Molecular characterization and antibiotic susceptibility of Haemophilus influenzae clinical isolates.

Molecular characterization and antibiotic susceptibility of Haemophilus influenzae clinical isolates. Infez Med. 2017 Mar 01;25(1):27-32 Authors: K L Ç H, Akyol S, Parkan ÕM, Dinç G, Sav H, Aydemir G Abstract Haemophilus influenzae can cause invasive and severe infections in both adults and children such as otitis media, sinusitis, pneumonia, meningitis and bacteremia. The emerging antibiotic resistance in recent years against ampicillin and several other antibiotics among strains of H. influenzae gives cause for serious concern. Here, we investigate ß-lactamase (BL) activity in clinical isolates of H. influenzae, profile their resistance to antibiotics, and characterize the clonal relationship of the isolates. Antibiotic susceptibilities of 92 clinical isolates of H. influenzae (March 2011-May 2012) were determined using the disk diffusion method according to the Clinical &Laboratory Standards Institute (CLSI), and BL activity was detected using the nitrocefin disk method. The Rep-PCR method was used to characterize clonality of the isolates. All strains were found to be susceptible to levofloxacin and cefotaxime. Four isolates out of 92 (4.3%) were found resistant to ampicillin, one isolate (1.1%) was resistant to amoxicillin/clavulanic acid, 21 isolates (22.8%) were resistant to trimethoprim-sulfamethoxazole (SXT), and three isolates (3.3%) showed BL activity. One strain was BL-negative but resistant to ampicillin. The th...
Source: Infezioni in Medicina - Category: Infectious Diseases Tags: Infez Med Source Type: research

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Authors: Rombauts A, Abelenda-Alonso G, Cuervo G, Gudiol C, Carratalà J Abstract INTRODUCTION: Despite adequate antibiotic coverage, community-acquired pneumonia (CAP) remains a leading cause of hospitalization and mortality worldwide. It induces both a local pulmonary and a systemic inflammatory response, particularly significant in severe cases. The intensity of the dysregulated host response varies from patient to patient and has a negative impact on survival and other outcomes. AREAS COVERED: This comprehensive review summarizes the pathophysiological aspects of the inflammatory response in CAP, brie...
Source: Expert Review of Anti-Infective Therapy - Category: Infectious Diseases Tags: Expert Rev Anti Infect Ther Source Type: research
Boosting the sensitivity of in vitroβ-lactam allergy diagnostic tests. Chem Commun (Camb). 2020 Oct 14;56(80):11973-11976 Authors: Peña-Mendizabal E, Morais S, Maquieira Á Abstract The synthesis of structurally new haptens and the development of suitable antigens are essential for boosting the sensitivity of drug allergy diagnostic testing. Unprecedented structural antigens for benzylpenicillin and amoxicillin are characterised and evaluated in a cohort of 70 subjects with a turnkey solution based on consumer electronics. PMID: 33033809 [PubMed - in process]
Source: Chemical Communications - Category: Chemistry Authors: Tags: Chem Commun (Camb) Source Type: research
ConclusionThe COMQ-12 could be a useful tool to differentiate chronic otitis media with or without cholesteatoma.
Source: European Archives of Oto-Rhino-Laryngology - Category: ENT & OMF Source Type: research
Authors: Tamai H, Shingaki N, Ida Y, Shimizu R, Maeshima S, Okamura J, Kawashima A, Nakao T, Hara T, Matsutani H, Nishikawa I, Higashi K Abstract BACKGROUND: Although clinical use of sofosbuvir plus ribavirin has been approved for patients infected with genotype 2 hepatitis C virus, patients ≥ 75-years-old have not been included in previous clinical trials. AIM: To evaluate the real-world safety and efficacy of sofosbuvir plus ribavirin for elderly patients (≥ 75-years-old) compared to nonelderly patients, we conducted a post-marketing prospective cohort study. METHODS: We treated 265 patients with ge...
