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AIM: To explore the perceptions and experiences of COVID-19 patients who received outpatient treatment in public health services in the Metropolitan Region of Chile. METHODS: An exploratory rapid qualitative study was conducted. Individual, telephonic and semi-structured interviews were conducted with patients who received a COVID-19 diagnosis confirmed by a PCR test and who had outpatient treatment for the disease. A thematic analysis was performed. RESULTS: Nine interviews were conducted (six female and three male participants). The main emerging themes were: life before COVID-19, living with the disease at home, recovery process, and Ineffective sanitary measures. Most of the participants highlighted the lack of information about their health and the uncertainty about COVID-19 as the cause of fear for their wellbeing. They also felt guilty for putting at risk others due to their COVID-19-positive status. CONCLUSION: The experiences of patients show the need to strengthen communication and information strategies for patients who receive outpatient care during the pandemic. This is key to reducing misinformation, fear and uncertainty about the progression of the disease and the potential recovery. Consequently, this could impact clinical outcomes and patient satisfaction.
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Atención Ambulatoria , COVID-19 , Investigación Cualitativa , Humanos , COVID-19/psicología , COVID-19/epidemiología , Masculino , Chile , Femenino , Adulto , Persona de Mediana Edad , SARS-CoV-2 , Anciano , Entrevistas como Asunto , Pandemias , PercepciónRESUMEN
Introduction. Staphylococcus aureus is a leading agent in community-acquired bacteraemia (CAB) and has been linked to elevated mortality rates and methicillin resistance in Costa Rica.Gap statement and aim. To update and enhance previous data obtained in this country, we analysed the clinical manifestations of 54 S. aureus CAB cases in a tertiary hospital and delineated the sequence types (STs), virulome, and resistome of the implicated isolates.Methodology. Clinical information was retrieved from patient files. Antibiotic susceptibility profiles were obtained with disc diffusion and automated phenotypic tests. Genomic data were exploited to type the isolates and for detection of resistance and virulence genes.Results. Primary infections predominantly manifested as bone and joint infections, followed by skin and soft tissue infections. Alarmingly, 70% of patients continued to exhibit positive haemocultures beyond 48 h of treatment modification, with nearly a quarter requiring mechanical ventilation or developing septic shock. The 30-day mortality rate reached an alarming 40%. More than 60% of the patients were found to have received suboptimal or inappropriate antibiotic treatment, and there was an alarming tendency towards the overuse of third-generation cephalosporins as empirical treatment. Laboratory tests indicated elevated creatinine levels, leukocytosis, and bandaemia within the first 24 h of hospitalization. However, most showed improvement after 48 h. The isolates were categorized into 13 STs, with a predominance of representatives from the clonal complexes CC72 (ST72), CC8 (ST8), CC5 (ST5, ST6), and CC1 (ST188). Twenty-four isolates tested positive for mecA, with ST72 strains accounting for 20. In addition, we detected genes conferring acquired resistance to aminoglycosides, MLSB antibiotics, trimethoprim/sulfamethoxazole, and mutations for fluoroquinolone resistance in the isolate collection. Genes associated with biofilm formation, capsule synthesis, and exotoxin production were prevalent, in contrast to the infrequent detection of enterotoxins or exfoliative toxin genes.Conclusions. Our findings broaden our understanding of S. aureus infections in a largely understudied region and can enhance patient management and treatment strategies.
