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https://www.readbyqxmd.com/read/28192237/untargeted-next-generation-sequencing-based-first-line-diagnosis-of-infection-in-immunocompromised-adults-a-multicentre-blinded-prospective-study
#1
Perrine Parize, Erika Muth, Clémence Richaud, Marlène Gratigny, Benoit Pilmis, Arnaud Lamamy, Jean-Luc Mainardi, Justine Cheval, Louise de Visser, Florence Jagorel, Laura Ben Yahia, Geraldine Bamba, Myriam Dubois, Olivier Join-Lambert, Marianne Leruez-Ville, Xavier Nassif, Agnes Lefort, Fanny Lanternier, Felipe Suarez, Olivier Lortholary, Marc Lecuit, Marc Eloit
OBJECTIVE: Infections are the major cause of morbidity and mortality in immunocompromised patients. Improving microbiological diagnosis in these patients is of paramount clinical importance. METHODS: We performed this multicentre, blinded, prospective, proof-of-concept study, to compare untargeted next-generation sequencing with conventional microbiological methods for first-line diagnosis of infection in 101 immunocompromised adults. Patients were followed for 30 days and their blood samples, and in some cases nasopharyngeal swabs and/or biological fluids, were analysed...
February 10, 2017: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/28139956/bacterial-microbiota-in-harbor-seals-phoca-vitulina-from-the-north-sea-of-schleswig-holstein-germany-around-the-time-of-morbillivirus-and-influenza-epidemics
#2
Ursula Siebert, Marion Rademaker, Sophie A Ulrich, Peter Wohlsein, Katrin Ronnenberg, Ellen Prenger-Berninghoff
We present microbiologic findings in harbor seal (phoca; Phoca vitulina ) carcasses collected from the North Sea of Schleswig-Holstein, Germany, 1996-2014, and interpret results in relation to potential variations caused by phocine distemper virus and influenza A virus mass mortalities. We conducted microbiologic investigations on 2,124 tissue samples from lung, liver, kidney, spleen, intestine, and mesenteric lymph nodes from 549 dead harbor seals of the German North Sea. A large variety of bacteria, including potentially pathogenic species such as Bordetella bronchiseptica , Brucella spp...
January 31, 2017: Journal of Wildlife Diseases
https://www.readbyqxmd.com/read/28109329/what-makes-a-prion-infectious-proteins-from-animals-to-yeast
#3
K S MacLea
While philosophers in ancient times had many ideas for the cause of contagion, the modern study of infective agents began with Fracastoro's 1546 proposal that invisible "spores" spread infectious disease. However, firm categorization of the pathogens of the natural world would need to await a mature germ theory that would not arise for 300 years. In the 19th century, the earliest pathogens described were bacteria and other cellular microbes. By the close of that century, the work of Ivanovsky and Beijerinck introduced the concept of a virus, an infective particle smaller than any known cell...
2017: International Review of Cell and Molecular Biology
https://www.readbyqxmd.com/read/27891182/case-control-study-of-diarrheal-disease-etiology-in-individuals-over-5%C3%A2-years-in-southwest-china
#4
Shun-Xian Zhang, Chun-Li Yang, Wen-Peng Gu, Lin Ai, Emmanuel Serrano, Pin Yang, Xia Zhou, Shi-Zhu Li, Shan Lv, Zhi-Sheng Dang, Jun-Hu Chen, Wei Hu, Li-Guang Tian, Jia-Xu Chen, Xiao-Nong Zhou
BACKGROUND: Acute diarrhea is one of the major public health problems worldwide. Most of studies on acute diarrhea have been made on infants aged below 5 years and few efforts have been made to identify the etiological agents of acute diarrhea in people over five, especially in China. METHODS: 271 diarrhea cases and 149 healthy controls over 5 years were recruited from four participating hospitals between June 2014 and July 2015. Each stool specimen was collected to detect a series of enteric pathogens, involving five viruses (Rotavirus group A, RVA; Norovirus, NoV; Sapovirus, SaV; Astrovirus, As; and Adenovirus, Ad), seven bacteria (diarrheagenic Escherichia coli, DEC; non-typhoidal Salmonella, NTS; Shigella spp...
