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https://www.readbyqxmd.com/read/29761039/fine-grained-compositional-analysis-of-port-everglades-inlet-microbiome-using-high-throughput-dna-sequencing
#1
Lauren O'Connell, Song Gao, Donald McCorquodale, Jay Fleisher, Jose V Lopez
Background: Similar to natural rivers, manmade inlets connect inland runoff to the ocean. Port Everglades Inlet (PEI) is a busy cargo and cruise ship port in South Florida, which can act as a source of pollution to surrounding beaches and offshore coral reefs. Understanding the composition and fluctuations of bacterioplankton communities ("microbiomes") in major port inlets is important due to potential impacts on surrounding environments. We hypothesize seasonal microbial fluctuations, which were profiled by high throughput 16S rRNA amplicon sequencing and analysis...
2018: PeerJ
https://www.readbyqxmd.com/read/29689653/streptococcus-pneumoniae-distribution-of-serotypes-and-antimicrobial-susceptibility-in-patients-with-cancer
#2
Araceli Soto-Noguerón, María Noemí Carnalla-Barajas, Patricia Cornejo-Juárez, Patricia Volkow-Fernández, María Elena Velázquez-Meza, Gabriela Echániz-Aviles
OBJECTIVE: To describe the distribution of pneumococcal serotypes causing infectious diseases in patients with hematological malignancies and solid tumors and their antimicrobial susceptibility before and after introduction of pneumococcal conjugate vaccine (PCV7) in Mexico. MATERIALS AND METHODS: Consecutive pneumococcal isolates from hospitalized patients from the SIREVA-network were serotyped using the Quellung reaction and antimicrobial susceptibility was performed using the broth microdilution method...
January 2018: Salud Pública de México
https://www.readbyqxmd.com/read/29686793/invasive-group-b-streptococcus-multiloculated-perinephric-abscesses-treated-with-percutaneous-drainage
#3
J Isaac Peña-Garcia, Sana Shaikh, Alexandre Lacasse
Group B streptococcus infections (GBSI) are commonly associated with neonates and pregnant women, but may also affect nonpregnant adults. Among its spectrum of manifestations, perinephric abscess (PA) is exceedingly rare. Comorbid conditions such as diabetes mellitus (DM) and immunosuppression increase the risk of GBSI. We describe a 61-year-old Vietnamese man with compensated alcoholic cirrhosis, who presented with acute encephalopathy following subacute, progressive abdominal pain. He was afebrile and hemodynamically stable...
2018: Journal of Community Hospital Internal Medicine Perspectives
https://www.readbyqxmd.com/read/29685049/influence-of-subinhibitory-antibiotic-concentration-on-streptococcus-pyogenes-adherence-and-biofilm-production
#4
Aleksandra Šmitran, Dragana Vuković, Nataša Opavski, Ina Gajić, Jelena Marinković, Ljiljana Božić, Irena Živanović, Dušan Kekić, Sunčica Popović, Lazar Ranin
In this study, the focus was on the effects of sub-MICs of the antibiotics on adherence, hydrophobicity, and biofilm formation by two groups of Streptococcus pyogenes strains, which were responsible for different clinical cases. The aim of this study was to explore the effects of sub-MICs of penicillin, ceftriaxone, erythromycin, and clindamycin on adherence, surface hydrophobicity, and biofilm biomass in two selected collections of group A streptococcus (GAS): strains isolated from carriers (CA) and strains isolated from patients with tonsillopharyngitis (TPh)...