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Antibacterianos , Bacteriemia , Infecciones Comunitarias Adquiridas , Pruebas de Sensibilidad Microbiana , Infecciones Estafilocócicas , Staphylococcus aureus , Centros de Atención Terciaria , Humanos , Costa Rica/epidemiología , Centros de Atención Terciaria/estadística & datos numéricos , Infecciones Comunitarias Adquiridas/microbiología , Infecciones Comunitarias Adquiridas/epidemiología , Infecciones Comunitarias Adquiridas/mortalidad , Infecciones Estafilocócicas/microbiología , Infecciones Estafilocócicas/epidemiología , Infecciones Estafilocócicas/tratamiento farmacológico , Infecciones Estafilocócicas/mortalidad , Bacteriemia/microbiología , Bacteriemia/epidemiología , Bacteriemia/mortalidad , Bacteriemia/tratamiento farmacológico , Masculino , Staphylococcus aureus/genética , Staphylococcus aureus/efectos de los fármacos , Staphylococcus aureus/aislamiento & purificación , Persona de Mediana Edad , Femenino , Anciano , Adulto , Antibacterianos/uso terapéutico , Antibacterianos/farmacología , Anciano de 80 o más Años , Adulto Joven , Adolescente , Factores de Virulencia/genética , NiñoRESUMEN
Monomeric [Co(SDZ)2phen] (1) and [Co(SDZ)(bq)Cl] (2) complexes (SDZ = sulfadiazine, phen = 1,10-phenanthroline, and bq = 2,2'-biquinoline) have been synthesized and characterized. X-ray diffraction studies indicate that SDZ acts as a bidentate ligand coordinating through the sulfonamide and the pyrimidine N atoms in both compounds. In complex 1, the coordination sphere consists of two SDZ ligands and a bis-chelating phen ligand, giving rise to a CoN6 coordination sphere. On the other hand, 2 has a CoN4Cl core, with two N-atoms from SDZ and two from the bq ligand. Both compounds have been studied by dc and ac magnetometry and shown to display slow magnetic relaxation under an optimum external dc field (1 kOe) at low temperatures. Moreover, compound 2 displays long range magnetic ordering provided by spin-canted antiferromagnetism, which has been characterized by further field-dependent magnetic susceptibility measurements, FC/ZFC curves, hysteresis loops and frequency-independent ac curves. The signs of the calculated D parameters, positive in 1 and negative in 2, have been rationalized according to the two lowest-lying transitions in the orbital energy diagrams derived from ab initio ligand field theory (AILFT). In a subsequent attempt to reveal the possible hidden zero-field SMM behaviour, Ni(II)-based 3 and Co(II)-doped Ni(II)-based (with a Ni : Co ratio of 0.9 : 0.1) heterometallic compound 2Ni were synthesized.
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Introducción: El síndrome de hueso hambriento (SHH) es una complicación asociada a la realización de una paratiroidectomía, definido por la persistencia de más de 4 días de hipocalcemia (Calcio sérico menor a 8,5 mg/dl) con requerimiento de suplementación de calcio endovenoso. Este es el primer estudio realizado en Colombia, que tiene el objetivo de precisar la prevalencia de SHH en un Hospital de referencia en Latinoamérica. Metodología: Se realizó un estudio de corte transversal retrospectivo, se revisaron los registros de historias clínicas de pacientes con antecedente de hiperparatiroidismo primario, secundario y terciario que requirieron paratiroidectomía parcial o total en el Hospital de San José de Bogotá, entre Enero del 2013 y Diciembre de 2021. Resultados: Se identificaron 247 pacientes con diagnóstico de hiperparatiroidismo, la mayoría de los pacientes (65,1%) fueron hombres, con una edad mediana de 50,9 años (rango de 25 a 71 años). La prevalencia del SHH fue del 11,7%, con una relación mujer-hombre de 1.5:1, no hubo casos de patología maligna. Los niveles de hormona paratiroidea séricos preoperatorios tuvieron una correlación estadísticamente significativa con los niveles de hormona paratiroidea postquirúrgica. Conclusiones: El síndrome de hueso hambriento es una complicación que puede presentarse posterior a la realización de una paratiroidectomía. Este estudio presenta una prevalencia más baja que la descrita en la literatura.
Introduction: The Hungry Bone Syndrome (HBS) is a rare complication associated with parathyroidectomy, defined as hypocalcemia (serum calcium less than 8,5 mg/dl) that persist more than 4 days and requires intravenous calcium supplementation. This is the first study made in Colombia with the objective to determine the prevalence of HBS in a reference hospital in Latin America. Methods: A retrospective cross-sectional study was conducted; medical records were reviewed from patients with medical history of primary, secondary, and tertiary hyperparathyroidism that require partial or total parathyroidectomy in San Jose Hospital in Bogota, between January 2013 and December 2021. Results: 247 patients were identified with hyperparathyroidism, most patients were males (65.1%), with a mean age of 50.9 years old (range 25-71 years old). The prevalence of HBS was 11.7%, with a ratio women-men 1.5:1, no malignant pathology was described. Preoperative parathyroid hormone levels and postoperative parathyroid hormone levels were statistically significant. Conclusions: The Hungry Bone Syndrome is a complication that can be present after a parathyroidectomy. This study presents a lower prevalence than the literature described.
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Hymenoptera venom immunotherapy (HVI) is a long-term effective treatment to avoid new systemic reactions in patients with Hymenoptera allergy. The sting challenge test is considered the gold standard to confirm the tolerance. However, the use of this technique is not generalized in clinical practice, being the basophil activation test (BAT), which functionally explores allergen response, an alternative that does not entail any of the provocation risks associated with the sting challenge test. This study reviews the publications that used the BAT to follow up and evaluate the success of the HVI. Studies assessing the changes between a baseline BAT before the start and BATs performed between the starting and maintenance phases of the HVI were selected. Ten articles were found, comprising information from 167 patients, of which 29% used the sting challenge test. The studies concluded the importance of evaluating the responses with submaximal allergen concentrations, which reflect basophil sensitivity, to monitor the HVI using the BAT. It was also observed that changes in the maximum response (reactivity) could not reflect the clinical status of tolerance, particularly in the initial phases of HVI.