2016: Gut Pathogens
https://www.readbyqxmd.com/read/27872722/production-of-monoclonal-antibody-against-recombinant-ns3-protein-of-bovine-viral-diarrhea-virus-nadl-strain
#5
Masood Reza Seyfi Abad Shapouri, Maryam Ekhtelat, Masood Ghorbanpoor Najaf Abadi, Mohsen Lotfi, Mohamad Rashno
This study was conducted to investigate the prevalence of subclinical mastitis caused by Staphylococcus spp. in ewes in West-Azerbaijan province of Iran. Molecular characterization of isolated Staphylococcus spp. from diseased ewes were performed using polymerase chain reaction (PCR) followed by restriction fragment length polymorphism (RFLP) and DNA sequencing of glyceraldehyde-3-phosphate dehydrogenase (gap) gene. Also, antibiotic resistance of staphylococcal isolates against different antibiotics was investigated...
2016: Veterinary Research Forum
https://www.readbyqxmd.com/read/27853598/the-evolutionary-ecology-of-molecular-replicators
#6
Sean Nee
By reasonable criteria, life on the Earth consists mainly of molecular replicators. These include viruses, transposons, transpovirons, coviruses and many more, with continuous new discoveries like Sputnik Virophage. Their study is inherently multidisciplinary, spanning microbiology, genetics, immunology and evolutionary theory, and the current view is that taking a unified approach has great power and promise. We support this with a new, unified, model of their evolutionary ecology, using contemporary evolutionary theory coupling the Price equation with game theory, studying the consequences of the molecular replicators' promiscuous use of each others' gene products for their natural history and evolutionary ecology...
August 2016: Royal Society Open Science
https://www.readbyqxmd.com/read/27825484/acanthamoeba-spp-as-a-universal-host-for-pathogenic-microorganisms-one-bridge-from-environment-to-host-virulence
#7
REVIEW
Allan J Guimaraes, Kamilla Xavier Gomes, Juliana Reis Cortines, José Mauro Peralta, Regina H Saramago Peralta
Free-living amoebas (FLA) are ubiquitous environmental protists that have enormously contributed to the microbiological contamination of water sources. FLAs have displayed resistance to environmental adversities and germicides and have played important roles in the population control of microbial communities due to its predatory behavior and microbicidal activity. However, some organisms have developed resistance to the intracellular milieu of amoebas, as in the case of Acanthamoebas, which in turn, have been functioning as excellent reservoirs for amoeba-resistant microorganisms (ARMs), such as bacteria, viruses and fungi...
December 2016: Microbiological Research
https://www.readbyqxmd.com/read/27799762/c-reactive-protein-in-outpatients-with-acute-exacerbation-of-copd-its-relationship-with-microbial-etiology-and-severity
#8
Miguel Gallego, Xavier Pomares, Silvia Capilla, Maria Angeles Marcos, David Suárez, Eduard Monsó, Concepción Montón
BACKGROUND: C-reactive protein (CRP) measurement has proven valuable for detecting exacerbations, but its usefulness in predicting etiology remains controversial. Likewise, its potential value as a marker of severity, which is well established in patients with pneumonia, remains unproven in chronic obstructive pulmonary disease (COPD) exacerbations. METHODS: A cohort study of 118 patients with severe COPD and acute infectious exacerbations were included and followed up over 1 year...
2016: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/27795876/a-study-of-parasitic-and-bacterial-pathogens-associated-with-diarrhea-in-hiv-positive-patients
#9
Siddharth Shah, Vaishali Kongre, Varun Kumar, Renu Bharadwaj
INTRODUCTION: Diarrhea is a common complication of acquired immune deficiency syndrome (AIDS), occurring in almost 90% of AIDS patients in developing countries like India. The present study was aimed to determine the prevalence and microbiological profile of pathogens associated with diarrhea in human immunodeficiency virus (HIV) positive patients and their relation to CD4 counts. MATERIALS AND METHODS: Forty-five successive HIV-positive patients, 27 with diarrhea (study group) and 18 without diarrhea (control group), were included in the three-month study...
September 27, 2016: Curēus
https://www.readbyqxmd.com/read/27790507/fungal-infection-in-thermal-burns-a-prospective-study-in-a-tertiary-care-centre
#10
Sanjeev Sharma, Deepak Bajaj, Pritika Sharma
INTRODUCTION: Burn Wound Infection (BWI) is primarily caused by aerobic bacteria followed by fungi, anaerobes and viruses. There has been a worldwide decrease in incidence of bacterial infections in burns due to better patient care and availability of effective antibiotics. Consequently, the fungal burn wound infection has shown an increasing trend. AIM: The aim of study was to assess the frequency of fungal infections in thermal burn wounds with respect to age of wounds, total body surface involved, depth of burns and to assess common fungal pathogens...
