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gram-negative bacteremia

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https://www.readbyqxmd.com/read/28317027/the-type-a-and-type-b-polysaccharide-capsules-predominate-in-an-international-collection-of-invasive-kingella-kingae-isolates
#1
Eric A Porsch, Kimberly F Starr, Pablo Yagupsky, Joseph W St Geme
Kingella kingae is an encapsulated Gram-negative bacterium and an important etiology of osteoarticular infections in young children. A recent study examining a diverse collection of carrier and invasive K. kingae isolates from Israel revealed four distinct polysaccharide capsule types. In this study, to obtain a global view of K. kingae capsule type diversity, we examined an international collection of isolates using a multiplex PCR approach. The collection contained all four previously identified capsule types and no new capsule types...
March 2017: MSphere
https://www.readbyqxmd.com/read/28291719/immunization-with-outer-membrane-proteins-oprf-and-opri-and-flagellin-b%C3%A2-protects-mice-from-pulmonary-infection-with-mucoid-and-nonmucoid-pseudomonas-aeruginosa
#2
Ramadan Hassan, Wael El-Naggar, Abeer M Abd El-Aziz, Mona Shaaban, Hany I Kenawy, Youssif M Ali
BACKGROUND: Pseudomonas aeruginosa is a Gram-negative opportunistic bacterium, which considered as a common cause of nosocomial infection and life-threatening complications in immunocompromized and cystic fibrosis patients. Here, we evaluate the protective effect of recombinant vaccines composed of outer membrane proteins OprF and OprI alone or in combination with flagellin B against mucoid and nonmucoid pseudomonas infection. METHODS: BALB/C mice were immunized subcutaneous using OprF and OprI with or without flagellin B and antibody titers were determined...
February 20, 2017: Journal of Microbiology, Immunology, and Infection, Wei Mian Yu Gan Ran za Zhi
https://www.readbyqxmd.com/read/28282773/association-of-periodontitis-with-preterm-birth-and-low-birth-weight-a-comprehensive-review
#3
Alberto Puertas, Antonio Magan-Fernandez, Vanessa Blanc, Laura Revelles, Francisco O'Valle, Elena Pozo, Ruben León, Francisco Mesa
It is estimated that six million perinatal deaths occur every year worldwide, with premature birth being the main cause. Scientific evidence has shown that there is an association between periodontal health during pregnancy and adverse outcomes of labor, although interventional studies based on the treatment of periodontitis have failed to document an impact on reducing the incidence of preterm birth (PB) or low birth weight (LBW). Two pathogenic mechanisms have been proposed to explain this association. The direct pathway is based on the presence of gram-negative anaerobic bacteremia originating in the gingival biofilm, whereas the indirect pathway involves the production of pro-inflammatory markers which enter the bloodstream from the gingival submucosa...
February 28, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28255504/usefulness-of-urinoculture-to-patients-with-dementia-and-femoral-neck-fracture-at-admission-to-hospital-preliminary-results
#4
Laura Garcia-Nuño, Carlos Villamil, Araceli González-Cuevas, David Martí, Silvia Capilla, Maria José Vives, Xavier Oncins, Pere Torner, Juan Castellanos, Lluís Font-Vizcarra
INTRODUCTION: While preoperative urinary tract infection (UTI) has the potential to cause bacteremia and postsurgical acute prosthetic joint infections (APJIs), the influence of asymptomatic bacteriuria (AB) in these infections remains unclear. So the majority of guidelines not recommend the treatment of AB prior to the surgery. However, as patients with dementia usually cannot explain the symptoms of dysuria, the differential diagnosis between AB and UTI may be very difficult in this group of patients...
March 2017: Geriatric Orthopaedic Surgery & Rehabilitation
https://www.readbyqxmd.com/read/28241746/factors-influencing-mortality-in-abdominal-solid-organ-transplant-recipients-with-multidrug-resistant-gram-negative-bacteremia
#5
Bingbing Qiao, Jianzhen Wu, Qiquan Wan, Sheng Zhang, Qifa Ye
BACKGROUND: Although multidrug-resistant (MDR) gram-negative bacteremia (GNB) has been recognized as an important cause of morbidity and mortality among abdominal solid organ transplant (ASOT) recipients, there are no data on its prognostic factors after an interim standard definition of MDR was proposed in 2012. The objective of this study was to describe the epidemiology, microbiology, and predictors of infection-related 30-day mortality in ASOT recipients with MDR GNB. METHODS: We performed a retrospective, double-center analysis of ASOT patients with MDR GNB over a 13-year study period...
