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Streptococcus agalactiae

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https://www.readbyqxmd.com/read/27919757/dietary-administration-of-bacillus-subtilis-hainup40-enhances-growth-digestive-enzyme-activities-innate-immune-responses-and-disease-resistance-of-tilapia-oreochromis-niloticus
#1
Haitian Liu, Shifeng Wang, Yan Cai, Xiaohui Guo, Zhenjie Cao, Yongzheng Zhang, Shubin Liu, Wei Yuan, Weiwei Zhu, Yu Zheng, Zhenyu Xie, Weiliang Guo, Yongcan Zhou
The probiotic properties of Bacillus subtilis HAINUP40 isolated from the aquatic environment, and the effects of dietary administration of B. subtilis HAINUP40 on the growth performance, intestinal probiotic recovery, digestive enzyme activities, innate immunity and disease resistance of tilapia (Oreochromis niloticus) were evaluated. The probiotic properties investigated include tolerance to simulated gastrointestinal stress, auto-aggregation, cell surface hydrophobicity and extracellular enzyme production...
December 2, 2016: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/27917849/presence-and-resistance-of-streptococcus-agalactiae-in-vaginal-specimens-of-pregnant-and-adult-non-pregnant-women-and-association-with-other-aerobic-bacteria
#2
Fatima Numanović, Jasmina Smajlović, Merima Gegić, Zineta Delibegović, Sabaheta Bektaš, Emir Halilović, Jasmina Nurkić
Aim To determine the prevalence rate and resistance profile of Streptococcus agalactiae (S. agalactiae) in vaginal swabs of pregnant and adult non-pregnant women in the Tuzla region, Bosnia and Herzegovina (B&H), as well as its association with other aerobic bacteria. Methods This prospective study included 200 women, 100 pregnant and 100 adult non-pregnant. The research was conducted at the Institute of Microbiology, University Clinical Center Tuzla from October to December 2015. Standard aerobic microbiological techniques were used for isolation and identification of S...
February 1, 2017: Medicinski Glasnik
https://www.readbyqxmd.com/read/27914161/streptococcus-agalactiae-native-valve-endocarditis-uncommon-presentation-of-multiple-myeloma
#3
Ana Pinho Oliveira, Anne Delgado, Cláudia Martins, Pedro Gama
Adults with chronic immunosuppressive conditions are at an increased risk for Streptococcus agalactiae endocarditis, which is typically characterized by acute onset, presence of large vegetations, rapid valvular destruction and frequent complications. We report a rare case of a 74 years old man presenting with fever, renal infarction, ischemic stroke and uveitis. Infective endocarditis was diagnosed and Streptococcus agalactiae was isolated in blood cultures. A multiple myeloma Ig G-K was also diagnosed. The infective endocarditis was successfully treated with a course of benzylpenicillin and gentamicin...
August 2016: Acta Médica Portuguesa
https://www.readbyqxmd.com/read/27911391/a-murine-model-of-group-b-streptococcus-vaginal-colonization
#4
Kathryn A Patras, Kelly S Doran
Streptococcus agalactiae (group B Streptococcus, GBS), is a Gram-positive, asymptomatic colonizer of the human gastrointestinal tract and vaginal tract of 10 - 30% of adults. In immune-compromised individuals, including neonates, pregnant women, and the elderly, GBS may switch to an invasive pathogen causing sepsis, arthritis, pneumonia, and meningitis. Because GBS is a leading bacterial pathogen of neonates, current prophylaxis is comprised of late gestation screening for GBS vaginal colonization and subsequent peripartum antibiotic treatment of GBS-positive mothers...
November 16, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27910939/real-time-pcr-based-serotyping-of-streptococcus-agalactiae
#5
Kathleen M Breeding, Bhavana Ragipani, Kun-Uk David Lee, Martin Malik, Tara M Randis, Adam J Ratner
Group B Streptococcus (GBS) is an encapsulated, gram-positive pathogen that is an important cause of neonatal invasive infections, including sepsis and meningitis. There are ten known GBS serotypes based on distinct capsule compositions (Ia, Ib, II-IX), and current candidate capsular polysaccharide conjugate vaccines target only a subset of these. Serotyping of GBS isolates is important for understanding local epidemiology and for monitoring for serotype replacement or capsular switching. However, serotyping generally requires either latex agglutination, multiplex PCR with analysis of band sizes, or analysis of whole genome sequences-all techniques that are either expensive or not widely available...
