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https://www.readbyqxmd.com/read/28634536/telavancin-a-novel-semisynthetic-lipoglycopeptide-agent-to-counter-the-challenge-of-resistant-gram-positive-pathogens
#1
REVIEW
Biswadeep Das, Chayna Sarkar, Debasmita Das, Amit Gupta, Arnav Kalra, Shubham Sahni
Telavancin (TD-6424), a semisynthetic lipoglycopeptide vancomycin-derivative, is a novel antimicrobial agent developed by Theravance for overcoming resistant Gram-positive bacterial infections, specifically methicillin-resistant Staphylococcus aureus (MRSA). The US Food and Drug Administration (USFDA) had approved telavancin in 2009 for the treatment of complicated skin and skin structure infections (cSSSIs) caused by Gram-positive bacteria, including MRSA (S. aureus, Streptococcus agalactiae, Streptococcus pyogenes, Streptococcus anginosus group, or Enterococcus faecalis)...
March 2017: Therapeutic Advances in Infectious Disease
https://www.readbyqxmd.com/read/28633864/perinatal-group-b-streptococcal-infections-virulence-factors-immunity-and-prevention-strategies
#2
REVIEW
Jay Vornhagen, Kristina M Adams Waldorf, Lakshmi Rajagopal
Group B streptococcus (GBS) or Streptococcus agalactiae is a β-hemolytic, Gram-positive bacterium that is a leading cause of neonatal infections. GBS commonly colonizes the lower gastrointestinal and genital tracts and, during pregnancy, neonates are at risk of infection. Although intrapartum antibiotic prophylaxis during labor and delivery has decreased the incidence of early-onset neonatal infection, these measures do not prevent ascending infection that can occur earlier in pregnancy leading to preterm births, stillbirths, or late-onset neonatal infections...
June 17, 2017: Trends in Microbiology
https://www.readbyqxmd.com/read/28630844/multifocal-septic-arthritis-secondary-to-infective-endocarditis-a-rare-case-report
#3
Pavandeep Soor, Nikhil Sharma, Chandra Rao
INTRODUCTION: Infective endocarditis (IE) is a rare cause of septic arthritis. We report a patient who presented with multifocal septic arthritis as a result of IE, which is an extremely rare condition. CASE REPORT: This 69-year-old gentleman presented to the emergency department (ED) with a 3-day history of acute right knee pain. Initial investigations demonstrated chondrocalcinosis on knee radiographs, acute renal failure with rhabdomyolysis and a CRP of 520. After treatment with intravenous fluid rehydration and analgesia, the knee aspiration grew a Group B Streptococcus, and the patient underwent arthroscopic washout...
January 2017: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/28628457/clonal-clusters-and-virulence-factors-of-group-c-and-g-streptococcus-causing-severe-infections-manitoba-canada-2012-2014
#4
Sylvain A Lother, Walter Demczuk, Irene Martin, Michael Mulvey, Brenden Dufault, Philippe Lagacé-Wiens, Yoav Keynan
The incidence of group C and G Streptococcus (GCGS) bacteremia, which is associated with severe disease and death, is increasing. We characterized clinical features, outcomes, and genetic determinants of GCGS bacteremia for 89 patients in Winnipeg, Manitoba, Canada, who had GCGS bacteremia during 2012-2014. Of the 89 patients, 51% had bacteremia from skin and soft tissue, 70% had severe disease features, and 20% died. Whole-genome sequencing analysis was performed on isolates derived from 89 blood samples and 33 respiratory sample controls: 5 closely related genetic lineages were identified as being more likely to cause invasive disease than non-clade isolates (83% vs...
July 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/28622535/vitamin-d-mediates-the-relationship-between-placental-cathelicidin-and-group-b-streptococcus-colonization-during-pregnancy
#5
Christine C Akoh, Eva K Pressman, Corrie M Whisner, Carrie Thomas, Chang Cao, Tera Kent, Elizabeth Cooper, Kimberly O O'Brien
Vitamin D is thought to modulate innate immune responses, and recent studies have highlighted the autocrine and paracrine functions of vitamin D in the placenta. Our objective was to determine the relationship between maternal vitamin D status and placental antimicrobial peptide (AMP) expression in a group of racially and ethnically diverse pregnant adolescents. In this study, 158 pregnant adolescents were recruited from the Rochester Adolescent Maternity Program (RAMP) in Rochester, NY. Maternal serum concentrations of the vitamin D biomarkers, 25-hydroxyvitamin D (25(OH)D) and 1,25-dihydroxyvitamin D (1,25(OH)2D), were measured at mid-gestation (∼26 weeks) and at delivery...