September 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/27748568/how-do-we-make-indoor-environments-and-healthcare-settings-healthier
#11
Jack A Gilbert
It is now well accepted that our modern lifestyle has certain implications for our health (Schaub et al., ), mainly as a result of our willingness to remove ourselves from the biological diversity of our natural environments (Roduit et al., ), while still being drawn inextricably to interact with it (Kellert and Wilson, ). Much of our interaction with the biological world is shaped by our interaction with the microbiological world. The bacteria, fungi, viruses, archaea and protists that comprise the microbiome of this planet, are also key to the development and normal functioning of our bodies...
January 2017: Microbial Biotechnology
https://www.readbyqxmd.com/read/27726817/skin-and-soft-tissue-infections
#12
Anne Spichler Moffarah, Mayar Al Mohajer, Bonnie L Hurwitz, David G Armstrong
The skin is colonized by a diverse collection of microorganisms which, for the most part, peacefully coexist with their hosts. Skin and soft tissue infections (SSTIs) encompass a variety of conditions; in immunocompromised hosts, SSTIs can be caused by diverse microorganisms-most commonly bacteria, but also fungi, viruses, mycobacteria, and protozoa. The diagnosis of SSTIs is difficult because they may commonly masquerade as other clinical syndromes or can be a manifestation of systemic disease. In immunocompromised hosts, SSTI poses a major diagnostic challenge, and clinical dermatological assessment should be initially performed; to better identify the pathogen and to lead to appropriate treatment, etiology should include cultures of lesions and blood, biopsy with histology, specific microbiological analysis with special stains, molecular techniques, and antigen-detection methodologies...
August 2016: Microbiology Spectrum
https://www.readbyqxmd.com/read/27615035/extended-microbiological-characterization-of-g%C3%A3-ttingen-minipigs-porcine-cytomegalovirus-and-other-viruses
#13
Vladimir A Morozov, Elena Plotzki, Avi Rotem, Uriel Barkai, Joachim Denner
BACKGROUND: To prevent transmission of zoonotic microorganisms from pig transplants to human recipients when performing xenotransplantation using pig cells, tissues, or organs, donor pigs have to be carefully characterized. Göttingen minipigs (GöMP) are often used for various biomedical investigations and are well characterized concerning the presence of numerous bacteria, fungi, viruses, and parasites. Recently, we studied the prevalence and expression of porcine endogenous retroviruses and the prevalence of hepatitis E virus (HEV) in GöMP...
November 2016: Xenotransplantation
https://www.readbyqxmd.com/read/27609086/bacteriophages-in-clinical-samples-can-interfere-with-microbiological-diagnostic-tools
#14
Maryury Brown-Jaque, Maite Muniesa, Ferran Navarro
Bacteriophages are viruses that infect bacteria, and they are found everywhere their bacterial hosts are present, including the human body. To explore the presence of phages in clinical samples, we assessed 65 clinical samples (blood, ascitic fluid, urine, cerebrospinal fluid, and serum). Infectious tailed phages were detected in >45% of ascitic fluid and urine samples. Three examples of phage interference with bacterial isolation were observed. Phages prevented the confluent bacterial growth required for an antibiogram assay when the inoculum was taken from an agar plate containing lysis plaques, but not when taken from a single colony in a phage-free area...
2016: Scientific Reports
https://www.readbyqxmd.com/read/27495908/the-river-ruhr-an-urban-river-under-particular-interest-for-recreational-use-and-as-a-raw-water-source-for-drinking-water-the-collaborative-research-project-safe-ruhr-microbiological-aspects
#15
Martin Strathmann, Marina Horstkott, Christoph Koch, Uta Gayer, Jost Wingender
Along the intense industrialization of the Ruhr valley (Germany), the River Ruhr became increasingly polluted. Over time, using it for recreational purposes became a serious health hazard and bathing was banned due to chemical and microbiological risks. The purpose of the collaborative project "Safe Ruhr" was to verify the current status and to provide a scientific basis for lifting the bathing ban. As the river also provides a raw water source for drinking water production, it was investigated how well the treatment procedures control possible hygienic risks...