April 24, 2018: Acta Microbiologica et Immunologica Hungarica
https://www.readbyqxmd.com/read/29684541/antimicrobial-activity-of-nanoemulsion-on-drug-resistant-bacterial-pathogens
#5
Rajapandiyan Krishnamoorthy, Jegan Athinarayanan, Vaiyapuri Subbarayan Periyasamy, Abdulraheem R Adisa, Mohammed A Al-Shuniaber, Mustafa A Gassem, Ali A Alshatwi
The appearance of drug-resistant (DR) bacteria in the community is a crucial development, and is associated with increased morbidity, mortality, healthcare costs, and antibiotic use. Natural oil nanoemulsions (NEs) have potential for antimicrobial applications. In the present study, we determined the antimicrobial activity of an NE against DR bacterial pathogens in vitro. The NE comprised Cleome viscosa essential oil, Tween 80 nonionic surfactant, and water. We found that an NE with a droplet size of 7 nm and an oil:surfactant (v/v) ratio of 1:3 was effective against methicillin-resistant Staphylococcus aureus (MRSA), DR Streptococcus pyogenes, and DR extended-spectrum beta-lactamase (ESBL)-producing Escherichia coli, Klebsiella pneumoniae, and Pseudomonas aeruginosa...
April 20, 2018: Microbial Pathogenesis
https://www.readbyqxmd.com/read/29675045/paediatric-autoimmune-neuropsychiatric-disorder-associated-with-group-a-beta-haemolytic-streptococcal-infection-an-indication-for-tonsillectomy-a-review-of-the-literature
#6
REVIEW
Amarkumar Dhirajlal Rajgor, Navid Akhtar Hakim, Sanah Ali, Adnan Darr
Background. Paediatric Autoimmune Neuropsychiatric Disorder Associated with Streptococcal Infection (PANDAS) is the acute onset of neuropsychiatric symptoms following group A beta-haemolytic streptococcal infection. The aetiology remains elusive. However, with group A streptococcus being the most common bacterial cause of tonsillitis, surgical intervention in the form of tonsillectomy has often been considered as a potential therapy. Methods. A MEDLINE® search was undertaken using keywords "PANDAS" or "paediatric autoimmune neuropsychiatric disorders associated with streptococcus" combined with "tonsillectomy"...
2018: International Journal of Otolaryngology
https://www.readbyqxmd.com/read/29671499/poststreptococcal-illness-recognition-and-management
#7
David L Maness, Michael Martin, Gregg Mitchell
Group A beta-hemolytic streptococcus can cause several postinfectious, nonsuppurative immune- mediated diseases including acute rheumatic fever, poststreptococcal reactive arthritis, pediatric autoimmune neuropsychiatric disorders, and poststreptococcal glomerulonephritis. Except for sporadic outbreaks, poststreptococcal autoimmune syndromes occur most commonly in sub-Saharan Africa, India, Australia, and New Zealand. Children younger than three years are rarely affected by group A streptococcus pharyngitis or rheumatic fever, and usually do not require testing...
April 15, 2018: American Family Physician
https://www.readbyqxmd.com/read/29534714/lumbar-spine-epidural-abscess-and-facet-joint-septic-arthritis-due-to-streptococcus-agalactiae-a-case-report
#8
Costansia Bureta, Hiroyuki Tominaga, Takuya Yamamoto, Takao Setoguchi, Hideki Kawamura, Satoshi Nagano, Ichiro Kawamura, Masahiko Abematsu, Hironori Kakoi, Yasuhiro Ishidou, Setsuro Komiya
BACKGROUND: Here we report a rare case of lumbar spine epidural abscess and facet joint septic arthritis caused by Streptococcus agalactiae, which had spread to the iliopsoas muscles, leading to urine retention. CASE PRESENTATION: A 68-year-old woman with low back pain experienced a sudden onset of bilateral lower limb weakness, it was followed 14 days later by urine retention. At consultation, magnetic resonance imaging and identification of serum β-hemolytic streptococci provided a diagnosis of Streptococcus agalactiae infection...