La inmunoterapia con veneno de himenópteros (IVH) es, a largo plazo, un tratamiento eficaz para evitar nuevas reacciones sistémicas en pacientes con alergia a este tipo de insectos. La prueba de repicadura controlada es el estudio de referencia para confirmar la tolerancia del individuo. Sin embargo, no se ha generalizado su indicación clínica, por lo que la prueba de activación de basófilos (TAB) resulta una buena alternativa, pues valora de manera funcional la respuesta al alérgeno y está exenta de los riesgos asociados con la provocación. En esta revisión se explora la utilidad de la TAB en el seguimiento y valoración del éxito de la IVH. Se seleccionaron estudios que evalúan los cambios entre una TAB basal y en otro momento de la fase de inicio o mantenimiento de la IVH. Se incluyeron 10 estudios con datos de 167 pacientes, de los que el 29% había tenido prueba de repicadura controlada. Para vigilar la eficacia de la IVH debe explorarse la respuesta del basófilo, con la determinación de las concentraciones submáximas del alérgeno, que reflejan la sensibilidad del basófilo. Los cambios en la respuesta máxima (reactividad) no pueden aportar información del estado de tolerancia, especialmente en las fases iniciales de la IVH.
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Prueba de Desgranulación de los Basófilos , Desensibilización Inmunológica , Humanos , Estudios de Seguimiento , Basófilos , Tolerancia InmunológicaRESUMEN
BACKGROUND: Convalescent plasma (CP) has been widely used to treat COVID-19 and is under study. However, the variability in the current clinical trials has averted its wide use in the current pandemic. We aimed to evaluate the safety and efficacy of CP in severe coronavirus disease 2019 (COVID-19) in the early stages of the disease. METHODS: A randomized controlled clinical study was conducted on 101 patients admitted to the hospital with confirmed severe COVID-19. Most participants had less than 14 days from symptoms onset and less than seven days from hospitalization. Fifty patients were assigned to receive CP plus standard therapy (ST), and 51 were assigned to receive ST alone. Participants in the CP arm received two doses of 250 mL each, transfused 24 h apart. All transfused plasma was obtained from "super donors" that fulfilled the following criteria: titers of anti-SARS-CoV-2 S1 IgG ≥ 1:3200 and IgA ≥ 1:800 antibodies. The effect of transfused anti-IFN antibodies and the SARS-CoV-2 variants at the entry of the study on the overall CP efficacy was evaluated. The primary outcomes were the reduction in viral load and the increase in IgG and IgA antibodies at 28 days of follow-up. The per-protocol analysis included 91 patients. RESULTS: An early but transient increase in IgG anti-S1-SARS-CoV-2 antibody levels at day 4 post-transfusion was observed (Estimated difference [ED], - 1.36; 95% CI, - 2.33 to - 0.39; P = 0.04). However, CP was not associated with viral load reduction in any of the points evaluated. Analysis of secondary outcomes revealed that those patients in the CP arm disclosed a shorter time to discharge (ED adjusted for mortality, 3.1 days; 95% CI, 0.20 to 5.94; P = 0.0361) or a reduction of 2 points on the WHO scale when compared with the ST group (HR adjusted for mortality, 1.6; 95% CI, 1.03 to 2.5; P = 0.0376). There were no benefits from CP on the rates of intensive care unit admission (HR, 0.82; 95% CI, 0.35 to 1.9; P = 0.6399), mechanical ventilation (HR, 0.66; 95% CI, 0.25 to 1.7; P = 0.4039), or mortality (HR, 3.2; 95% CI, 0.64 to 16; P = 0.1584). Anti-IFN antibodies and SARS-CoV-2 variants did not influence these results. CONCLUSION: CP was not associated with viral load reduction, despite the early increase in IgG anti-SARS-CoV-2 antibodies. However, CP is safe and could be a therapeutic option to reduce the hospital length of stay. Trial registration NCT04332835.