December 2, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27890651/biofilm-is-associated-with-chronic-streptococcal-meningoencephalitis-in-fish
#6
A S Isiaku, M Y Sabri, M Y Ina-Salwany, M D Hassan, P N Tanko, M B Bello
Biofilms are aggregates of attached microbial organisms whose existence on tissues is often recognised as a mechanism for the establishment of most chronic diseases. Herein we investigated the ability of piscine Streptococcus agalactiae, an important aquatic pathogen, for adaptation to this sessile lifestyle in vitro and in the brain of a tilapia fish model. Piscine S. agalactiae exhibited a weak attachment to polystyrene plates and expressed a low biofilm phenotype under the study conditions. Furthermore, fluorescent in situ hybridization and confocal laser scanning microscopy revealed discrete aggregates of attached S...
November 24, 2016: Microbial Pathogenesis
https://www.readbyqxmd.com/read/27884809/construction-of-a-streptococcus-agalactiae-phob-mutant-and-evaluation-of-its-potential-as-an-attenuated-modified-live-vaccine-in-golden-pompano-trachinotus-ovatus
#7
Xiaohui Cai, Bei Wang, Yinhui Peng, Yuan Li, Yishan Lu, Yucong Huang, Jichang Jian, Zaohe Wu
Streptococcus agalactiae is a Gram-positive pathogen that can survive inside professional phagocytes and nonphagocytic cells to cause septicemia and meningoencephalitis in freshwater and marine fish. However, vaccines based on extracellular products (ECP) and formalin-killed whole S. agalactiae cells, as well as subunit vaccine are unable to protect fish from infection by variant serotypes S. agalactiae. The search for live attenuated vaccine with highly conserved and virulent-related genes is essential for producing a vaccine to help understand and control streptococcosis In this study, the phoB gene was cloned from pathogenic S...
November 21, 2016: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/27882238/large-uterine-pyomyoma-in-a-perimenopausal-female-a-case-report-and-review-of-50-reported-cases-in-the-literature
#8
Naoyuki Iwahashi, Yasushi Mabuchi, Michihisa Shiro, Shigetaka Yagi, Sawako Minami, Kazuhiko Ino
Pyomyoma is a rare complication, which withoug antibiotics or surgical intervention, may cause sepsis and mortality. The present study reported a case of large uterine pyomyoma in a perimenopausal female. A 53-year-old multigravida woman was referred to the Department of Obstetrics and Gynecology (Wakayama Medical University, Wakayama, Japan) due to progressive abdominal distension. The patient presented with anemia gravis, severe inflammatory reaction and cachexia. Computed tomography revealed a large unilocular mass, 50 cm in size, with an irregular surface and thickened wall, occupying the entire abdomen...
November 2016: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/27870221/inductors-and-regulatory-properties-of-the-genomic-island-associated-fru2-metabolic-operon-of-streptococcus-agalactiae
#9
Kévin Patron, Philippe Gilot, Vanessa Rong, Aurélia Hiron, Laurent Mereghetti, Emilie Camiade
The fru2 metabolic operon of Streptococcus agalactiae encodes the phosphoenolpyruvate:carbohydrate phosphotransferase system (PTS) enzyme II complex Fru2 (EIIB(Fru2) , EIIA(Fru2) , and EIIC(Fru2) ); Fru2 R, a transcriptional activator with PTS regulatory domains (PRDs); a D-allulose-6-phosphate 3-epimerase; a transaldolase; and a transketolase. We showed that the transcription of fru2 is induced during the stationary phase of growth in complex media and during incubation in human cerebrospinal or amniotic fluids...
November 21, 2016: Molecular Microbiology
https://www.readbyqxmd.com/read/27869599/streptococcus-agalactiae-serotype-iv-in-humans-and-cattle-northern-europe-1
#10
Ulrike Lyhs, Laura Kulkas, Jørgen Katholm, Karin Persson Waller, Kerttu Saha, Richard J Tomusk, Ruth N Zadoks
Streptococcus agalactiae is an emerging pathogen of nonpregnant human adults worldwide and a reemerging pathogen of dairy cattle in parts of Europe. To learn more about interspecies transmission of this bacterium, we compared contemporaneously collected isolates from humans and cattle in Finland and Sweden. Multilocus sequence typing identified 5 sequence types (STs) (ST1, 8, 12, 23, and 196) shared across the 2 host species, suggesting possible interspecies transmission. More than 54% of the isolates belonged to those STs...
