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https://www.readbyqxmd.com/read/28822434/-risk-factors-of-bacterial-nosocomial-infection-after-pediatric-liver-transplantation
#1
H Zhu, W Gao
Objective: To analyze the risk factors of nosocomial infection after liver transplantation in children, so as to provide scientific evidence for the prevention and control of nosocomial infection. Method: Clinical data of 223 pediatric patients undergoing liver transplantation between January 2014 and December 2015 were analyzed retrospectively. Univariate and multivariate analyses were carried out to investigate the risk factors of infection after transplantation. Result: Totally 51 children were infected among the 223 patients, the infection rate was 22...
August 2, 2017: Zhonghua Er Ke za Zhi. Chinese Journal of Pediatrics
https://www.readbyqxmd.com/read/28820151/a-literature-review-and-update-on-the-incidence-and-microbiology-spectrum-of-postcataract-surgery-endophthalmitis-over-past-two-decades-in-india
#2
REVIEW
Prajna Lalitha, Sabyasachi Sengupta, Ravilla D Ravindran, Savitri Sharma, Joveeta Joseph, Vikas Ambiya, Taraprasad Das
PURPOSE: The purpose of this study was to review the incidence and microbiology of acute postcataract surgery endophthalmitis in India. METHODS: Systematic review of English-language PubMed referenced articles on endophthalmitis in India published in the past 21 years (January 1992-December 2012), and retrospective chart review of 2 major eye care facilities in India in the past 5 years (January 2010-December 2014) were done. The incidence data were collected from articles that described "in-house" endophthalmitis and the microbiology data were collected from all articles...
August 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/28819664/antimicrobial-carbon-nanospheres
#3
Yao-Wen Jiang, Ge Gao, Xiaodong Zhang, Hao-Ran Jia, Fu-Gen Wu
Carbon nanomaterials have found numerous applications in various fields. However, their synthesis and functionalization usually require complicated procedures or tough experimental conditions. Herein, we report for the first time the synthesis of a new type of functional nanomaterial, quaternized carbon nanospheres (QCNSs), with superior antibacterial activity via a one-pot hydrothermal treatment of chitosan and hexadecylbetaine (abbreviated as BS-16). During the hydrothermal process, the direct reaction and carbonization between the amine-containing chitosan and the carboxyl-containing BS-16 were realized within only one step...
August 18, 2017: Nanoscale
https://www.readbyqxmd.com/read/28818628/a-prospective-multicentre-study-of-the-epidemiology-and-outcomes-of-bloodstream-infection-in-cirrhotic-patients
#4
Michele Bartoletti, Maddalena Giannella, Russell Lewis, Paolo Caraceni, Sara Tedeschi, Mical Paul, Christoph Schramm, Tony Bruns, Manuela Merli, Nazaret Cobos-Trigueros, Elena Seminari, Pilar Retamar, Patricia Muñoz, Mario Tumbarello, Patrizia Burra, Maria Torrani Cerenzia, Bruno Barsic, Ester Calbo, Alberto Enrico Maraolo, Nicola Petrosillo, Maria Angeles Galan-Ladero, Giampiero D'Offizi, Noa Bar Sinai, Jesus Rodríguez-Baño, Gabriella Verucchi, Mauro Bernardi, Pierluigi Viale
OBJECTIVE: The aim of this study was to describe the current epidemiology of BSI in patients with cirrhosis, analyse predictors of 30-day mortality, and risk factors for antibiotic resistance. METHODS: Cirrhotic patients developing a BSI episode were prospectively included at 19 centres in five countries from September 2014 to December 2015. The discrimination of mortality risk scores for 30-day mortality were compared by area under the receiver operator-risk and Cox-regression models...
August 14, 2017: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/28818544/trends-in-antimicrobial-resistance-in-bloodstream-infection-isolates-at-a-large-urban-hospital-in-malawi-1998-2016-a-surveillance-study
#5
Patrick Musicha, Jennifer E Cornick, Naor Bar-Zeev, Neil French, Clemens Masesa, Brigitte Denis, Neil Kennedy, Jane Mallewa, Melita A Gordon, Chisomo L Msefula, Robert S Heyderman, Dean B Everett, Nicholas A Feasey
BACKGROUND: Bacterial bloodstream infection is a common cause of morbidity and mortality in sub-Saharan Africa, yet few facilities are able to maintain long-term surveillance. The Malawi-Liverpool-Wellcome Trust Clinical Research Programme has done sentinel surveillance of bacteraemia since 1998. We report long-term trends in bloodstream infection and antimicrobial resistance from this surveillance. METHODS: In this surveillance study, we analysed blood cultures that were routinely taken from adult and paediatric patients with fever or suspicion of sepsis admitted to Queen Elizabeth Central Hospital, Blantyre, Malawi from 1998 to 2016...