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COVID-19 , Infecciones por Coronavirus , Neumonía Viral , Anticuerpos Antivirales , Betacoronavirus , COVID-19/terapia , Humanos , Inmunización Pasiva , Inmunoglobulina A , Inmunoglobulina G/uso terapéutico , SARS-CoV-2 , Resultado del Tratamiento , Sueroterapia para COVID-19RESUMEN
El síndrome de intolerancia a múltiples medicamentos (MDIS, por sus siglas en inglés) se caracteriza por la intolerancia a dos o más medicamentos no relacionados. Tiene una prevalencia baja y es común en pacientes con polifarmacia. A pesar de que las reacciones adversas a los medicamentos son muy frecuentes, es raro que los pacientes debuten con este síndrome, el cual tiene implicaciones clínicas de leves a graves que afectan su vida; de acuerdo con esto varían el abordaje y su manejo. La sintomatología presentada varía desde síntomas gastrointestinales como reflujo gastroesofágico, dolores musculares y cefalea, hasta síntomas cutáneos; estos son los más frecuentes, tales como urticaria y erupciones maculopapulares o presentaciones menos comunes como el síndrome de Stevens-Johnson. El MDIS es causado por una amplia variedad de fármacos; por ello el conocimiento del síndrome, así como un adecuado interrogatorio de los antecedentes del paciente, es necesario para realizar un diagnóstico oportuno e instaurar un manejo adecuado y preventivo, evitando reacciones adversas que pongan en riesgo su vida. Con los hallazgos del cuadro clínico en la paciente, y basados en los antecedentes alérgicos presentados anteriormente a diferentes medicamentos no relacionados entre ellos, más la presentación de un rash maculopapular generalizado posterior a la administración de trimetoprim/sulfametoxazol se realiza el diagnóstico de MDIS. Se decide cambiar de medicamento por fosfomicina, con una consecuente evolución favorable. (AU)
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Humanos , Femenino , Adulto , Erupciones por Medicamentos/diagnóstico , Síndrome de Hipersensibilidad a Medicamentos/diagnóstico , Síndrome de Hipersensibilidad a Medicamentos/fisiopatología , Combinación Trimetoprim y Sulfametoxazol/efectos adversos , Loratadina/administración & dosificación , Polifarmacia , Fosfomicina/administración & dosificaciónRESUMEN
Life-threatening COVID-19 is associated with strong inflammation, where an IL-6-driven cytokine storm appears to be a cornerstone for enhanced pathology. Nonetheless, the specific inhibition of such pathway has shown mixed outcomes. This could be due to variations in the dose of tocilizumab used, the stage in which the drug is administered or the severity of disease presentation. Thus, we performed a retrospective multicentric study in 140 patients with moderate to critical COVID-19, 79 of which received tocilizumab in variable standard doses (< 400 mg, 400-800 mg or > 800 mg), either at the viral (1-7 days post-symptom onset), early inflammatory (8-15) or late inflammatory (16 or more) stages, and compared it with standard treated patients. Mortality, reduced respiratory support requirements and pathology markers were measured. Tocilizumab significantly reduced the respiratory support requirements (OR 2.71, CI 1.37-4.85 at 95%) and inflammatory markers (OR 4.82, CI 1.4-15.8) of all patients, but mortality was only reduced (4.1% vs 25.7%, p = 0.03) when the drug was administered at the early inflammatory stage and in doses ranging 400-800 mg in severely-ill patients. Despite the apparent inability of Tocilizumab to prevent the progression of COVID-19 into a critical presentation, severely-ill patients may be benefited by its use in the early inflammatory stage and moderate doses.
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Anticuerpos Monoclonales Humanizados/uso terapéutico , Tratamiento Farmacológico de COVID-19 , Proteína C-Reactiva/análisis , COVID-19/mortalidad , COVID-19/patología , Relación Dosis-Respuesta a Droga , Productos de Degradación de Fibrina-Fibrinógeno/análisis , Humanos , Oportunidad Relativa , Estudios Retrospectivos , SARS-CoV-2/aislamiento & purificación , Índice de Severidad de la Enfermedad , Análisis de Supervivencia , Tasa de SupervivenciaRESUMEN
Resumen La neumatosis quística intestinal se refiere a la presencia de gas dentro de la pared del intestino delgado o grueso, puede ser asintomática y potencialmente mortal cuando se presentan complicaciones. Las causas de esta entidad incluyen enfermedades pulmonares, sistémicas, intestinales, medicamentosas, causas iatrogénicas y traumáticas. Se presenta el caso de un hombre de 35 años de edad sin antecedentes de importancia que consultó por dolor en el hemiabdomen inferior, con un diagnóstico imagenológico de neumatosis quística intestinal, neumoperitoneo y peritonitis, complicación secundaria a esta patología, por lo que se realizó el manejo quirúrgico, laparotomía y resección de segmento colónico, que se analizó histopatológicamente y se confirmó el diagnostico; finalmente, fue dado de alta después de finalizar el tratamiento antibiótico.