June 6, 2017: Journal of Reproductive Immunology
https://www.readbyqxmd.com/read/28621324/marginal-bone-loss-around-non-submerged-implants-is-associated-with-salivary-microbiome-during-bone-healing
#6
Xiao-Bo Duan, Ting-Xi Wu, Yu-Chen Guo, Xue-Dong Zhou, Yi-Ling Lei, Xin Xu, An-Chun Mo, Yong-Yue Wang, Quan Yuan
Marginal bone loss during bone healing exists around non-submerged dental implants. The aim of this study was to identify the relationship between different degrees of marginal bone loss during bone healing and the salivary microbiome. One hundred patients were recruited, and marginal bone loss around their implants was measured using cone beam computed tomography during a 3-month healing period. The patients were divided into three groups according to the severity of marginal bone loss. Saliva samples were collected from all subjected and were analysed using 16S MiSeq sequencing...
June 16, 2017: International Journal of Oral Science
https://www.readbyqxmd.com/read/28621047/clinical-value-of-polymerase-chain-reaction-in-detecting-group-b-streptococcus-during-labor
#7
Dorothea Maria Koppes, Antonius Arnoldus Cornelis Maria Vriends, Michiel van Rijn, Antonine Dimphne van Heesewijk
AIM: To reduce the intrapartum use of antibiotics in women with prolonged rupture of the membranes (PROM) by restriction of antibiotics to women who are colonized with group B streptococci (GBS), as identified with the Cepheid Gene Xpert polymerase chain reaction (PCR) for detecting GBS. METHODS: We conducted a randomized controlled trial among full-term delivering women with PROM. Fifty-four women were enrolled, based on a power calculation with a significance level of 5% and a power of 95%...
June 2017: Journal of Obstetrics and Gynaecology Research
https://www.readbyqxmd.com/read/28620316/incidence-and-antimicrobial-sensitivity-profiles-of-normal-conjunctiva-bacterial-flora-in-the-central-area-of-china-a-hospital-based-study
#8
Hua Tao, Juan Wang, Lei Li, Hui-Zhi Zhang, Meng-Ping Chen, Le Li
Objective: To study the distribution and patterns of resistance to antimicrobial agents of normal conjunctival bacteria. Materials and Methods: Conjunctival specimens were collected from 8,224 patients and then cultured, which underwent antimicrobial susceptibility test following standard methods. Patients with infectious symptoms such as erythema or oedema and those using systemic or topical antibiotics within 1 month were excluded. Results: In this study, the incidence of isolated bacteria was 24.2%. The middle aged group of 41-65 years presented the lowest rate of bacterial isolation which was 19...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28620262/prevalence-of-multiple-drug-resistant-streptococcus-suis-in-and-around-guwahati-india
#9
Mrinalee Devi, Jyoti B Dutta, Swaraj Rajkhowa, Dhireswar Kalita, Girindra Kumar Saikia, Bipin Chandra Das, Razibuddin Ahmed Hazarika, Gauranga Mahato
AIM: This study was conducted to determine the prevalence and antimicrobial susceptibility of Streptococcus suis and their resistance patterns isolated from both clinically healthy carriers and diseased pigs in and around Guwahati, Assam, India. MATERIALS AND METHODS: A total of 497 samples were collected during October, 2012, to April, 2014, from clinically healthy (n=67) and diseased (n=230) pigs of varying age and either sex maintained under organized and unorganized farming systems...
May 2017: Veterinary World
https://www.readbyqxmd.com/read/28618168/streptococcus-pyogenes-quinolinate-salvage-pathway-structural-and-functional-studies-of-quinolinate-phosphoribosyl-transferase-and-nh3-dependent-nad-synthetase
#10
William T Booth, Trevor L Morris, David P Mysona, Milan J Shah, Linda K Taylor, Taylor W Karlin, Kathryn Clary, Karolina A Majorek, Lesa R Offermann, Maksymilian Chruszcz
Streptococcus pyogenes, also known as Group A Strep (GAS), is an obligate human pathogen that is responsible for millions of infections and numerous deaths per year. Infection manifestations can range from simple, acute pharyngitis to more complex, necrotizing fasciitis. To date, most treatments for GAS infections involve the use of common antibiotics including tetracycline and clindamycin. Unfortunately, new strains have been identified that are resistant to these drugs therefore, new targets must be identified to treat drug resistant strains...