February 27, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28224775/laboratory-identification-of-leptotrichia-species-isolated-from-bacteremia-patients-at-a-single-institution
#6
Eun Hye Cho, Kyung Sun Park, Mina Yang, Dong Joon Song, Hee Jae Huh, Chang Seok Ki, Nam Yong Lee
We describe the laboratory identification of Leptotrichia species from clinical isolates collected over a six-year period. Five isolates from blood cultures were identified as Leptotrichia species. Gram stain showed large, fusiform, gram-negative or -variable bacilli. Identification based on biochemical testing was unsuccessful; however, matrix-assisted laser desorption/ionization time-of-flight mass spectrometry proved to be a useful tool for identifying Leptotrichia species to the genus level. Species level identification was successfully achieved by using 16S ribosomal RNA gene sequencing...
May 2017: Annals of Laboratory Medicine
https://www.readbyqxmd.com/read/28219601/syndrome-of-inappropriate-anti-diuretic-hormone-secretion-secondary-to-strongyloides-stercoralis-infection-in-an-allogeneic-stem-cell-transplant-patient-a-case-report-and-literature-review
#7
M Khushman, M I Morris, L Diaz, M Goodman, D Pereira, K Fuller, M Garcia-Buitrago, B Moshiree, S Zelaya, A Nayer, C L Benjamin, K V Komanduri
Syndrome of inappropriate anti-diuretic hormone (SIADH) has been reported to be associated with systemic Strongyloides stercoralis. Here, we report a case of a stem cell transplant (SCT) recipient who developed severe SIADH secondary to systemic S Stercoralis. The SIADH resolved quickly after treating the systemic S Stercoralis with ivermectin. A systematic review of the literature was performed by PubMed, Scopus, and Cochrane database search. Only eight cases of S Stercoralis in allogeneic SCT recipients have been previously reported...
March 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28207376/hookworm-infection-in-south-american-fur-seal-arctocephalus-australis-pups
#8
M Seguel, F Muñoz, M J Navarrete, E Paredes, E Howerth, N Gottdenker
Tissues of South American fur seal pups naturally infected with hookworms ( Uncinaria sp) were examined. Hookworm infection was found in nearly all pups examined (132/140, 94%), and hookworm enteritis with secondary bacteremia was considered the cause of death in 46 (35%) pups. Common findings in these pups included severe hemorrhagic enteritis and numerous (mean intensity = 761.8) hookworms in the jejunum. Hookworms were recovered from the abdominal cavity in 12 of 55 pups (22%) examined through peritoneal wash; these pups had an average of 1343...
March 2017: Veterinary Pathology
https://www.readbyqxmd.com/read/28205160/non-fermentative-gram-negative-rods-bacteremia-in-children-with-cancer-a-14-year-single-center-experience
#9
D Averbuch, C Avaky, M Harit, P Stepensky, I Fried, T Ben-Ami, V Temper, Y Peled, H Troen, R Masarwa, W Abu Ahmad, M Weintraub, S Revel-Vilk, D Engelhard
PURPOSE: Data on non-fermentative Gram-negative rods (NFGNR) bacteremia in children with malignancies are limited. The aim of this study was to present clinical picture, antimicrobial susceptibility pattern, risk factors for resistance and outcome in NFGNR bacteremia in children with cancer. METHODS: All episodes of NFGNR bacteremia occurring during 2001-2014 in children with cancer in a tertiary-care hospital were retrospectively analyzed. Pseudomonas and Acinetobacter spp...
February 15, 2017: Infection
https://www.readbyqxmd.com/read/28203469/salmonella-enterica-serotype-typhi-bacteremia-complicating-pregnancy-in-the-third-trimester
#10
George F Guirguis, Krunal Patel, Lisa Gittens-Williams, Joseph J Apuzzio, Kristina Martimucci, Shauna F Williams
Background. Salmonella enterica serotype Typhi (S. Typhi) is an anaerobic gram-negative enteric rod that causes infection when contaminated food or water is ingested and may cause illness in pregnancy. Case. This is a patient who presented at 31 weeks' gestation with abdominal pain and fever and was diagnosed with S. Typhi bacteremia. Conclusion. S. Typhi should be considered in febrile patients with recent travel presenting with abdominal discomfort with or without elevated liver enzymes.
