37 research outputs found

    Stenotrophomonas maltophilia prosthetic valve endocarditis: a case report

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    <p>Abstract</p> <p>Introduction</p> <p><it>Stenotrophomonas maltophilia </it>is an environmental bacterium increasingly involved in nosocomial infections and resistant to most antibiotics. It is important to recognize and efficiently treat infections with this bacterium as soon as possible.</p> <p>Case presentation</p> <p>We present a case of <it>Stenotrophomonas maltophilia </it>prosthetic valve endocarditis secondary to an indwelling catheter infection. The patient was cured without surgery. We review other cases of <it>S. maltophilia </it>endocarditis from the literature and describe the peculiarities of this case.</p> <p>Conclusion</p> <p><it>S. maltophilia </it>endocarditis is a rare disease that is often hospital-acquired and related to an indwelling catheter infection. The high lethality is likely related to the intrinsic resistance of nosocomial bloodstream infections to commonly prescribed antibiotics.</p

    Influence of health literacy on maintenance of exclusive breastfeeding at 6 months postpartum: a multicentre study

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    Background: International organizations recommend initiating breastfeeding within the first hour of life and maintaining exclusive breastfeeding for the first 6 months. However, worldwide rates of exclusive breastfeeding for 6-month-old infants is far from meeting the goal proposed by the World Health Organization, which is to reach a minimum of 50% of infants. Education is one of the factors affecting the initiation and continuation of breastfeeding, and incidentally, it is also related to lower health literacy. This study explored the influence of health literacy on maintenance of exclusive breastfeeding at 6 months postpartum. Methods: A longitudinal multicenter study with 343 women were recruited between January 2019 and January 2020. The first questionnaire was held during the puerperium (24–48 h) with mothers practicing exclusive breastfeeding, with whom 6-month postpartum breastfeeding follow-up was performed. Socio-demographic, clinical and obstetric variables were collected. Breastfeeding efficiency was assessed using the LATCH breastfeeding assessment tool. The health literacy level was evaluated by the Newest Vital Sign screening tool. A multivariate logistic regression model was used to detect protective factors for early exclusive breastfeeding cessation. Results: One third of the women continued exclusive breastfeeding at 6 months postpartum. Approximately half the participants had a low or inadequate health literacy level. An adequate health literacy level, a high LATCH breastfeeding assessment tool score (>9 points) and being married were the protective factors against exclusive breastfeeding cessation at 6 months postpartum. Conclusion: Health literacy levels are closely related to maintaining exclusive breastfeeding and act as a protective factor against early cessation. A specific instrument is needed to measure the lack of “literacy in breastfeeding”, in order to verify the relationship between health literacy and maintenance of exclusive breastfeedin

    Delafloxacin: design, development and potential place in therapy

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    Francisco Javier Candel, Marina Pe&ntilde;uelas Department of Clinical Microbiology and Infectious Diseases, Hospital Cl&iacute;nico San Carlos, Instituto de Investigaci&oacute;n Sanitaria San Carlos (IdISSC), Universidad Complutense, Madrid, Spain Abstract: Delafloxacin (DLX) is a new fluoroquinolone pending approval, which has shown a good in vitro and in vivo activity against major pathogens associated with skin and soft tissue infections and community-acquired respiratory tract infections. DLX also shows good activity against a broad spectrum of microorganisms, including those resistant to other fluoroquinolones, as methicillin-resistant Staphylococcus aureus. Its pharmacokinetic properties and excellent activity in acidic environments make DLX an alternative in the treatment of these and other infections. In this manuscript, a detailed analysis of this new fluoroquinolone is performed, from its chemical structure to its in vivo activity in recently published clinical trials. Its possible place in the current antimicrobial outlook and in other infectious models is also discussed. Keywords: Delafloxacin, fluoroquinolones, methicillin-resistant Staphylococcus aureus, therap

    Correlation between resistance mechanisms in Staphylococcus aureus and cell wall and septum thickening

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    Ana Bel&eacute;n Garc&iacute;a,1 Jos&eacute; Manuel Vi&ntilde;uela-Prieto,1 Laura L&oacute;pez-Gonz&aacute;lez,1 Francisco Javier Candel1,2 1Department of Clinical Microbiology, Hospital Cl&iacute;nico San Carlos, Complutense University, Madrid, Spain; 2Health Research Institute, Hospital Universitario San Carlos, Madrid, Spain Purpose: The aim of the present study is to examine cell wall and septum thickening of methicillin-sensitive Staphylococcus aureus (MSSA), methicillin-resistant S. aureus (MRSA), and methicillin- and linezolid-resistant S. aureus (MLRSA) isolates by transmission electron microscopy to correlate the association of resistance mechanisms with major changes in the morphology of membrane or septum.Materials and methods: MSSA, MRSA, and MLRSA strains obtained from clinical samples of an outbreak that occurred in 2010 at the Intensive Care Unit of our Hospital were thawed and sown at 37&deg;C in blood agar overnight. After that, they were washed, pelleted, and treated with a fixer solution. Pellets were dehydrated and finally embedded in resin. Transmission electron microscopy was used to characterize cell wall and septum thickening in all isolates. The comparison between the measurements obtained for each group was performed by a Kruskal&ndash;Wallis test and a post hoc Dunn&ndash;Bonferroni&rsquo;s pairwise comparison method.Results: Differences in cell wall and septum thickness were statistically significant (P&lt;0.001 and P&lt;0.001, respectively) between the three groups. Moreover, significant differences were detected in wall and septum thickness between the MSSA and MRSA strains (P&lt;0.001 and P&lt;0.001, respectively) and between the MSSA and MLRSA strains (P&lt;0.001 and P&lt;0.001, respectively) but not between the MRSA and MLRSA strains (P=0.386 and P=0.117).Conclusion: In this analysis, we correlate the resistance mediated by alterations in the cell membrane of S. aureus (methicillin-resistant, for example) with a greater thickness of the wall or septum. The resistance added to linezolid did not determine significant changes in the characteristics of the wall or septum with respect to those strains resistant only to methicillin. Keywords: linezolid-resistant S. aureus, vancomycin intermediate S. aureus, VISA, protein synthesis inhibitor antibiotics, TE
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