March 13, 2018: BMC Surgery
https://www.readbyqxmd.com/read/29513814/transforming-growth-factor-beta1-tgf-%C3%A3-1-levels-in-a-rat-model-of-induced-pleural-empyema
#9
Samanta Sarmento da Silva, Guilherme Eckert Peterson, Sérgio Luis Amantéa, Patrícia Miorelli, Jane Maria Ulbrich, Eliane Roesch, Paulo Roberto Sanches, Jose Carlos Fraga
PURPOSE: To evaluate the concentration of transforming growth factor beta 1 (TGFB1) levels in a rat pleural effusion obtained by inoculation of intrapleural bacteria or turpentine through thoracentesis. METHODS: Thirty-Nine Wistar rats were divided into three groups: Staphylococcus aureus (SA, n = 17); Streptococcus pneumoniae (SP, n = 12); and turpentine (control, n = 10). Pleural fluid was collected through ultrasound-guided thoracentesis 12 h, 24 h, and 36 h after instillation of bacteria or turpentine...
February 2018: Acta Cirúrgica Brasileira
https://www.readbyqxmd.com/read/29512485/frequent-community-use-of-antibiotics-among-a-low-economic-status-population-in-manila-the-philippines-a-prospective-assessment-using-a-urine-antibiotic-bioassay
#10
Nobuo Saito, Noriko Takamura, Grace P Retuerma, Carina H Frayco, Paul S Solano, Cherlyn D Ubas, Arianne V Lintag, Maricel R Ribo, Rontgene M Solante, Alexis Q Dimapilis, Elizabeth O Telan, Winston S Go, Motoi Suzuki, Koya Ariyoshi, Christopher M Parry
The widespread unregulated use of antibiotics without medical consultation contributes to the burden of antibiotic resistance in Southeast Asian countries. This study investigated antibiotic use before hospital consultation. In a prospective observational study from February 2, 2015, to July 2, 2015, we enrolled febrile patients attending the emergency room in San Lazaro Hospital, Manila, the Philippines. A urine sample was collected and a bioassay was used to detect antibiotic activity in urine using Bacillus stearothermophilus (ATCC7953), Escherichia coli (ATCC25922), and Streptococcus pyogenes (ATCC19615)...
May 2018: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/29475580/evidence-of-cardiac-involvement-in-the-fetal-inflammatory-response-syndrome-disruption-of-gene-networks-programming-cardiac-development-in-nonhuman-primates
#11
Timothy Mitchell, James W MacDonald, Sengkeo Srinouanpranchanh, Theodor K Bammler, Sean Merillat, Erica Boldenow, Michelle Coleman, Kathy Agnew, Audrey Baldessari, Jennifer E Stencel-Baerenwald, Jennifer Tisoncik-Go, Richard R Green, Michael J Gale, Lakshmi Rajagopal, Kristina M Adams Waldorf
BACKGROUND: Most early preterm births are associated with intraamniotic infection and inflammation, which can lead to systemic inflammation in the fetus. The fetal inflammatory response syndrome describes elevations in the fetal interleukin-6 level, which is a marker for inflammation and fetal organ injury. An understanding of the effects of inflammation on fetal cardiac development may lead to insight into the fetal origins of adult cardiovascular disease. OBJECTIVE: The purpose of this study was to determine whether the fetal inflammatory response syndrome is associated with disruptions in gene networks that program fetal cardiac development...
April 2018: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/29457285/vaginal-isolation-of-beta-haemolytic-streptococcus-from-bitches-with-and-without-neonatal-deaths-in-the-litters
#12
A E Guerrero, M C Stornelli, S B Jurado, G Giacoboni, G H Sguazza, R L de la Sota, M A Stornelli
The aim of the study was to identify beta-haemolytic streptococci in the vagina of bitches who had delivered healthy litters and bitches who had delivered litters in which neonatal deaths occurred. Fifty-one bitches divided into two groups were used. Group 1 (G1) included 28 bitches that had delivered healthy litters and group 2 (G2) included 23 bitches that had delivered puppies who died in the neonatal period. Two vaginal samples were taken, one in proestrus and the other at the end of gestation (EG). Beta-haemolytic Streptococcus (BS) was isolated from 16 bitches (57%) in G1 and from 21 bitches (91%) in G2...