2017: Case Reports in Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28194286/central-venous-catheter-related-bloodstream-infection-with-kocuria-kristinae-in-a-patient-with-propionic-acidemia
#11
Masato Kimura, Eichiro Kawai, Hisao Yaoita, Natsuko Ichinoi, Osamu Sakamoto, Shigeo Kure
Kocuria kristinae is a catalase-positive, coagulase-negative, Gram-positive coccus found in the environment and in normal skin and mucosa in humans; however, it is rarely isolated from clinical specimens and is considered a nonpathogenic bacterium. We describe a case of catheter-related bacteremia due to K. kristinae in a young adult with propionic acidemia undergoing periodic hemodialysis. The patient had a central venous catheter implanted for total parenteral nutrition approximately 6 months prior to the onset of symptoms because of repeated acute pancreatitis...
2017: Case Reports in Infectious Diseases
https://www.readbyqxmd.com/read/28182347/the-diagnostic-value-of-procalcitonin-versus-other-biomarkers-in-prediction-of-bloodstream-infection
#12
Ya-Ping Pan, Ya-Ping Fang, Yuan-Hong Xu, Zhong-Xin Wang, Ji-Lu Shen
BACKGROUND: We compared the diagnostic utility of procalcitonin (PCT), C-reactive protein (CRP), and hematological markers, including white blood cell count (WBC), neutrophils (NEU), percentage of neutrophils (NEU%), lymphocytes (LYM), neutrophil-lymphocyte count ratio (NLCR), and platelet count (PLT) for predicting bloodstream infection (BSI), which was confirmed by blood culture (BC). METHODS: A retrospective analysis was conducted for 1807 inpatients. The level of PCT, CRP, blood cells, and blood culture results were compared between the positive blood culture group and negative blood culture group; each indicator was analyzed in the performance of bacterial BSI diagnosis by drawing ROC curves...
February 1, 2017: Clinical Laboratory
https://www.readbyqxmd.com/read/28178107/late-onset-neonatal-sepsis-a-10-year-review-from-north-queensland-australia
#13
Harsha Gowda, Robert Norton, Andrew White, Yogavijayan Kandasamy
OBJECTIVE: Late-onset sepsis (LOS) in neonates contributes significantly to both morbidity and mortality. To determine the incidence of LOS, risk factors for disease, and the impact on subsequent hospital course, we evaluated a cohort of 6340 neonates admitted to the neonatal intensive care unit and of neonates (3-28 days) admitted from the community between January 2005 and January 2016. METHODS: This was a retrospective case review of all neonates admitted with suspected LOS who had positive blood culture and/or cerebrospinal fluid (CSF) cultures, for an organism determined to be a pathogen...
February 1, 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/28168415/comparison-of-levofloxacin-and-garenoxacin-for-antibacterial-prophylaxis-during-neutropenia
#14
Ryoko Yamasaki, Junya Kanda, Yu Akahoshi, Hirofumi Nakano, Tomotaka Ugai, Hidenori Wada, Koji Kawamura, Yuko Ishihara, Kana Sakamoto, Miki Sato, Masahiro Ashizawa, Tomohito Machishima, Kiriko Terasako-Saito, Shun-Ichi Kimura, Misato Kikuchi, Hideki Nakasone, Rie Yamazaki, Shinichi Kako, Junji Nishida, Yoshinobu Kanda
Levofloxacin (LVFX) is widely used for antibacterial prophylaxis during neutropenia. Garenoxacin (GRNX), which has been investigated in Japan, has stronger antibacterial activity than LVFX against gram-positive bacteria; however, no studies have compared the effectiveness of LVFX and GRNX. We retrospectively analyzed 42 patients with acute leukemia and 32 patients who underwent hematopoietic cell transplantation. Thirty-one patients before September 2009 received GRNX, and subsequent 43 patients received LVFX...
February 6, 2017: International Journal of Hematology
https://www.readbyqxmd.com/read/28161294/pantoea-calida-bacteremia-in-an-adult-with-end-stage-stomach-cancer-under-inpatient-care
#15
Kageto Yamada, Machiko Kashiwa, Katsumi Arai, Kazuya Satoyoshi, Hiroyuki Nishiyama
Pantoea calida is a gram-negative bacillus that was first identified in 2010. Here, we describe the first known case of P. calida bacteremia in a 77-year-old woman with end-stage stomach cancer under inpatient care. The patient was admitted to our hospital for pain after receiving anti-cancer therapy at outpatient facility. Thirteen days after admission, her temperature rose to 39.6 °C. A blood culture was ordered for suspected bacterial infection, and the patient was treated empirically with ampicillin/sulbactam...
