industrial settings or on medical devices. As such, research into the formation and elimination of biofilms is important for many disciplines. Several new methodologies have been recently developed for, or adapted to, biofilm studies that have contributed to deeper knowledge on biofilm physiology, structure and composition...
May 2017: Critical Reviews in Microbiology
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