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1.
Chem Commun (Camb) ; 52(66): 10117-20, 2016 Aug 09.
Article in English | MEDLINE | ID: mdl-27387975

ABSTRACT

The convergent preparation of Janus molecular nanoparticles by thiourea-"clicking" of α,α'-trehalose halves has been implemented; the strategy allows access to macrocyclic derivatives with seggregated cationic and lipophilic domains that in the presence of DNA undergo pH-dependent self-assembly into lamellar superstructures, as established by electrochemical, structural (SAXS), microscopical (TEM) and computational techniques, that mediate transfection in vitro and in vivo.


Subject(s)
Click Chemistry/methods , DNA/chemistry , Nanoparticles/chemistry , Oligosaccharides/chemistry , Trehalose/chemistry , Animals , COS Cells , Chlorocebus aethiops , DNA/metabolism , Hydrogen-Ion Concentration , Nanoparticles/metabolism , Oligosaccharides/metabolism , Scattering, Small Angle , Trehalose/metabolism , X-Ray Diffraction
2.
Emergencias (St. Vicenç dels Horts) ; 17(2): 67-71, abr. 2005. tab
Article in Es | IBECS | ID: ibc-038249

ABSTRACT

Fundamento: Analizar la correlación entre la semiología auscultatoria y las imágenes radiológicas compatibles con condensación neumónica. Métodos: Se seleccionó una muestra de 43 pacientes, que acudieron al servicio de urgencias del Hospital Universitario Marqués de Valdecilla durante un mes, con clínica compatible con neumonía adquirida en la comunidad (NAC). Se registraron factores de comorbilidad y sintomatología asociada. Se realizó auscultación por tres clínicos ciegos respecto al resultado radiológico final, siguiendo los patrones auscultatorios habituales, comparando los hallazgos semiológicos con las imágenes radiológicas encontradas compatibles con condensación. Resultados: La edad media de los pacientes fue de 58±23 años con un rango de edad de 17 a 90. Veintitres casos (53,5%) eran mujeres. Los resultados muestran la poca rentabilidad diagnóstica de la semiología auscultatoria; los roncus son el signo de mejor rentabilidad en cualquiera de las localizaciones anatómicas (con una sensibilidad aproximada del 50%) excepto en segmentos basales de los lóbulos inferiores. La auscultación de estertores crepitantes, en cambio, muestra una pobre rentabilidad (con unas sensibilidades que oscilan entre el el 6 y 21%). Conclusiones: Destaca la baja sensibilidad de la semiologia auscultatoria, así como una alta especificidad que garantiza la ausencia de falsos positivos (AU)


Background: To determine the relationship between auscultation and radiography patterns of pneumonia. Methods: We selected 43 consecutive Emergency Department clinical charts of patients that were presented in the hospital with the suspect of community-acquired pneumonia (CAP). Records were analyzed for: age, sex, symptoms and presence of underlying conditions. Comprehensive lung auscultation was performed sequentially by 3 physicians who were blind to clinical history, laboratory findings, and x-ray results and after that we compared their findings with the chest radiographs of these patients. Results: Patients were analyzed with ages between 17 and 90 years old, with a mean age of 58 years (SD = 22,9). 23 (53.5%) were women and 20 (46.5%) men Bronchial breath sounds were the best diagnostic tool except in segments of the lower lobes of the lung.. Conclusion: The traditional chest auscultation is not sufficiently accurate on its own to confirm or exclude the diagnosis of pneumonia (AU)


Subject(s)
Male , Female , Adult , Aged , Adolescent , Middle Aged , Humans , Pneumonia/diagnosis , Respiratory Sounds/diagnosis , Sensitivity and Specificity , Comorbidity/trends , Radiography, Thoracic
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