Abstract Cystic intestinal pneumatosis refers to the presence of gas within the wall of the small or large intestine. It can be asymptomatic and life-threatening when complications occur. The causes of this entity include pulmonary, systemic, intestinal, drug, iatrogenic and traumatic factors. The following is the case of a 35-year-old man who presented with pain in his lower hemiabdomen and had no previous medical history. Imaging scans showed intestinal cystic pneumatosis and secondary pneumoperitoneum and peritonitis. The patient was taken to laparotomy, and a colonic segment was resected and sent to pathology. The diagnosis was confirmed by a biopsy. The patient was discharged after completing antibiotic treatment.
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Humanos , Masculino , Adulto , Peritonitis , Neumatosis Cistoide Intestinal , Gases , Intestino Grueso , Intestino DelgadoRESUMEN
A new species of the Liolaemus capillitas clade is described. Liolaemus galactostictos sp. nov. differs from other members of its group by a combination of morphological and molecular traits, in particular its black dorsal coloration pattern not found in any other Liolaemus species. Liolaemus galactostictos sp. nov. is only known from its type locality. This new species is found in rocky fields surrounded by grasslands on the top of the Velasco Mountains, a ¨sky island environment¨, in northwestern Argentina. As well as other members of its clade this species seems to be strictly saxicolous, viviparous and feeds on insects.
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Lagartos , Animales , Argentina , Lagartos/genéticaRESUMEN
Purpose: The purpose of this study was to evaluate the safety and efficacy across time, of patients topically treated with Benozzi's method for presbyopia. Methods: A nonrandomized case series retrospective study was developed, including patients with emmetropia with binocular uncorrected distance visual acuity (UDVA) of 25/20 or better, and with uncorrected near visual acuity (UNVA) at least Jaeger 2 or worse. The study was set in Buenos Aires, Argentina, from January 2011 to June 2018, with at least 1-year follow-up. Patients were treated with pilocarpine and diclofenac preservative-free eye drops (Benozzi Method; US 8.524.758 B2, EP1.938.839 B1), and the main outcome measured was binocular UNVA at different follow-up times. Other parameters, as the UDVA and presence of side effects, were evaluated. Results: A total of 910 patients were included with a mean age at baseline of 48.67 ± 3.72 years old (range, 40-59 years). The baseline UNVA was 4.74 ± 1.53 and at 8 years of follow-up was decreased to 1.36 ± 0.48 (Jaeger scale). The mean binocular UDVA at baseline was 0.00 ± 0.01 logarithm of the minimum angle of resolution (logMAR) and after 8 years of follow-up was 0.03 ± 0.04 logMAR. All side effects reported (decrease of light perception, headaches, symptoms of ocular surface dryness, and dizziness) were spontaneously resolved in patients who continued with the treatment. Conclusions: The efficacy of the pharmacological treatment of presbyopia to improve the UNVA without affecting the UDVA is shown. Side effects were well tolerated and resolved before 1 year of treatment. Translational Relevance: This is a nonsurgical option for patients with emmetropic presbyopia who do not wish to wear glasses, which is a pharmacological treatment with eye drops.
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Presbiopía , Adulto , Argentina , Humanos , Persona de Mediana Edad , Soluciones Oftálmicas , Presbiopía/tratamiento farmacológico , Refracción Ocular , Estudios RetrospectivosRESUMEN
Introducción El síndrome de implantación de cemento óseo (SICO) es una complicacion intraoperatoria frecuente y potencialmente devastadora en pacientes sometidos a artroplastia de cadera cementada. Objetivo Describir la frecuencia del SICO en pacientes llevados a artroplastia total o parcial de cadera, mayores de 50 años, en el Hospital de San José de Bogotá, entre el 1 de enero del 2012 al 31 de Enero del 2018. Metodología Estudio serie de casos. Se revisaron los registros médicos de pacientes adultos mayores de 50 años con indicación de Artroplastia o Hemiatroplastia. Se analizaron las variables perioperatorias a través del registro de Anestesia. Mediante la clasificación de Donaldson se determinó el grado de SICO. Se emplearon estadísticas descriptivas y análisis de correspondencias múltiples para explorar la relación entre las variables. Resultados Incluimos 49 pacientes con una media de edad de 78 años (DE +/- 9.9), 39 eran mujeres (79.6%) y 37 (75.5%) tuvieron una clasificacion ASA II. Documentamos la presencia de SICO en 8 pacientes (16.3%): de los cuales 5 correspondian a Grado 1, 2 Grado 2 y 1 a Grado 3 con requerimiento de UCI. 7 eran mujeres; todos tenían antecedente de hipertension arterial, 2 diabetes mellitus, 2 EPOC y 1 osteoporosis. Ninguno reportó ingesta de Warfarina. Conclusiones SICO es un fenómeno frecuente en la artroplastia y hemiartroplastia cementada, siendo mayor en el sexo femenino, documentandose la presencia de predictores de severidad clasificacion ASA II III y el antecedente de EPOC en nuestro hospital.