August 14, 2017: Lancet Infectious Diseases
https://www.readbyqxmd.com/read/28815948/flow-cytometric-analysis-of-viable-bacteria-in-urine-samples-of-febrile-patients-at-the-emergency-department
#6
Anne H Tavenier, Foppie J de Boer, Bijan Moshaver, Sjef J C M van der Leur, Coen A Stegeman, Paul H P Groeneveld
BACKGROUND: Fast and reliable diagnostics are important in febrile patients admitted to the emergency department. Current urine diagnostics are fast but moderately reliable or reliable but time consuming. Flow cytometry (FC) is a new promising technique in the diagnostics of complicated urinary tract infections by counting bacteria in urine samples. The aim of this study is to improve the FC method by counting only viable bacteria. METHODS: Urine was obtained from 135 consecutive febrile patients at the emergency department...
August 16, 2017: Cytometry. Part B, Clinical Cytometry
https://www.readbyqxmd.com/read/28815056/hemojuvelin-regulates-the-innate-immune-response-to-peritoneal-bacterial-infection-in-mice
#7
Qian Wu, Yuanyuan Shen, Yunlong Tao, Jiayu Wei, Hao Wang, Peng An, Zhuzhen Zhang, Hong Gao, Tianhua Zhou, Fudi Wang, Junxia Min
Hereditary hemochromatosis and iron imbalance are associated with susceptibility to bacterial infection; however, the underlying mechanisms are poorly understood. Here, we performed in vivo bacterial infection screening using several mouse models of hemochromatosis, including Hfe (Hfe(-/-) ), hemojuvelin (Hjv(-/-) ), and macrophage-specific ferroportin-1 (Fpn1(fl/fl) ;LysM-Cre(+) ) knockout mice. We found that Hjv(-/-) mice, but not Hfe(-/-) or Fpn1(fl/fl) ;LysM-Cre(+) mice, are highly susceptible to peritoneal infection by both Gram-negative and Gram-positive bacteria...
2017: Cell Discovery
https://www.readbyqxmd.com/read/28814746/rewiring-of-the-ftsh-regulatory-network-by-a-single-nucleotide-change-in-saes-of-staphylococcus-aureus
#8
Qian Liu, Mo Hu, Won-Sik Yeo, Lei He, Tianming Li, Yuanjun Zhu, Hongwei Meng, Yanan Wang, Hyunwoo Lee, Xiaoyun Liu, Min Li, Taeok Bae
In the Gram-positive pathogen Staphylococcus aureus, the membrane-bound ATP-dependent metalloprotease FtsH plays a critical role in resistance to various stressors. However, the molecular mechanism of the FtsH functions is not known. Here, we identified core FtsH target proteins in S. aureus. In the strains Newman and USA300, the abundance of 33 proteins were altered in both strains, of which 11 were identified as core FtsH substrate protein candidates. In the strain Newman and some other S. aureus strains, the sensor histidine kinase SaeS has an L18P (T53C in saeS) substitution, which transformed the protein into an FtsH substrate...
August 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28811754/comparative-genome-analysis-of-rathayibacter-tritici-ncppb-1953-with-rathayibacter-toxicus-strains-can-facilitate-studies-on-mechanisms-of-nematode-association-and-host-infection
#9
Jungwook Park, Pyeong An Lee, Hyun-Hee Lee, Kihyuck Choi, Seon-Woo Lee, Young-Su Seo
Rathayibacter tritici, which is a Gram positive, plant pathogenic, non-motile, and rod-shaped bacterium, causes spike blight in wheat and barley. For successful pathogenesis, R. tritici is associated with Anguina tritici, a nematode, which produces seed galls (ear cockles) in certain plant varieties and facilitates spread of infection. Despite significant efforts, little research is available on the mechanism of disease or bacteria-nematode association of this bacterium due to lack of genomic information. Here, we report the first complete genome sequence of R...
August 2017: Plant Pathology Journal
https://www.readbyqxmd.com/read/28811241/utility-of-prior-cultures-in-predicting-antibiotic-resistance-of-bloodstream-infections-due-to-gram-negative-pathogens-a-multicenter-observational-cohort-study
#10
Derek R MacFadden, Bryan Coburn, Nirav Shah, Ari Robicsek, Rachel Savage, Marion Elligsen, Nick Daneman
OBJECTIVES: Appropriate empiric antibiotic therapy in patients with bloodstream infections due to Gram-negative pathogens can improve outcomes. We evaluated the utility of prior microbiologic results for guiding empiric treatment in Gram-negative bloodstream infections. METHODS: We conducted a multi-center observational cohort study, in two large health systems in Canada and the United States, including 1,832 hospitalized patients with Gram-negative bloodstream infection (community, hospital, and ICU acquired) from April 2010 to March 2015...