Source: World Journal of Hepatology - Category: Gastroenterology Tags: World J Hepatol Source Type: research
Authors: Arab JP, Dirchwolf M, Álvares-da-Silva MR, Barrera F, Benítez C, Castellanos-Fernandez M, Castro-Narro G, Chavez-Tapia N, Chiodi D, Cotrim H, Cusi K, de Oliveira CPMS, Díaz J, Fassio E, Gerona S, Girala M, Hernandez N, Marciano S, Masson W, Mendez-Sanchez N, Leite N, Lozano A, Padilla M, Panduro A, Paraná R, Parise E, Perez M, Poniachik J, Restrepo JC, Ruf A, Silva M, Tagle M, Tapias M, Torres K, Vilar-Gomez E, Costa Gil JE, Gadano A, Arrese M Abstract Non-alcoholic fatty liver disease (NAFLD) currently represents an epidemic worldwide. NAFLD is the most frequently diagnosed chr...
Source: Annals of Hepatology - Category: Gastroenterology Tags: Ann Hepatol Source Type: research
Authors: Yamaya T, Baba T, Hagiwara E, Ikeda S, Niwa T, Kitayama T, Murohashi K, Higa K, Sato Y, Ogura T Abstract Coronavirus disease 2019 (COVID-19) has been recognized as a worldwide pandemic. However, the clinical course of COVID-19 remains poorly characterized. Although some cases of pneumothorax have been reported, they all had pulmonary complications or were managed with mechanical ventilation. We herein report a case of pneumothorax that developed even though the patient had no pulmonary underlying diseases and had never been managed with mechanical ventilation. In the present case, a lung bulla was found on...
Source: Internal Medicine - Category: Internal Medicine Tags: Intern Med Source Type: research
Authors: Takahashi M, Horio Y, Takihara T, Enokida K, Miyaoka M, Hirabayashi K, Ohshinden K, Hattori S, Takahashi F, Takahashi G, Tanaka J, Takiguchi H, Niimi K, Ito Y, Hayama N, Oguma T, Asano K Abstract A 72-year-old man was treated with prednisolone and cyclosporine A for idiopathic pulmonary fibrosis. A nodule with a diameter of 19 mm was found in the right lung and diagnosed as lung squamous cell carcinoma. Anti-cancer treatments were not performed because of the presence of advanced interstitial pneumonia and chronic respiratory failure. Cyclosporine A was tapered to avoid suppression of anti-tumor immunity, ...
Source: Internal Medicine - Category: Internal Medicine Tags: Intern Med Source Type: research
Publication date: Available online 8 October 2020Source: European Journal of RadiologyAuthor(s): Davide Colombi, Marcello Petrini, Gabriele Maffi, Gabriele D. Villani, Flavio C. Bodini, Nicola Morelli, Gianluca Milanese, Mario Silva, Nicola Sverzellati, Emanuele Michieletti
Source: European Journal of Radiology - Category: Radiology Source Type: research
AbstractThe effect of the sulfonamide class of antibiotics, namely, trimethoprim and sulfamethoxazole (TMP –SMX) on growth and metabolism of a bacterial consortium isolated from an anaerobic digester of a sewage treatment plant, was investigated. The bacterial consortium was exposed to various concentrations of TMP–SMX. The results indicated that there was no effect of TMP and SMX on the bacterial co nsortium in terms of bacterial growth and carbon and nitrate removal even at the highest concentration tested at 250 mg/L. The carbon removal was more than 90%, and the nitrate removal was more than 87% in all...
Source: Environmental Quality Management - Category: Environmental Health Authors: Tags: RESEARCH ARTICLE Source Type: research
In this study, we determined the relationship between binding of IgG or IgM and the bacterial survival in normal human serum for 267 invasive H. influenzae strains from Spain, Portugal, and the Netherlands, of which the majority (200 [75%]) were NTHi. NTHi bacteria opsonized with high levels of IgM had the lowest survival in human serum. IgM binding to the bacterial surface, but not IgG binding, was shown to be associated with complement-mediated killing of NTHi strains. We conclude that evasion of IgM binding by NTHi strains increases survival in blood, thereby potentially contributing to their ability to cause severe invasive diseases.
Source: Infection and Immunity - Category: Infectious Diseases Authors: Tags: Molecular Pathogenesis Source Type: research
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