Background The bone cement implantation syndrome (BCIS) is a frequent and potentially devastating intraoperative complication in patients undergoing cemented hip arthroplasty. The objective of study is to describe the frequency of BCIS in patients undergoing total or partial hip arthroplasty. Methods Case series study. We reviewed the medical records of adult patients over 50 years of age with an indication for Arthroplasty or Hemiatroplasty. The perioperative variables were analyzed through the Anesthesia registry. The degree of SICO was determined by Donaldson classification. Descriptive statistics and multiple correspondence analysis were used to explore the relationship between the variables. Results We included 49 patients with an average age of 78 years (SD +/- 9.9), 39 were women (79.6%) and 37 (75.5%) had an ASA II classification. We documented the presence of SICO in 8 patients (16.3%): of which 5 corresponded to Grade 1, 2 Grade 2 and 1 to Grade 3 with ICU requirement. 7 were women; all were hypertensive, 2 diabetes mellitus, 2 COPD and 1 osteoporosis. None reported Warfarin ingestion. Discussion BCIS is a frequent phenomenon in the arthroplasty and cemented hemiarthroplasty, being higher in the female sex, documenting the presence of predictors of severity ASA II -III classification and the history of COPD in our hospital.
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Humanos , Cementos para Huesos , Pronóstico , Factores de Riesgo , Fracturas del Cuello Femoral , HemiartroplastiaRESUMEN
Citrate is an ubiquitous compound in nature. However, citrate fermentation is present only in a few pathogenic or nonpathogenic microorganisms. The citrate fermentation pathway includes a citrate transporter, a citrate lyase complex, an oxaloacetate decarboxylase and a regulatory system. Enterococcus faecalis is commonly present in the gastro-intestinal microbiota of warm-blooded animals and insect guts. These bacteria can also cause infection and disease in immunocompromised individuals. In the present study, we performed whole genome analysis in Enterococcus strains finding that the complete citrate pathway is present in all of the E. faecalis strains isolated from such diverse habitats as animals, hospitals, water, milk, plants, insects, cheese, etc. These results indicate the importance of this metabolic preservation for persistence and growth of E. faecalis in different niches. We also analyzed the role of citrate metabolism in the E. faecalis pathogenicity. We found that an E. faecalis citrate fermentation-deficient strain was less pathogenic for Galleria mellonella larvae than the wild type. Furthermore, strains with deletions in the oxaloacetate decarboxylase subunits or in the α-acetolactate synthase resulted also less virulent than the wild type strain. We also observed that citrate promoters are induced in blood, urine and also in the hemolymph of G. mellonella. In addition, we showed that citrate fermentation allows E. faecalis to grow better in blood, urine and G. mellonella. The results presented here clearly indicate that citrate fermentation plays an important role in E. faecalis opportunistic pathogenic behavior.
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Ácido Cítrico/metabolismo , Enterococcus faecalis/patogenicidad , Fermentación/genética , Infecciones por Bacterias Grampositivas/microbiología , Infecciones Oportunistas/microbiología , Animales , Proteínas Bacterianas/genética , Proteínas Bacterianas/metabolismo , Carboxiliasas/genética , Carboxiliasas/metabolismo , Proteínas Portadoras/genética , Proteínas Portadoras/metabolismo , Modelos Animales de Enfermedad , Enterococcus faecalis/genética , Enterococcus faecalis/inmunología , Enterococcus faecalis/metabolismo , Fermentación/inmunología , Regulación Bacteriana de la Expresión Génica , Genoma Bacteriano/genética , Infecciones por Bacterias Grampositivas/inmunología , Humanos , Redes y Vías Metabólicas/genética , Mariposas Nocturnas/inmunología , Mariposas Nocturnas/microbiología , Familia de Multigenes/genética , Infecciones Oportunistas/inmunología , Regiones Promotoras Genéticas/genética , Secuenciación Completa del GenomaRESUMEN
Two new species of the Liolaemus donosobarrosi clade are described. Liolaemus tirantii sp. nov. and Liolaemus calliston sp. nov. differ from other members of their clade by a combination of coloration characters, morphometric and molecular traits. Liolaemus tirantii sp. nov. is known from three localities separated only a few kilometers from each other and Liolaemus calliston sp. nov. is known only from the type locality. Both species inhabit a region strongly impacted by oil and gas extraction but their conservation status is unknown.