June 15, 2017: FEBS Journal
https://www.readbyqxmd.com/read/28617790/clinical-management-and-patient-persistence-with-antibiotic-course-in-suspected-group-a-streptococcal-pharyngitis-for-primary-prevention-of-rheumatic-fever-the-perspective-from-a-new-zealand-emergency-department
#11
Jeremy J Mathan, Jozsef Ekart, Anthony Houlding, Gary Payinda, Clair Mills
AIM: Rates of acute rheumatic fever in the Northland region are historically among the highest in New Zealand, impacting disproportionately on Māori children and youth. The primary aim of this study was to determine patient persistence to antibiotic treatment for group A streptococcus (GAS) pharyngitis in patients presenting with sore throat to the Whangarei Hospital Emergency Department. Secondarily, this study sought to determine prescriber adherence to the national antibiotic guideline for sore throat management...
June 16, 2017: New Zealand Medical Journal
https://www.readbyqxmd.com/read/28617561/cervicovaginal-bacteria-and-fungi-in-pregnant-diabetic-and-non-diabetic-women-a-multicenter-observational-cohort-study
#12
A Lukic, A Napoli, I Santino, P Bianchi, F Nobili, G Ciampittiello, M R Nardone, M Santomauro, M Di Properzio, D Caserta
OBJECTIVE: We evaluated the prevalence of cervicovaginal Bacteria, group B Streptococcus (GBS), Gardnerella vaginalis (GV), Candida spp., Chlamydia trachomatis (CT), Mycoplasma hominis (MH) and Ureaplasma urealyticum (UU) in pregnant women with and without diabetes mellitus (DM). PATIENTS AND METHODS: Cervicovaginal swabs were gathered from 473 pregnant patients divided into 127 diabetic and 346 non-diabetic. The results were correlated to gestational age, parity and glycemic control...
May 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28616544/dental-care-before-cardiac-valve-surgery-is-it-important-to-prevent-infective-endocarditis
#13
Alessandra Figueiredo de Souza, Amanda Leal Rocha, Wagner Henriques Castro, Fernanda Morais Ferreira, Claudio Léo Gelape, Denise Vieira Travassos, Tarcília Aparecida da Silva
BACKGROUND: Infective endocarditis (IE) is a serious disease that affects the surface of the endocardium. The spread of microorganisms from the oral cavity has been associated with the occurrence of IE. OBJECTIVE: To analyze whether dental treatment before cardiac valve surgery (CVS) influenced the occurrence of IE. METHODS: We performed a retrospective analysis of the medical and dental histories of patients undergoing CVS from 2004 to 2014...
September 2016: IJC Heart & Vasculature
https://www.readbyqxmd.com/read/28616060/early-recognition-of-methicillin-resistant-staphylococcus-aureus-surgical-site-infections-using-risk-and-protective-factors-identified-by-a-group-of-italian-surgeons-through-delphi-method
#14
G Sganga, C Tascini, E Sozio, S Colizza
BACKGROUND: Surgical site infections (SSIs) constitute a major clinical problem in terms of morbidity, mortality, duration of hospital stay, and overall costs. The bacterial pathogens implicated most frequently are Streptococcus pyogenes (S. pyogenes) and Staphylococcus aureus (S. aureus). The incidence of methicillin-resistant S. aureus (MRSA) SSIs is increasing significantly. Since these infections have a significant impact on hospital budgets and patients' health, their diagnosis must be anticipated and therapy improved...
2017: World Journal of Emergency Surgery: WJES
https://www.readbyqxmd.com/read/28615930/prevention-of-influenza-a-h7n9-and-bacterial-infections-in-mice-using-intranasal-immunization-with-live-influenza-vaccine-and-the-group-b-streptococcus-recombinant-polypeptides
#15
Yulia A Desheva, Galina F Leontieva, Tatiana A Kramskaya, Tatiana A Smolonogina, Kornelia B Grabovskaya, Galina O Landgraf, Vadim E Karev, Alexander N Suvorov, Larisa G Rudenko
We investigate the protective effect of combined vaccination based on live attenuated influenza vaccine (LAIV) and group B streptococcus (GBS) recombinant polypeptides against potential pandemic H7N9 influenza infection followed by GBS burden. Mice were intranasally immunized using 107 50% egg infectious dose (EID50) of H7N3 LAIV, the mix of the 4 GBS peptides (group B streptococcus vaccine [GBSV]), or combined LAIV + GBSV vaccine. The LAIV raised serum hemagglutination-inhibition antibodies against H7N9 in higher titers than against H7N3...