August 12, 2017: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/28810329/-distribution-and-drug-resistance-of-pathogens-at-hematology-department-of-jiangsu-province-from-2014-to-2015-results-from-a-multicenter-retrospective-study
#11
Y K Wan, W Sang, B Chen, Y G Yang, L Q Zhang, A N Sun, Y J Liu, Y Xu, Y P Cai, C B Wang, Y F Shen, Y W Jiang, X Y Zhang, W Xu, M Hong, T Chen, R R Xu, F Li, Y L Xu, Y Xue, Y L Lu, Z M He, W M Dong, Z Chen, M H Ji, Y Y Yang, L J Zhai, Y Zhao, G Q Wu, J H Ding, J Cheng, W B Cai, Y M Sun, J Ouyang
Objective: To describe the distribution and drug resistance of pathogens at hematology department of Jiangsu Province from 2014 to 2015 to provide reference for empirical anti-infection treatment. Methods: Pathogens were from hematology department of 26 tertiary hospitals in Jiangsu Province from 2014 to 2015. Antimicrobial susceptibility testing was carried out according to a unified protocol using Kirby-Bauer method or agar dilution method. Collection of drug susceptibility results and corresponding patient data were analyzed...
July 14, 2017: Zhonghua Xue Ye Xue za Zhi, Zhonghua Xueyexue Zazhi
https://www.readbyqxmd.com/read/28807880/-broad-spectrum-bactericidal-activity-of-a-new-bioactive-grafting-material-f18-against-clinically-important-bacterial-strains
#12
M T Souza, L A Campanini, C R Chinaglia, O Peitl, E D Zanotto, C W O Souza
Infection is the most relevant surgical complication in implant or grafting procedures. Osteomyelitis and other chronic conditions pose a constant challenge in the current practice of medicine. In this context, a grafting biomaterial that possesses antibacterial properties combined with bioactivity could have great clinical impact. Researchers at the Vitreous Materials Laboratory (LaMaV-UFSCar) recently developed a glass composition, F18, which presents an improved workability range combined with high bioactivity...
August 11, 2017: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/28807813/norovirus-loads-in-stool-specimens-of-cancer-patients-with-norovirus-gastroenteritis
#13
Taojun He, Tracy A McMillen, Yuanyuan Qiu, Liang Hua Chen, Xuedong Lu, Xiao-Li Pang, Mini Kamboj, Yi-Wei Tang
In immunocompromised patients with norovirus (NoV) gastroenteritis, the relationship between fecal NoV load and clinical complications has not been examined. In this study, a validated real-time quantitative PCR (qPCR) assay was used to determine viral loads NoV genogroup I and II (GI and GII) in NoV positive stool specimens of cancer patients. A total of 234 specimens from 152 patients were positive for NoV, including 201 of GII and 33 of GI. Geometric mean of logarithmic copies (GMLC) per gram of stool (w/w) of NoV-GII were 9...
August 11, 2017: Journal of Molecular Diagnostics: JMD
https://www.readbyqxmd.com/read/28805287/nongenetically-modified-lactococcus-lactis-adjuvanted-vaccination-enhanced-innate-immunity-against-helicobacter-pylori
#14
Wei Liu, Zhoulin Tan, Hai Liu, Zhiqin Zeng, Shuanghui Luo, Huimin Yang, Lufeng Zheng, Tao Xi, Yingying Xing
BACKGROUND: Gram-positive enhancer matrix particles (GEM) produced by Lactococcus lactis can enhance vaccine-induced immune response. However, the mechanism under which this adjuvant mounts the efficacy of orally administered vaccines remains unexplored. MATERIALS AND METHODS: We used a prophylactic mice model to investigate the mechanism of GEM-adjuvanted vaccination. Helicobacter pylori urease-specific antibody response was monitored and detected in murine serum by ELISA...
August 14, 2017: Helicobacter
https://www.readbyqxmd.com/read/28804572/bacterial-infections-post-living-donor-liver-transplantation-in-egyptian-hepatitis-c-virus-cirrhotic-patients-a-single-center-study
#15
Mohamed F Montasser, Nadia A Abdelkader, Sara M Abdelhakam, Hany Dabbous, Iman F Montasser, Yasmine M Massoud, Waleed Abdelmoaty, Shereen A Saleh, Mohamed Bahaa, Hany Said, Mahmoud El-Meteini
AIM: To determine risk factors, causative organisms and antimicrobial resistance of bacterial infections following living-donor liver transplantation (LDLT) in cirrhotic patients. METHODS: This prospective study included 45 patients with hepatitis C virus-related end-stage liver disease who underwent LDLT at Ain Shams Center for Organ Transplant, Cairo, Egypt from January 2014 to November 2015. Patients were followed-up for the first 3 mo after LDLT for detection of bacterial infections...