June 2018: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/29415186/microbial-spectrum-of-intra-abdominal-abscesses-in-perforating-crohn-s-disease-results-from-a-prospective-german-registry
#13
P A Reuken, W Kruis, C Maaser, N Teich, J Büning, J C Preiß, R Schmelz, T Bruns, S Fichtner-Feigl, A Stallmach
Background: Intra-abdominal abscesses (IAA) are common life threatening complications in patients with Crohn's disease (CD). In addition to interventional drainage and surgical therapy, empirical antibiotic therapy represents a corner stone of treatment but contemporary data on microbial spectra and antimicrobial resistance are scarce. Methods: We recruited 105 patients with CD and IAA from 9 German centers for a prospective registry in order to characterize the microbiological spectrum, resistance profiles, antibiotic therapy and outcome...
February 5, 2018: Journal of Crohn's & Colitis
https://www.readbyqxmd.com/read/29382496/-orbital-cellulitis-complicated-by-subperiosteal-abscess-due-to-streptococcus-pyogenes-infection
#14
José Daniel Ruíz Carrillo, Edwin Vázquez Guerrero, Mónica Cecilia Mercado Uribe
BACKGROUND: Orbital cellulitis is an infectious disease that is very common in pediatric patients, in which severe complications may develop. Etiological agents related to this disease are Haemophilus influenzae B, Staphylococcus aureus, Streptococcus pneumoniae and Moraxella catarrhalis, which correspond to 95% of cases. Moreover, Streptococcus beta hemolytic and anaerobic microorganisms may also be present corresponding to < 5% of the cases. We present an uncommon case of cellulitis complicated by sub-periosteal abscess caused by Streptococcus pyogenes (Group A beta hemolytic streptococcus)...
March 2017: Boletín Médico del Hospital Infantil de México
https://www.readbyqxmd.com/read/29349041/unusual-cause-of-severe-diabetic-ketoacidosis-precipitated-by-streptococcus-bovis-equinus-sbsec-bacteremia-case-report-and-review-of-literature
#15
Sana Idrees, Sonali Gupta, Miguel Mantilla, Pradeep Goyal, Ilja Hulinsky
Diabetic ketoacidosis is a feared complication in patients with diabetes mellitus and poses high risk of mortality and morbidity unless treated in timely manner. Infection is one of the most common precipitating factors for the development of diabetic ketoacidosis. Bacteremia with Group A and Group B beta hemolytic streptococcal strains are well known, however nonenterococcal Group D strains such as the Streptococcus bovis / Streptococcus equinus complex (SBSEC) still remains an understudied entity. Here we present a case of a 35-year-old Type I diabetic female presenting with severe diabetic ketoacidosis with overlapping features of hyperosmolar hyperglycemia, precipitated by Streptococcus alactolyticus bacteremia, successfully treated with four-week course of parenteral ceftriaxone...
2018: IDCases
https://www.readbyqxmd.com/read/29233751/differential-binding-of-antibodies-in-pandas-patients-to-cholinergic-interneurons-in-the-striatum
#16
Luciana R Frick, Maximiliano Rapanelli, Kantiya Jindachomthong, Paul Grant, James F Leckman, Susan Swedo, Kyle Williams, Christopher Pittenger
Pediatric Autoimmune Neuropsychiatric Disorder Associated with Streptococcus, or PANDAS, is a syndrome of acute childhood onset of obsessive-compulsive disorder and other neuropsychiatric symptoms in the aftermath of an infection with Group A beta-hemolytic Streptococcus (GABHS). Its pathophysiology remains unclear. PANDAS has been proposed to result from cross-reactivity of antibodies raised against GABHS with brain antigens, but the targets of these antibodies are unclear and may be heterogeneous. We developed an in vivo assay in mice to characterize the cellular targets of antibodies in serum from individuals with PANDAS...
