Non-Adherence in Adult Male Patients with Community-Acquired Pneumonia: Relative Forgiveness of Amoxicillin versus Respiratory Fluoroquinolones.

The consequences of non-adherence to treatment (NAT) on antimicrobial efficacy may depend on drug forgiveness-a property that should account for pharmacokinetics (PK) and pharmacodynamics (PD) as well as interindividual variability. In this simulation study, relative forgiveness (RF) in NAT, defined as the probability of a successful PK/PD target (PTA) attained under perfect adherence compared to imperfect adherence, was evaluated for amoxicillin (AMOX) (oral 1000 mg/8 h) and two respiratory fluoroquinolones-levofloxacin (LFX) (oral 750 mg/24 h) and moxifloxacin (MOX) (oral 400 mg/24 h)-in virtual outpatients with community-acquired pneumonia for S. pneumoniae. Several NAT scenarios (delay in dose intake and a missed dose) were considered. PK characteristics of virtual patients, including variability in creatinine clearance (70-131 mL/min) and S. pneumoniae susceptibility variability associated with geographical location, were simulated in NAT. In this regard, in regions of low MIC delays from 1 h to 7 h or omission of dose ingestion would not have negative consequences on the efficacy of AMOX because of its good RF associated with the AMOX PK and PD properties; RF of LFX 750 mg or MOX 400 mg/24 h regimen vs. AMOX 1000 mg/8 h is one. However, in regions of elevated MIC for S. pneumoniae AMOX loses its RF, LFX and MOX vs. AMOX, showing higher RF (>1) depending on the CLCR of patients. These results illustrate the importance of considering the RF of antimicrobial drugs in NAT and provide a framework for further studying its implications for clinical success rates.

Key Factors in Effective Patient-Tailored Dosing of Fluoroquinolones in Urological Infections: Interindividual Pharmacokinetic and Pharmacodynamic Variability.

Fluoroquinolones (FQs) are a critical group of antimicrobials prescribed in urological infections as they have a broad antimicrobial spectrum of activity and a favorable tissue penetration at the site of infection. However, their clinical practice is not problem-free of treatment failure, risk of emergence of resistance, and rare but important adverse effects. Due to their critical role in clinical improvement, understanding the dose-response relation is necessary to optimize the effectiveness of FQs therapy, as it is essential to select the right antibiotic at the right dose for the right duration in urological infections. The aim of this study was to review the published literature about inter-individual variability in pharmacological processes that can be responsible for the clinical response after empiric dose for the most commonly prescribed urological FQs: ciprofloxacin, levofloxacin, and moxifloxacin. Interindividual pharmacokinetic (PK) variability, particularly in elimination, may contribute to treatment failure. Clearance related to creatinine clearance should be specifically considered for ciprofloxacin and levofloxacin. Likewise, today, undesired interregional variability in FQs antimicrobial activity against certain microorganisms exists. FQs pharmacology, patient-specific characteristics, and the identity of the local infecting organism are key factors in determining clinical outcomes in FQs use.

The influence of marine environment on the conservation state of Built Heritage: An overview study.

Marine aerosol is a chemical complex system formed by inorganic salts and organic matter, together with airborne particulate matter from the surrounding environment. The primary particles transported in the marine aerosol can experiment different chemical reactions in the atmosphere, promoting the so-called Secondary Marine Aerosol particles. These kinds of particles (nitrates, sulfates, chlorides etc.), together with the natural crustal or mineral particles and the metallic airborne particulate matter emitted by anthropogenic sources (road traffic, industry, etc.) form clusters which then can be deposited on building materials from a specific construction following dry deposition processes. Apart from that, the acid aerosols (e.g. CO2, SO2, NOX, etc.) present in urban-industrial environments, coming also from anthropogenic sources, can be deposited in the buildings following dry or a wet deposition mechanisms. The interactions of these natural and anthropogenic stressors with building materials can promote different kind of pathologies. In this overview, the negative influence of different marine environments (direct or diffuse influence), with or without the influence of an urban-industrial area (direct or diffuse), on the conservation state of historical constructions including a wide variety of building materials (sandstones, limestones, artificial stones, bricks, plasters, cementitious materials, etc.) is presented.

Metaplasia ósea en relación con una denocarcinoma de colon / Osseous metaplasia in colonic adenocarcinoma

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[Tonsillar hypertrophy and mesenteric adenopathies as the main manifestations in a patient with Whipple's disease]. / Hipertrofia amigdalar y adenopatías mesentéricas como manifestaciones predominantes en un paciente con enfermedad de Whipple.

Whipple's disease is an infrequent chronic infection caused by Tropheryma whipplei, identified in 1992. Intestinal, articular, central nervous system and cardiac involvement is common. The presence of abdominal adenopathies, especially mesenteric adenopathies, without peripheral adenopathies or gastrointestinal, articular, neurological or cardiac symptoms is rare. We present the case of a male patient with tonsillar hypertrophy, mesenteric adenopathies, fever and constitutional syndrome, leading to suspicion of lymphoma. Biopsy findings of the lingual tonsil and mesenteric adenopathies were compatible with Whipple's disease. The diagnosis was confirmed by blood polymerase chain reaction.

Hipertrofia amigdalar y adenopatías mesentéricas como manifestaciones predominantes en un paciente con enfermedad de Whipple / Tonsillar hypertrophy and mesenteric adenopathies as the main manifestations in a patient with Whipple’s disease

La enfermedad de Whipple es una infección crónica poco habitual, cuyo germen causal, Tropheryma whipplei, fue identificado en 1992. En esta entidad es frecuente la participación del intestino, las articulaciones, el sistema nervioso central y el corazón. La presencia de adenopatías abdominales, sobre todo mesentéricas, sin adenopatías periféricas ni síntomas digestivos, articulares, neurológicos o cardíacos, es rara. Se presenta el caso de un paciente con hipertrofia amigdalar, adenopatías mesentéricas, fiebre y síndrome constitucional, en el que se sospechó un linfoma. La biopsia de la amígdala lingual y las adenopatías mesentéricas fueron compatibles con enfermedad de Whipple, diagnóstico que se confirmó mediante reacción en cadena de la polimerasa en sangre

Whipple's disease is an infrequent chronic infection caused by Tropheryma whipplei, identified in 1992. Intestinal, articular, central nervous system and cardiac involvement is common. The presence of abdominal adenopathies, especially mesenteric adenopathies, without peripheral adenopathies or gastrointestinal, articular, neurological or cardiac symptoms is rare. We present the case of a male patient with tonsillar hypertrophy, mesenteric adenopathies, fever and constitutional syndrome, leading to suspicion of lymphoma. Biopsy findings of the lingual tonsil and mesenteric adenopathies were compatible with Whipple's disease. The diagnosis was confirmed by blood polymerase chain reaction (AU)