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1.
Animals (Basel) ; 14(5)2024 Feb 20.
Article in English | MEDLINE | ID: mdl-38473047

ABSTRACT

The Franciscana (also known as the La Plata River Dolphin) is a small dolphin that lives in the coastal waters of Brazil, Uruguay, and Argentina. This species is considered the most endangered marine mammal in the western South Atlantic Ocean. Anatomic dissection of the digestive system of 19 animals of different ages, including 2 neonates, 12 juveniles, and 5 adults, was performed. Parameters related to length, breadth, weight, and diameter of the digestive viscera were considered in each case. Our results show that the Franciscana dolphin presents differential characteristics in relation to several parts of the digestive system, including, specifically, the tongue, the teeth, the stomach, and the small intestine. Thus, this paper add precious information to the actual knowledge of this vulnerable marine mammal species in order to improve conservation efforts.

2.
ACS Omega ; 9(15): 16992-17001, 2024 Apr 16.
Article in English | MEDLINE | ID: mdl-38645358

ABSTRACT

Flavor esters are organic compounds widely used in the food industry to enhance the aroma and taste of products. However, most chemical processes for the production of these flavoring compounds use toxic organic solvents. Some organic solvents derived from petroleum can leave behind residual traces in food products, which may raise concerns about potential health risks and contamination. In this study, we employ Eversa Transform 2.0, a commercial lipase derived from the lipase from Thermomyces lanuginosus, to produce geranyl butyrate in aqueous media. The chemical process was optimized using the Taguchi method, and a conversion of 93% was obtained at the optimal reaction conditions of: 1:5 molar ratio (v/v), 15% biocatalyst load (w/w), at 50 °C, in 6 h. Classic (molecular dynamics) and quantum (density functional theory) simulations unveiled amino acid residues involved in the stabilization of the enzyme-substrate complex. Detailed QM/MM mechanistic studies identified the nucleophilic attack of the deacylation reaction as the rate-limiting step of the entire mechanism, which has a free energy barrier of 14.0 kcal/mol.

3.
Rev. peru. med. exp. salud publica ; 37(2): 253-258, abr.-jun. 2020. tab, graf
Article in Spanish | LILACS | ID: biblio-1127140

ABSTRACT

RESUMEN Con el objetivo de describir las manifestaciones de pacientes con enfermedad por coronavirus 2019 (COVID-19), se evaluaron variables sociodemográficas, antecedentes, manifestaciones clínicas y radiológicas, tratamientos y evolución en pacientes que ingresaron por emergencia, del 6 al 25 de marzo de 2020, al Hospital Nacional Edgardo Rebagliati Martins en Lima. Se registraron 17 pacientes: el 76% eran varones, edad promedio de 53,5 años (rango de 25 a 94); el 23,5% había regresado del extranjero; 41,2% referido de otros establecimientos de salud; 41,2% ingresó a ventilación mecánica; falleció el 29,4% (5 pacientes). Los factores de riesgo detectados fueron adulto mayor, tener hipertensión arterial y obesidad; los principales síntomas, tos, fiebre y disnea; los hallazgos de laboratorio frecuentes, proteína C reactiva elevada y linfopenia; la presentación radiológica predominante, el infiltrado pulmonar intersticial bilateral. Se reporta una primera experiencia en el manejo de pacientes con diagnóstico de la COVID-19 grave en el Perú.


ABSTRACT In order to describe manifestations from patients with coronavirus disease 2019 (COVID-19), sociodemographic variables such as, previous medical history, clinical and radiological manifestations, treatments and evolution of patients were evaluated. This took place from March 6th to 25th, 2020, in the "Edgardo Rebagliati Martins" National Hospital in Lima. Seventeen patients were registered: 76% were male, with an average age of 53.5 years (range 25-94); 23.5% had returned from abroad; 41.2% were referred from other health facilities; 41.2% were admitted to mechanical ventilation; 29.4% (5 patients) died. The risk factors detected were: advanced age, arterial hypertension and obesity. The main symptoms detected were: cough, fever and dyspnea. Frequent laboratory findings were: elevated C-reactive protein and lymphopenia. The predominant radiological presentation was bilateral interstitial lung infiltrate. A first experience in the management of patients diagnosed with severe COVID-19 in Peru is reported.