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Lagartos , Animales , ArgentinaRESUMEN
Ulcerative Colitis (UC) is associated to Primary Sclerosing Cholangitis (PSC) in 80% of cases, and this association is more common than the one with Crohnâ™s disease. Nevertheless, the prevalence of PSC in patients with UC is only 2.9% in Latin America. We present the case of a female patient who presents a clinical history characterized for chronic diarrhea of one year of evolution, associated to fever, oral ulcers and loss of weight. In the laboratory results there is an elevation in the following: alkaline phosphatase, GGT, ALT and AST, for that reason we decide to do an abdominal ultrasound finding a hepatomegaly. In the colonoscopy we found an ulcerative colitis. Later, we do a magnetic resonance cholangiopancreatography, because of the diagnosis of UC and the abnormalities at the liver function tests, diagnosing PSC associated to UC. At that moment, the patient starts treatment with sulfasalazine that is stopped because of an adverse effect, starting prednisone and azathioprine. The patient then is discharged with the medication already mentioned and has a favorable clinical outcome. We decide to report the case because is the second reported case in Peru, being this association not commonly found in the South hemispheric.
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Colangitis Esclerosante/diagnóstico , Colitis Ulcerosa/diagnóstico , Adulto , Colangitis Esclerosante/complicaciones , Colitis Ulcerosa/complicaciones , Femenino , HumanosRESUMEN
The integrative taxonomy framework allows developing robust hypotheses of species limits based on the integration of results from different data sets and analytical methods. In this work, we test a candidate species hypothesis previously suggested based on molecular data, with geometric and traditional morphometrics analyses (multivariate and univariate). This new lizard species is part of the Phymaturus patagonicus group (payuniae clade) that is distributed in Neuquén and Mendoza provinces (Argentina). Our results showed that Phymaturus rahuensis sp. nov. differs from the other species of the payuniae clade by a higher number of midbody scales, and fewer supralabials scales, finger lamellae and toe lamellae. Also, its multidimensional spaces, both based on continuous lineal variables and geometric morphometrics (shape) characters, do not overlap with those of the other species in this clade. The results of the morphometric and geometric morphometric analyses presented here, coupled with previously published molecular data, represent three independent lines of evidence that support the diagnosis of this new taxon.
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Lagartos/clasificación , Distribución Animal , Estructuras Animales/anatomía & histología , Estructuras Animales/crecimiento & desarrollo , Animales , Argentina , Tamaño Corporal , Ecosistema , Femenino , Lagartos/anatomía & histología , Lagartos/crecimiento & desarrollo , Masculino , Tamaño de los ÓrganosRESUMEN
La Colitis Ulcerativa (CU) está asociada a la Colangitis Esclerosante primaria (CEP) en 80% de los casos y esta concurrencia entre CEP y CU es mayor en comparación con la enfermedad de Crohn. Sin embargo, la prevalencia de CEP en pacientes con CU es sólo 2,9% en Latinoamérica. Presentamos el caso de una paciente mujer que presenta un cuadro caracterizado por diarrea crónica de un año de evolución, asociado a sensación de alza térmica, ulceras orales y pérdida de peso. En los exámenes auxiliares se encuentra una fosfatasa alcalina, GGT, TGO y TGP elevados por ello se decide realizar una ecografía abdominal encontrándose hepatomegalia. En el examen de colonoscopia se encuentran hallazgos compatibles con colitis ulcerativa. Entonces se realiza una colangioresonancia debido al diagnóstico de CU y las anormalidades en los valores de función hepática; diagnosticándose CEP asociada a CU. Es así que la paciente recibe tratamiento con sulfazalasina que se suspende por efecto adverso, iniciándose prednisona y azatioprina. La paciente es dada de alta con el tratamiento ya descrito y tiene buena evolución clínica. Se decide reportar el presente caso debido a que es el segundo caso reportado en el Perú, siendo esta asociación poco frecuente en el hemisferio sur...
Ulcerative Colitis (UC) is associated to Primary Sclerosing Cholangitis (PSC) in 80% of cases, and this association is more common than the one with CrohnÆs disease. Nevertheless, the prevalence of PSC in patients with UC is only 2.9% in Latin America. We present the case of a female patient who presents a clinical history characterized for chronic diarrhea of one year of evolution, associated to fever, oral ulcers and loss of weight. In the laboratory results there is an elevation in the following: alkaline phosphatase, GGT, ALT and AST, for that reason we decide to do an abdominal ultrasound finding a hepatomegaly. In the colonoscopy we found an ulcerative colitis. Later, we do a magnetic resonance cholangiopancreatography, because of the diagnosis of UC and the abnormalities at the liver function tests, diagnosing PSC associated to UC. At that moment, the patient starts treatment with sulfasalazine that is stopped because of an adverse effect, starting prednisone and azathioprine. The patient then is discharged with the medication already mentioned and has a favorable clinical outcome. We decide to report the case because is the second reported case in Peru, being this association not commonly found in the South hemispheric...
