Afforestation and climate mitigation: lessons from Chile.

The Chilean Climate Change Law excludes tree monocultures as a solution to the climate crisis, offering an opportunity for resilience and climate mitigation in Latin America. The Chilean experience with mega-fires in extensive, homogeneous forest plantations provides important lessons that could inform climate policies in other countries.

Microbial degradation of organophosphorus pesticides using whole cells and enzyme extracts.

The use of microbial phosphotriesterases in the degradation of organophosphorus compounds employed as pesticides, plasticizers and petroleum additives is a sustainable alternative for bioremediation of water and soils, decontamination of particular foods and as poisoning antidote. Whole cells of six wild type microorganisms-Streptomyces phaeochromogenes, Streptomyces setonii, Nocardia corynebacterioides, Nocardia asteroides and two Arthrobacter oxydans-selected in our lab as phosphotriesterase sources, were further tested as biocatalysts in the hydrolysis of paraoxon, methyl paraoxon, methyl parathion, coroxon, coumaphos, dichlorvos and chlorpyrifos, highlighting 98% conversion of chlorpyrifos into its hydrolysis products using whole cells of S. phaeochromogenes at pH 8 and 40 °C. Immobilized whole cells and enzyme extracts were also assessed, observing as a general trend, that there is no significant variation in hydrolytic activity between them. These results suggest that according to the circumstances, immobilized whole cells (avoiding cellular disruption and centrifugation) or enzyme extracts (which can be handled more easily) could be used.

Surgery in a Patient with Haemophilia A and Lymphoma.

An increased incidence of haematologic malignancies and other cancer types among patients with haemophilia compared with matched controls has been reported in several longitudinal studies. Tumours initially misdiagnosed as haematomas and conversely haematomas mistaken for tumours have been reported. Here, we describe the case of a 43-year-old man with severe haemophilia A and a diffuse large B-cell lymphoma, originally diagnosed as a haematoma, who underwent a splenectomy and several associated surgeries as part of his lymphoma treatment. Perioperative treatment with octanate® (human coagulation factor VIII) enabled the successful performance of all surgical interventions required in the context of lymphoma treatment. Nevertheless, differential diagnosis of posttraumatic haematoma in patients with haemophilia should include the consideration of malignancy.

Encephalopathia saturnina: report of a case

The purpose of this paper is to call the attention of the medical profession to the ever-increasing industrial diseases in the Islands. A case of encephalopathia saturnina is here to reported, which, to the best of our knowledge, seems to be the first of its kind in the Philippines. The case comes from one of the printing establishments in Manila. The importance of a careful history especially in relation to occupational hazards is emphasizedFor those who have not had the occasion to read about lead poisoning, points such as lead absorption and excretion, symptoms, industries in the Islands where such a disease is liable to occur, its prevention and treatment, have been briefly touched. For a more thorough understanding of the subject, however, the reader is referred to the literature.(Summary)

Gasometria en el recien nacido sano en la ciudad de Mexico; estudio comparativo entre sangre arterial y sangre arterializada. / Blood gas analysis in healthy newborn infants in Mexico; comparative study of blood and arterialized blood

Se practico un estudio comparativo de la gasometria en 104 ninos recien nacidos normales en la ciudad de Mexico entre sangre arterial y sangre arterializada. La prueba de "t" se aplico para determinar la significancia de las diferencias.No se encontro ninguna diferencia significativa con respecto a sexos. En relacion con los dos tipos de muestras, si hubo diferencia significativa a nivel del PO2, porcentaje de saturacion de oxigeno, pH, exceso de base, bicarbonato estandar y CO2 total. El promedio del porcentaje de saturacion de oxigeno y del PO2 se encontraron mas altos en la sangre arterial (91.3% y 57.3 mm Hg) en comparacion con la sangre arterializada (81.9% y 43 mm Hg). El promedio del exceso de base y del pH se encontraron mas bajos en la sangre arterial (-10 y 7.28) en comparacion con la sangre arterializada (-8 y 7.31). El estudio demostro diferencias entre ambas muestras y nos permitio obtener valores de referencia en ninos recien nacidos normales para poderlos aplicar comparativamente en ninos con patologia respiratoria

Septicemias nosocomiales. Consideraciones generales y presentacion de 20 casos. / Nosocomial septicemias. General considerations and report of 20 cases

En este trabajo se hace hincapie en la importancia de las infecciones intrahospitalarias y se hacen consideraciones sobre los factores que influyen en las genesis de las septicemias. Se analizan 20 casos de septicemia de adquisicion intrahospitalaria tratando de correlacionar diferentes factores intrinsecos y extrinsecos del huesped con la causa de la septicemia se inicio despues de las 72 horas de estancia hospitalaria. Predominaron los germenes gramnegativos, en especial Klebsiella y Pseudomonas. La causa mas comun de ingresso fue la gastroenteritis y la existencia de desnutricion proteinocalorica avanzada.Predomino en los primeros meses de la vida. Todos estuvieron sometidos a diversas maniobras medicoquirurgicas, entre ellas laparotomias, venodisecciones, dialisis peritoneal y drogas inmunodepresoras. La letalidad en este estudio fue de 75%. Se encontro que la frecuencia de septicemias nosocomiales en el Hospital de Pediatria del Centro Medico Nacional del IMSS varia entre el 12.7% y el 14.0% de las infecciones intrahospitalarias