October 2016: International Journal of Hygiene and Environmental Health
https://www.readbyqxmd.com/read/27474246/-molecular-diagnostic-methods-of-respiratory-infections-has-the-scheme-diagnosis-changed
#16
Jordi Vila Estapé, Yuliya Zboromyrska, Andrea Vergara Gómez, Izaskun Alejo Cancho, Elisa Rubio García, Miriam José Álvarez-Martínez, Jorge Puig de la Bellacasa Brugada, M Ángeles Marcos Maeso
Lower respiratory tract infections remain one of the most common causes of mortality worldwide, which is why early diagnosis is crucial. Traditionally the microbiological diagnosis of these infections has been based on conventional methods including culture on artificial media for isolation of bacteria and fungi and cell cultures for virus and antibody or antigen detection using antigen-antibody reactions. The main drawback of the above mentioned methods is the time needed for an etiological diagnosis of the infection...
July 2016: Enfermedades Infecciosas y Microbiología Clínica
https://www.readbyqxmd.com/read/27470996/bacterial-and-viral-contamination-of-breathing-circuits-after-extended-use-an-aspect-of-patient-safety
#17
S Dubler, S Zimmermann, M Fischer, P Schnitzler, T Bruckner, M A Weigand, U Frank, S Hofer, A Heininger
BACKGROUND: In the past, anaesthetic breathing circuits were identified as a source of pathogen transmission. It is still debated, whether breathing circuits combined with breathing system filters can be safely used for more than 1 day. The aim of this study was to evaluate the transmission risk of bacteria and also viruses via breathing circuits after extended use. METHODS: The inner and outer surface of 102 breathing circuits used for 1 day and of 101 circuits used for 7 days were examined for bacteria and viruses...
October 2016: Acta Anaesthesiologica Scandinavica
https://www.readbyqxmd.com/read/27424825/pathogen-profiles-and-molecular-epidemiology-of-respiratory-viruses-in-japanese-inpatients-with-community-acquired-pneumonia
#18
Daisuke Kurai, Yoshiko Sasaki, Takeshi Saraya, Haruyuki Ishii, Hiroyuki Tsukagoshi, Kunihisa Kozawa, Akihide Ryo, Taisei Ishioka, Makoto Kuroda, Kazunori Oishi, Hajime Takizawa, Hirokazu Kimura
BACKGROUND: The etiological profile of viruses among adult patients with community-acquired pneumonia (CAP) has not been characterized yet. The aim of this study was twofold: first, investigate the pathogen profiles and the molecular epidemiology of respiratory viruses among Japanese CAP patients; and second, explore the clinical significance of viral infections. METHODS: A cross-sectional observational study was conducted at Kyorin University Hospital. To identify respiratory pathogens, hospitalized CAP patients were enrolled, and reverse transcriptase-polymerase chain reaction technology was applied alongside conventional microbiological methods...
July 2016: Respiratory Investigation
https://www.readbyqxmd.com/read/27421128/-community-acquired-pneumonia-treatment-options-according-to-the-international-recommendations
#19
Katarzyna Lewandowska, Jan Kuś
Pneumonia remains one of the main reasons of heath care system utilization. Quick diagnosis and prompt treatment initiation determine favorable outcome. Empirical antibiotic treatment allows to achieve treatment success in most patients. Treatment recommendations are based on big epidemiological trials. Nevertheless, it is sometimes necessary to know the definite etiologic factor of pneumonia. In these cases microbiological diagnostics is useful, i.e. sputum microscopy and culture, blood culture, bronchial lavage culture, bacterial antigen tests in urine, molecular tests...
2016: Wiadomości Lekarskie: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/27420109/the-current-weight-of-evidence-of-the-microbiological-profile-associated-with-peri-implantitis-a-systematic-review
#20
Paula Juliana Pérez-Chaparro, Poliana Mendes Duarte, Jamil Awad Shibli, Sheyla Montenegro, Sílvia Lacerda Heluy, Luciene Cristina Figueiredo, Marcelo Faveri, Magda Feres
BACKGROUND: There is still no consensus as regards the microorganisms that may be considered true peri-implant pathogens. Therefore, the aim of this systematic review was to determine the weight of evidence for the microorganisms related to peri-implantitis based on the results of "association studies". METHODS: This review was performed following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA). Two independent researchers searched the PubMed/Medline, Embase and Cochrane Library databases up to August 4(th) 2015, for studies comparing the microbiological outcomes of subgingival biofilm samples from healthy implants and implants with peri-implantitis...
July 15, 2016: Journal of Periodontology
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