Asunto(s)
Humanos , Adulto , Colangitis Esclerosante , Colitis UlcerosaRESUMEN
Actualmente la interpretación de la citología en lavado broncoalveolar (BAL) se realiza por medio de técnicas de citología convencional o en cytospin. Esta última obtiene preparaciones concentradas en un área de 6mm para su visualización, con lo que se disminuye el tiempo de lectura por cada muestra, sin deterioro de la calidad.Objetivo: Determinar la diferencia del tiempo de lectura y la calidad de la técnica convencional comparada con la técnica en cytospin.Diseño del estudio: Estudio de corte transversal. Se incluyeron muestras de BAL. Las muestras se procesaron con técnica convencional y con técnica por cytospin. Se comparó el tiempo de lectura para el diagnóstico de cada técnica. Se evaluó la calidad considerando: preservación celular y extendido inflamatorio. La diferencia de tiempos entre las técnicas se determinó por la prueba de Wilcoxon.Resultados: Se procesaron 80 láminas de BAL: 40 casos con la técnica convencional y 40 casos con la técnica en cytospin. A 6 casos no se les realizó conteo diferencial, 4 por exceso de células escamosas y 2 casos en la técnica convencional por no completar 300 células. Se encontró degeneración marcada de las células epiteliales en la técnica convencional con diferencia significativa en el tiempo de lectura con un valor p (0,0000).ConclusionesSe obtuvo diferencia significativa en los tiempos de lectura de cada técnica. Este fue mayor en la técnica convencional que en la técnica con cytospin, con extendidos de mejor calidad en la técnica por cytospin...
The cytological interpretation of bronchoalveolar lavage (BAL) specimen is currently performed using conventional cytology and cytospin preparations. The latter features concentrated preparations in a 6-mm area for sample visualisation and reduced reading time, with no deterioration in quality.Objective: To determine the differences in reading time and quality, between the conventional technique and the cytospin technique.Study designA cross-sectional study was conducted on BAL specimens that were processed using the conventional technique and the cytospin technique. Reading time for diagnosis between the 2 techniques was compared. Quality was assessed taking into account, cell preservation and inflammatory cells in smears. The difference in time was calculated using the Wilcoxon test.Results: Eighty (80) BAL slides were examined, 40 by the conventional technique and 40 by the cytospin technique. A differential count was not performed in 6 cases, in 4 due to excessive number of squamous cells and in 2 cases, processed by the conventional technique, due to exhibiting less than 300 cells. A marked degeneration of epithelial cells was observed using the conventional technique, showing a significant difference in reading time (P<.001).ConclusionsA significant difference was found between reading times of the 2 techniques, which was longer when using the conventional technique. Better quality smears were observed when using the cytospin technique...
Asunto(s)
Humanos , Enfermedades Pulmonares Intersticiales , Lavado Broncoalveolar , Neumología , Técnicas CitológicasRESUMEN
A new species of the Andean-Patagonian Liolaemus elongatus clade is described. Liolaemus crandalli sp. nov. differs from other members of its clade by a combination of coloration characters, scale counts and genetic traits. Liolaemus crandalli sp. nov. is known only from an isolated volcanic mountain in northwestern Patagonia above 1500 m.a.s.l. unconnected with other habitat suitable for species of the Liolaemus elongatus clade.
Asunto(s)
Ecosistema , Lagartos/clasificación , Lagartos/genética , Filogenia , Distribución Animal , Animales , Argentina , Lagartos/anatomía & histología , Especificidad de la EspecieRESUMEN
La criptocococis meníngea es la infección fúngica más frecuente del sistema nervioso central; generalmente se presenta en pacientes VIH seropositivos, aunque existe una proporción considerable de paciente VIH seronegativos, siendo en estos casos su presentación más agresiva. Esta infección tiene manifestaciones neurológicas variables que son secundarias al aumento de la presión intracraneal. La ventriculitis con hidrocefalia secundaria es una de las complicaciones de mayor morbi-mortalidad especialmente en pacientes VIH seronegativos. Presentamos un reporte de caso de criptocococis meníngea género Neoformans subtipo Grubbi con ventriculitis e hidrocefalia secundaria en paciente VIH seronegativo confirmado por histopatología.
Meningeal criptocococis is the most common fungal infection of the central nervous system, occuring in HIV seropositive patients, although there is a significant proportion of HIV seronegative patients, in whom the presentation is more aggresive. This infection has variable clinical manifestations secondary to increased intracranial pressure. Ventriculitis with hydrocephalus is one of the complications with the poorest outcome and mortality especially in HIV seronegative patients. We present a case report of meningeal criptocococis Neoformans subtype Grubbi with ventriculitis and secondary hydrocephalus in HIV seronegative patient confirmed by histopathology.