2017: Virology: Research and Treatment
https://www.readbyqxmd.com/read/28615470/identification-of-the-group-b-streptococcus-capsule-type-using-a-dual-phenotypic-genotypic-assay
#16
Areej Alhhazmi, Armaan Pandey, Gregory J Tyrrell
The Group B streptococcus (GBS) capsular polysaccharide (CPS) is an important virulence factor which is also used for GBS typing. There are 10 CPS types (Ia, Ib and II-IX). GBS that do not phenotypically type are considered non-typable. All genes required for CPS synthesis are found on the GBS cps operon, which contains a highly variable CPS-determining region (cpsG-cpsK).The objective of this study was development of an assay to detect sialic acid on the GBS cell surface followed by a genotypic PCR CPS typing assay...
June 14, 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28612153/streptococcus-pneumoniae-antimicrobial-resistance-decreased-in-the-helsinki-metropolitan-area-after-routine-10-valent-pneumococcal-conjugate-vaccination-of-infants-in-finland
#17
R Sihvonen, L Siira, M Toropainen, P Kuusela, A Pätäri-Sampo
Since the introduction of 10-valent pneumococcal conjugate vaccine (PCV10) into the Finnish national vaccination program in September 2010, the incidence of invasive pneumococcal disease in children has decreased steeply in Finland. We studied the antimicrobial susceptibility of invasive and non-invasive Streptococcus pneumoniae (pneumococcus) isolated in the Helsinki Metropolitan Area during 2009-2014. We divided the data into two age groups: isolates from patients <5 years old and ≥5 years old. We also studied the serotype distribution of invasive isolates and of a subset of non-invasive multidrug-resistant isolates...
June 13, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28611760/bacterial-composition-and-diversity-in-breast-milk-samples-from-mothers-living-in-taiwan-and-mainland-china
#18
Shiao-Wen Li, Koichi Watanabe, Chih-Chieh Hsu, Shiou-Huei Chao, Zheng-Hua Yang, Yan-Jun Lin, Chun-Chiang Chen, Yong-Mei Cao, Hsuan-Cheng Huang, Chuan-Hsiung Chang, Ying-Chieh Tsai
Human breast milk is widely recognized as the best source of nutrients for healthy growth and development of infants; it contains a diverse microbiota. Here, we characterized the diversity of the microbiota in the breast milk of East Asian women and assessed whether delivery mode influenced the microbiota in the milk of healthy breast-feeding mothers. We profiled the microbiota in breast milk samples collected from 133 healthy mothers in Taiwan and in six regions of mainland China (Central, East, North, Northeast, South, and Southwest China) by using 16S rRNA pyrosequencing...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28611324/comparative-evaluation-of-mangifera-indica-leaf-mouthwash-with-chlorhexidine-on-plaque-accumulation-gingival-inflammation-and-salivary-streptococcal-growth
#19
Sham S Bhat, K Sundeep Hegde, Chinchu Mathew, S Vidya Bhat, M Shyamjith
AIMS: This study aims to compare the efficacy of a mango (Mangifera indica) leaf mouthwash with chlorhexidine on plaque status, gingival status, and salivary Streptococcus mutans count. MATERIALS AND METHODS: A sample of twenty children, aged 8-14 years, Mangalore Residential School, Karnataka, India, was allocated into two groups. Group A (10) and Group B (10) were given test mouthwash "mango leaf mouthwash" and chlorhexidine, respectively. The clinical trial was carried out for ½ h after rinsing and after 5 days, during which children were asked to rinse once daily, with 10 ml of the given mouthwash ½ h after tooth brushing...
March 2017: Indian Journal of Dental Research: Official Publication of Indian Society for Dental Research
https://www.readbyqxmd.com/read/28605130/effect-of-cocoa-s-theobromine-on-intestinal-microbiota-of-rats
#20
Sandra Martín-Peláez, Mariona Camps-Bossacoma, Malen Massot-Cladera, Mar Rigo-Adrover, Àngels Franch, Francisco J Pérez-Cano, Margarida Castell
SCOPE: To establish the role of cocoa theobromine on gut microbiota composition and fermentation products after cocoa consumption in rats. METHODS AND RESULTS: Lewis rats were fed either a standard diet (RF diet), a diet containing 10% cocoa (CC diet) or a diet including 0.25% theobromine (TB diet) for 15 days. Gut microbiota (fluorescence in situ hybridization coupled to flow cytometry and metagenomics analysis), SCFA and IgA-coated bacteria were analyzed in fecal samples...
June 12, 2017: Molecular Nutrition & Food Research
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