March 2018: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/29107650/molecular-characterization-and-antibiotic-resistance-of-streptococcus-dysgalactiae-subspecies-equisimilis-isolated-from-patients-with-streptococcal-toxic-shock-syndrome
#17
T Ikebe, R Okuno, M Sasaki, Y Kanda, H Otsuka, R Kawahara, H Ohya, M Suzuki, K Uchida, H Nihonmatsu, M Ohnishi
Streptococcal toxic shock syndrome (STSS) is a severe invasive infection characterized by the sudden onset of shock, multiorgan failure, and high mortality. Although STSS is mainly caused by Streptococcus pyogenes, group G streptococcus identified as S. dysgalactiae subsp. equisimilis (SDSE) causing STSS has also been reported; however, no study has analyzed >100 isolates of SDSE causing STSS. Therefore, we characterized the emm genotype of 173 SDSE isolates obtained from STSS patients in Japan during 2014-2016 and performed antimicrobial susceptibility testing using the broth microdilution method and emm gene typing...
February 2018: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
https://www.readbyqxmd.com/read/29072654/-the-specific-features-of-the-past-medical-history-and-etiology-of-pharyngeal-abscess-in-the-children
#18
Yu L Soldatsky, O A Denisova, S A Bulynko
The present study was undertaken for the purpose of elucidating the specific features of the past medical history and the etiological factors responsible for the development of tonsillogenic pharyngeal abscesses in the children. We performed the retrospective analysis of the medical histories of 291 children presenting with this condition who had been admitted for the treatment to the ENT Department of the Morozovskzya City Children's Clinical Hospital during the period from January till December 2015. The study has demonstrated the following most common shortcomings of the outpatient treatment of the patients suffering from chronic tonsillitis at the stage preceding formation of paratonsillar abscess: inadequate antibacterial therapy of acute chronic tonsillitis or its exacerbation and limited indications for tonsillectomy at the level of the outpatient treatment...
2017: Vestnik Otorinolaringologii
https://www.readbyqxmd.com/read/29029143/genome-wide-analysis-of-genetic-risk-factors-for-rheumatic-heart-disease-in-aboriginal-australians-provides-support-for-pathogenic-molecular-mimicry
#19
Lesley-Ann Gray, Heather A D'Antoine, Steven Y C Tong, Melita McKinnon, Dawn Bessarab, Ngiare Brown, Bo Reményi, Andrew Steer, Genevieve Syn, Jenefer M Blackwell, Michael Inouye, Jonathan R Carapetis
Background: Rheumatic heart disease (RHD) after group A streptococcus (GAS) infections is heritable and prevalent in Indigenous populations. Molecular mimicry between human and GAS proteins triggers proinflammatory cardiac valve-reactive T cells. Methods: Genome-wide genetic analysis was undertaken in 1263 Aboriginal Australians (398 RHD cases; 865 controls). Single-nucleotide polymorphisms were genotyped using Illumina HumanCoreExome BeadChips. Direct typing and imputation was used to fine-map the human leukocyte antigen (HLA) region...
December 12, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28991775/evidence-based-practice-in-using-antibiotics-for-acute-tonsillitis-in-primary-care-practice
#20
Valentina Risteska Nejashmikj, Snezana Stojkovska, Irena Kondova Topuzovska, Katarina Stavrikj
The increased use of antibiotics for acute tonsillitis is a public health problem. 80% of the antibiotic prescriptions for acute tonsillitis are done in the Primary Care practice (PCP). The inappropriate use of the antibiotic causes bacterial resistance and treatment failure. Only patients with acute tonsillitis caused by Group A beta-hemolytic streptococcus (GAS) have benefit of the antibiotic treatment, which is a predict cause in 5-20%. In order to assess the antibiotic prescribing for acute tonsillitis by the doctors in the PCP in Macedonia we use the data from the national project about antibiotic prescribing for acute respiratory tract infections which was conducted in November 2014 during a period of 4 weeks as part of the E-quality program sponsored by the IPCRG...
September 1, 2017: Prilozi (Makedonska Akademija Na Naukite i Umetnostite. Oddelenie za Medicinski Nauki)
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