December 2016: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/27864157/the-effect-of-feed-based-vaccination-on-tilapia-farm-endemic-for-streptococcosis
#11
M S Ismail, M R Syafiq, A Siti-Zahrah, S Fahmi, H Shahidan, Y Hanan, M N A Amal, M Zamri Saad
A tilapia farm experiencing endemic streptococcosis was selected to study the effect of vaccination with a feed-based vaccine on naturally ocurring streptococcosis. A total of 9000 red tilapia, Oreochromis niloticus × Oreochromis mossambicus of 100 ± 20 g were divided into 9 cages. Fish of Group 1 in cages 1, 2 and 3 were not vaccinated. Group 2 in cages 4, 5 and 6 were vaccinated on days 0 and 14 (single booster) while Group 3 in cages 7, 8 and 9 were vaccinated on days 0, 14 and 42 (double booster)...
November 15, 2016: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/27843769/a-case-of-infective-endocarditis-along-with-a-ruptured-valve-caused-by-streptococcus-agalactiae-in-an-immunocompetent-man
#12
Kiyozumi Suzuki, Yuji Hirai, Fujiko Morita, Yuki Uehara, Hiroko Oshima, Kazunori Mitsuhashi, Atsushi Amano, Toshio Naito
Streptococcus agalactiae (S. agalactiae) is a major cause of invasive disease in neonates and pregnant women, but has also recently been observed among non-pregnant adults, especially elderly persons or persons with underlying chronic disease. S. agalactiae is also a rare cause of infective endocarditis, and most cases require early surgery. We report the case of a 43-year-old previously healthy man who experienced rapid progressive culture-negative infective endocarditis with aortic valve vegetation and severe aortic regurgitation, which was complicated by lumbar spondylodiscitis...
2016: IDCases
https://www.readbyqxmd.com/read/27843558/prevalence-of-bovine-milk-pathogens-in-azorean-pastures-mobile-versus-fixed-milking-machines
#13
C Azevedo, D Pacheco, L Soares, M Moitoso, J Maldonado, R Guix, J Simões
The aims of the present study were (1) to evaluate the influence of using mobile (n=47) or fixed (n=45) milking machines in Azorean herds on the apparent prevalence of several milk pathogens in bulk tank milk (BTM) and (2) to determine whether separated subclinical mastitic cows can serve, in real time, as predictors of milk pathogen prevalence for the remaining animals at the herd level. The use of a mobile or fixed milking machine influenced (P≤0.05) the prevalence of Staphylococcus aureus (72.3 per cent; n=34 v 51...
2016: Veterinary Record Open
https://www.readbyqxmd.com/read/27833605/lactobacillus-fermentum-atcc-23271-displays-in-vitro-inhibitory-activities-against-candida-spp
#14
Monique S do Carmo, Francisca M F Noronha, Mariana O Arruda, Ênnio P da Silva Costa, Maria R Q Bomfim, Andrea S Monteiro, Thiago A F Ferro, Elizabeth S Fernandes, Jorge A Girón, Valério Monteiro-Neto
Lactobacilli are involved in the microbial homeostasis in the female genital tract. Due to the high prevalence of many bacterial diseases of the female genital tract and the resistance of microorganisms to various antimicrobial agents, alternative means to control these infections are necessary. Thus, this study aimed to evaluate the probiotic properties of well-characterized Lactobacillus species, including L. acidophilus (ATCC 4356), L. brevis (ATCC 367), L. delbrueckii ssp. delbrueckii (ATCC 9645), L. fermentum (ATCC 23271), L...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27828624/antimicrobial-susceptibility-of-streptococcus-agalactiae-isolated-from-pregnant-women
#15
Simone Cristina Castanho Sabaini de Melo, Nathally Claudiane de Souza Santos, Marcia de Oliveira, Regiane Bertin de Lima Scodro, Rosilene Fressatti Cardoso, Rúbia Andreia Falleiros Pádua, Flavia Teixeira Ribeiro Silva, Aline Balandis Costa, Maria Dalva de Barros Carvalho, Sandra Marisa Pelloso
Introduction: Group B streptococcus (GBS) or Streptococcus agalactiae can colonize the gastrointestinal and genitourinary tracts and has been considered one of the most important risk factors for the development of neonatal disease. The present study evaluated the antimicrobial susceptibility of GBS isolates from pregnant women who were attended at a public health service in Northern Paraná, Brazil. Methods: A descriptive analytical cross-sectional study was performed with 544 pregnant women, at ≥ 35 weeks of gestation...