Subject(s)
Humans , Male , Female , Patients , Peru , Pneumonia, Viral/physiopathology , Respiration, Artificial , Coronavirus Infections/physiopathology , COVID-19 , Hospitalization , Pneumonia, Viral , Pneumonia, Viral/mortality , Pneumonia, Viral/therapy , Severity of Illness Index , Retrospective Studies , Risk Factors , Coronavirus Infections , Coronavirus Infections/mortality , Coronavirus Infections/therapy , Cough/etiology , Cough/epidemiology , Severe Acute Respiratory Syndrome , Dyspnea/etiology , Dyspnea/epidemiology , Emergency Medical Services , Pandemics , Fever/etiology , Fever/epidemiology
4.
Rev. argent. ultrason ; 11(1): 28-30, mar. 2012. ilus
Article in Spanish | LILACS | ID: lil-653181

ABSTRACT

Se presenta el caso de una paciente femenina de 35 años de edad, portadora de un tumor adrenal izquierdo diagnosticado durante un estudio ecográfico. Las características morfológicas y los parámetros clínicos y de laboratorio sugirieron la existencia de un feocromocitoma. La paciente fue intervenida quirúrgicamente y la cirugía confirmó dicho diagnóstico.


Subject(s)
Humans , Adult , Female , Diagnostic Techniques and Procedures , Pheochromocytoma/complications , Pheochromocytoma/diagnosis , Pheochromocytoma/therapy , Pheochromocytoma , Ultrasonography
5.
Rev. argent. ultrason ; 10(1): 17-18, mar. 2011. ilus
Article in Spanish | LILACS | ID: lil-585495

ABSTRACT

Para determinar cuál es el lado derecho e izquierdo del feto, teniendo como referencia la presentación fetal y la ubicación del dorso, se presentan por lo general algunas complicaciones y dificultades para los operadores ecográficos. Se describen algunas normas, ideadas para simplificar esta tarea...


Subject(s)
Fetus/anatomy & histology , Ultrasonography, Prenatal/instrumentation , Ultrasonography, Prenatal/methods , Ultrasonography, Prenatal/standards
6.
Rev. argent. ultrason ; 8(4): 189-193, dic. 2009. ilus
Article in Spanish | LILACS | ID: lil-539203

ABSTRACT

Principales características de esta patología, de la que se describen también su etiología y tratamiento. La realización de una ecografía transvaginal permite identificar una serie de signos ecográficos para un diagnóstico presuntivo, por lo que se muestra una tabla con las características distintivas entre pólipos endometriales de la peri y postmenopausia.


Subject(s)
Humans , Female , Endometrium/pathology , Endometrium , Polyps/classification , Polyps/diagnosis , Polyps , Ultrasonography
7.
Rev. argent. ultrason ; 8(2): 72-74, jun. 2009. ilus
Article in Spanish | LILACS | ID: lil-532805

ABSTRACT

La malformación arteriovenosa es una entidad rara y poco conocida. Se presenta un caso que fue diagnosticado con Doppler color a través de una ecografía transvaginal y tratado con embolización selectiva, que es un método mini-invasivo y permite conservar la capacidad reproductiva de la paciente.


Subject(s)
Humans , Pregnancy , Female , Embolization, Therapeutic/instrumentation , Embolization, Therapeutic , Arteriovenous Malformations/diagnosis , Arteriovenous Malformations , Ultrasonography
8.
Rev. argent. ultrason ; 7(3): 169-171, sept. 2008. ilus
Article in Spanish | LILACS | ID: lil-506132

ABSTRACT

Se reportan dos casos de embriones con colecciones intratorácicas. Se describen los hallazgos y su evolución. Se revisa la escasa bibliografía disponible y se presentan los resultados de otras cortas series de casos similares. La poca casuística registrada y las evoluciones disímiles impiden establecer un pronóstico...


Subject(s)
Humans , Female , Pregnancy , Adult , Heart Diseases/diagnosis , Heart Diseases , Fetal Diseases/diagnosis , Fetal Diseases , Ultrasonography, Prenatal/instrumentation , Ultrasonography, Prenatal
9.
Rev. argent. ultrason ; 7(1): 53-56, mar. 2008. ilus
Article in Spanish | LILACS | ID: lil-506151

ABSTRACT

Clasificación de los quistes, etiología, diagnóstico y tratamiento. En el caso que se presenta se diagnosticó un quiste Tipo Ic en la semana 29 de gestación, y se confirmó el diagnóstico luego de una cesárea de urgencia en la semana 40.


Subject(s)
Female , Pregnancy , Humans , Choledochal Cyst/classification , Choledochal Cyst/diagnosis , Choledochal Cyst/etiology , Choledochal Cyst , Ultrasonography, Prenatal
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