February 2, 2017: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
https://www.readbyqxmd.com/read/28144466/sphingobacterium-multivorum-bacteremia-and-acute-meningitis-in-an-immunocompetent-adult-patient-a-case-report
#16
Ali Hassan Abro, Mohammad Reza Rahimi Shahmirzadi, Layal Mohammed Jasim, Samar Badreddine, Zulfa Al Deesi
INTRODUCTION: Sphingobacterium multivorum is a Gram-negative, nonfermentative bacillus that rarely causes disease in humans. In the medical literature, only a few cases of infections caused by this organism have been reported. Almost all the reported cases of this infection were associated with conditions that decrease immunity. CASE PRESENTATION: To the best of our knowledge, we are reporting the first case of bacteremia and acute meningitis caused by S. multivorum in a young immunocompetent adult...
September 2016: Iranian Red Crescent Medical Journal
https://www.readbyqxmd.com/read/28124968/-accurate-diagnosis-of-pseudomonas-luteola-in-routine-microbiology-laboratory-on-the-occasion-of-two-isolates
#17
Muharrem Çiçek, Gülşen Hasçelik, H Kaan Müştak, K Serdar Diker, Burçin Şener
Pseudomonas luteola which was previously known as Chryseomonas luteola; is a gram-negative, non-fermentative, aerobic, motile, non-spore-forming bacillus. It is frequently found as a saprophyte in soil, water and other damp environments and is an opportunistic pathogen in patients with underlying medical disorders or with indwelling catheters. It has been reported as an uncommon cause of bacteremia, sepsis, septic arthritis, meningitis, endocarditis, and peritonitis. Thus, early and accurate identification of this rare species is important for the treatment and also to provide information about the epidemiology of P...
October 2016: Mikrobiyoloji Bülteni
https://www.readbyqxmd.com/read/28122629/bacteremia-caused-by-multidrug-resistant-bacteria-among-hospitalized-malnourished-children-in-mwanza-tanzania-a-cross-sectional-study
#18
Maimuna Ahmed, Mariam M Mirambo, Martha F Mushi, Adolfine Hokororo, Stephen E Mshana
BACKGROUND: Severe malnutrition has been known to increase susceptibility and severity of infections. Bacteremia in malnourished children has been found to increase morbidity and mortality especially if is due to multidrug resistant bacteria. Here, we report the prevalence of bacteremia among children under 5 years of age and the antibiotic susceptibility pattern of the isolates; the information that can be used by clinicians to guide on the empirical antibiotic treatment. FINDINGS: A total of 402 malnourished children were investigated for bacteremia...
January 25, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28101334/implementation-of-short-incubation-maldi-tof-ms-identification-from-positive-blood-cultures-in-routine-diagnostics-and-effects-on-empiric-antimicrobial-therapy
#19
Robin Köck, Jörg Wüllenweber, Dagmar Horn, Christian Lanckohr, Karsten Becker, Evgeny A Idelevich
BACKGROUND: Results of blood culture (BC) diagnostics should be swiftly available to guide treatment of critically ill patients. Conventional BC diagnostics usually performs species identification of microorganisms from mature solid medium colonies. Species identification might be speed up by using matrix-assisted laser desorption ionization time-of-flight (MALDI-TOF) mass spectrometry (MS) of biomass from shortly incubated solid media. METHODS: This single-center analysis compared the applicability of MALDI-TOF-based species identification from shortly incubated cultures in laboratory routine vs...
2017: Antimicrobial Resistance and Infection Control
https://www.readbyqxmd.com/read/28090057/the-first-case-report-of-acute-cholangitis-and-bacteremia-due-to-neisseria-subflava
#20
Yoshifumi Uwamino, Kayoko Sugita, Eisuke Iwasaki, Hiroshi Fujiwara, Tomoyasu Nishimura, Naoki Hasegawa, Satoshi Iwata
We herein report a case of acute cholangitis and bacteremia caused by a commensal Neisseria species, Neisseria subflava, in an 82-year-old man with cholangiocarcinoma. Emergency endoscopic nasobiliary drainage and cefoperazone/sulbactam therapy were effective. Gram negative coccobacilli were isolated from both blood and bile cultures on 5% sheep blood agar. The isolate was identified as N.subflava biovar perflava by mass spectrometry, a sequence analysis of the 16S rRNA, and biochemical testing. Although biliary infections due to commensal Neisseria are extremely rare, this case demonstrates the possibility of its occurrence in patients undergoing bile duct treatment...
2017: Internal Medicine
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