November 3, 2016: Revista do Instituto de Medicina Tropical de São Paulo
https://www.readbyqxmd.com/read/27817831/laboratory-controlled-challenges-of-nile-tilapia-oreochromis-niloticus-with-streptococcus-agalactiae-comparisons-between-immersion-oral-intracoelomic-and-intramuscular-routes-of-infection
#16
E Soto, M Zayas, J Tobar, O Illanes, S Yount, S Francis, M M Dennis
Streptococcus agalactiae, the aetiological agent of streptococcosis in fish, is an important pathogen of cultured and wild fish worldwide. To gain a better understanding of the pathogenesis of streptococcosis in Nile tilapia (Oreochromis niloticus), and to identify the experimental route of infection that most closely mimics natural disease, fingerlings were challenged with S. agalactiae utilizing different delivery methods. Fingerlings were challenged via intracoelomic injection (ICinj), intramuscular injection (IMinj), orally or by immersion with serial dilutions of S...
November 2016: Journal of Comparative Pathology
https://www.readbyqxmd.com/read/27811088/draft-genome-sequence-of-streptococcus-agalactiae-serotype-ia-strain-m19-a-multidrug-resistant-isolate-from-a-cow-with-bovine-mastitis
#17
Feng Yang, Hongsheng Li, Shidong Zhang, Xurong Wang
Streptococcus agalactiae is a major contagious pathogen causing bovine mastitis worldwide. We report here the draft sequence of S. agalactiae Ia strain M19, a multidrug-resistant isolate from a bovine mastitis case in Ningxia Hui autonomous region, China.
November 3, 2016: Genome Announcements
https://www.readbyqxmd.com/read/27803422/recurrent-streptococcus-agalactiae-toxic-shock-syndrome-triggered-by-a-tumor-necrosis-factor-%C3%AE-inhibitor
#18
Masataka Yoshida, Takahiro Takazono, Masato Tashiro, Tomomi Saijo, Yoshitomo Morinaga, Kazuko Yamamoto, Shigeki Nakamura, Yoshifumi Imamura, Taiga Miyazaki, Toyomitsu Sawai, Tomoya Nishino, Koichi Izumikawa, Katsunori Yanagihara, Hiroshi Mukae, Shigeru Kohno
Streptococcal toxic shock syndrome caused by group B streptococcus (GBS) is a rare, but lethal disease. We experienced a 45-year-old woman with pustular psoriasis who developed toxic shock-like syndrome during infliximab treatment. Surprisingly, similar episodes recurred three times in one year with restarting of infliximab treatments. In the third episode, GBS were detected in blood, urine, and vaginal secretion cultures. These episodes of shock syndrome were possibly due to GBS. To the best of our knowledge, this is the first case report of recurrent streptococcal toxic shock syndrome possibly caused by GBS which was induced by anti-TNF-α inhibitor therapy...
2016: Internal Medicine
https://www.readbyqxmd.com/read/27802063/in-silico-analysis-of-candidate-proteins-sharing-homology-with-streptococcus-agalactiae-proteins-and-their-role-in-male-infertility
#19
Rajeshwari Parida, Luna Samanta
: Leukocytospermia is a physiologic condition defined as human semen with a leukocyte count of >1 x 10(6) cells/ml that is often correlated with male infertility. Moreover, bacteriospermia has been associated with leukocytospermia ultimately leading to male infertility. We have found that semen samples with >1 x 10(6)/ml leukocytes and/or bacteriospermia have oxidative predominance as evidenced by augmented protein carbonyl and lipid peroxidation status of the semen which is implicated in sperm dysfunction...
November 1, 2016: Systems Biology in Reproductive Medicine
https://www.readbyqxmd.com/read/27774436/evolution-and-diversity-of-the-antimicrobial-resistance-associated-mobilome-in-streptococcus-suis-a-probable-mobile-genetic-elements-reservoir-for-other-streptococci
#20
Jinhu Huang, Jiale Ma, Kexin Shang, Xiao Hu, Yuan Liang, Daiwei Li, Zuowei Wu, Lei Dai, Li Chen, Liping Wang
Streptococcus suis is a previously neglected, newly emerging multidrug-resistant zoonotic pathogen. Mobile genetic elements (MGEs) play a key role in intra- and interspecies horizontal transfer of antimicrobial resistance (AMR) determinants. Although, previous studies showed the presence of several MGEs, a comprehensive analysis of AMR-associated mobilome as well as their interaction and evolution has not been performed. In this study, we presented the AMR-associated mobilome and their insertion hotspots in S...
2016: Frontiers in Cellular and Infection Microbiology
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