July 18, 2017: World Journal of Hepatology
https://www.readbyqxmd.com/read/28803930/identification-of-neuroglobin-as-a-novel-player-in-anti-bacterial-responses-in-amphioxus
#16
Yu Bai, Shousheng Liu, Xia Wang, Xiaoyuan Du, Guangdong Ji, Shicui Zhang
Theoretical considerations support various functions of neuroglobin (Ngb), but further studies are required for full characterization of these functions. In this study, we identified the presence of a single Ngb gene, BjNgb, in the amphioxus Branchiostoma japonicum. BjNgb was expressed in various tissues including the notochord, gonads (ovary and testis) and gill, and up-regulated significantly in response to the challenge with LPS and LTA, suggesting involvement in immune response of amphioxus against bacterial infection...
August 10, 2017: Developmental and Comparative Immunology
https://www.readbyqxmd.com/read/28803549/comparative-gut-microbiota-and-resistome-profiling-of-intensive-care-patients-receiving-selective-digestive-tract-decontamination-and-healthy-subjects
#17
Elena Buelow, Teresita D J Bello González, Susana Fuentes, Wouter A A de Steenhuijsen Piters, Leo Lahti, Jumamurat R Bayjanov, Eline A M Majoor, Johanna C Braat, Maaike S M van Mourik, Evelien A N Oostdijk, Rob J L Willems, Marc J M Bonten, Mark W J van Passel, Hauke Smidt, Willem van Schaik
BACKGROUND: The gut microbiota is a reservoir of opportunistic pathogens that can cause life-threatening infections in critically ill patients during their stay in an intensive care unit (ICU). To suppress gut colonization with opportunistic pathogens, a prophylactic antibiotic regimen, termed "selective decontamination of the digestive tract" (SDD), is used in some countries where it improves clinical outcome in ICU patients. Yet, the impact of ICU hospitalization and SDD on the gut microbiota remains largely unknown...
August 14, 2017: Microbiome
https://www.readbyqxmd.com/read/28802796/antibacterial-prophylaxis-for-gram-positive-and-gram-negative-infections-in-cranial-surgery-a-meta-analysis
#18
REVIEW
Pranav Abraham, Nayan Lamba, Michael Acosta, Joanna Gholmie, Hassan Y Dawood, Matthew Vestal, Kevin Huang, Maher Hulou, Morteza Asgarzadeh, Hasan Zaidi, Rania A Mekary, Timothy R Smith
BACKGROUND: Perioperative antibiotic prophylaxis against gram positive and gram negative infections is considered standard of care in the perioperative management of patients undergoing cranial surgery. The antibiotic regimen which best reduces the risk of surgical site infections (SSIs) remains controversial. OBJECTIVES: A systematic literature review and meta-analysis were conducted to examine the effect of various prophylactic antibiotics on infection incidence among patients undergoing cranial surgeries...
August 9, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28802182/inflammatory-markers-as-risk-factors-for-infection-with-multidrug-resistant-microbes-in-diabetic-foot-subjects
#19
Saba Noor, Abhijit Girish Borse, Maaz Ozair, Alok Raghav, Iqbal Parwez, Jamal Ahmad
BACKGROUND: Diabetic foot ulcers (DFUs), a dreadful microvascular complication of diabetes is responsible for substantial increase in morbidity and mortality. Infection, not a cause, but a consequence in DFUs that accounts for minor or major limb loss. The current study aimed to evaluate the microbial etiology of infected diabetic foot ulcers in northern tertiary care hospital, assessment of risk factors and role of inflammatory markers involved in colonization of multidrug-resistant organisms (MDROs) and their impact on the outcome...
May 3, 2017: Foot
https://www.readbyqxmd.com/read/28799523/bactericidal-activity-of-the-ti-13nb-13zr-alloy-against-different-species-of-bacteria-related-with-implant-infection
#20
John-Jairo Aguilera-Correa, Ana Conde, Maria-Angeles Arenas, Juan-Jose de-Damborenea, Miguel Marin, Antonio L Doadrio, Jaime Esteban
The Ti-6Al-4V alloy is one of the most commonly used in orthopedic surgery. Despite its advantages, there is an increasing need to use new titanium alloys with no toxic elements and improved biomechanical properties, such as Ti-13Nb-13Zr. Prosthetic joint infections (PJI) are mainly caused by Gram-positive bacteria; however, Gram-negative bacteria are a growing problem due to associated multidrug resistance. In this study, the bacterial adherence and viability on the Ti-13Nb-13Zr alloy have been compared to that of the Ti-6Al-4V alloy using 16 collection and clinical strains of bacterial species related to PJI: Staphylococcus aureus, Staphylococcus epidermidis, Escherichia coli, and Pseudomonas aeruginosa...
August 11, 2017: Biomedical Materials
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