Assessing lead and cadmium tolerance of Chenopodium ambrosioides during micropropagation: an in-depth qualitative and quantitative analysis.

The tolerance of Chenopodium ambrosioides to some heavy metals under in vitro environment was thoroughly investigated. A micropropagation protocol was developed to facilitate the mass production of plants and to identify metals-tolerant species for potential use in the restoration of polluted areas. Nodal explants exhibited callus formation when treated with N6-benzyladenin (BA) (1.5 mg/l) and a combination of BA/α-naphthalene acetic acid (NAA) at concentrations of 1.5/1.0 mg/l on the Murashige and Skoog (MS) medium. The optimal shoot formation was achieved with the callus grown on a medium enriched with 1.5/1.0 mg/l BA/NAA, resulting in an impressive number (21.89) and length (11.79 cm) of shoots. The in vitro shoots were rooted using NAA (1.0 and 1.5 mg/l) and were acclimatized in pots with 71% survival rate. After standardizing micropropagation protocol, the in vitro shoots were subjected to various doses of lead nitrate (Pb(NO3)2 and cadmium chloride (CdCl2). Pb(NO3)2 and CdCl2 in the media let to a reduction in shoot multiplication, decreasing from 18.73 in the control group to 11.31 for Pb(NO3)2 and 13.89 for CdCl2 containing medium. However, Pb(NO3)2 and CdCl2 promoted shoot length from 5.61 in the control to 9.86 on Pb(NO3)2 and 12.51 on CdCl2 containing medium. In the case of Pb(NO3)2 treated shoots, the growth tolerance index (GTI) ranged from117.64% to 194.11%, whereas for CdCl2 treated shoots, the GTI ranged from 188.23% to 264.70%. Shoots treated with high level of Pb(NO3)2induced reddish-purple shoots, while a low level of Pb(NO3)2 induced shoots displayed both green and reddish-purple colors in the same explants. In CdCl2 treated culture, the toxic effects were narrow leaf lamina, elongated petiole and a dark reddish purple coloration. These findings highlight the remarkable potential of C. ambrosioides to maintain growth and organogenesis even in the presence Pb(NO3)2 and CdCl2 on the MS medium, indicating a high degree of metal tolerance.

Reduciendo la Mortalidad Materna en zonas de conflicto: Experiencia quirúrgica-anestésica en el Hospital Boost, Afganistán / Reducing maternal mortality in conflict areas: Surgical-anesthetic experience in Boost Hospital - Afghanistan

Introduction: Helmand province, whose capital is Lashkar-Gah, is one of the most volatile provinces affected by the conflict in Afghanistan. Doctors without Borders began to work in Boost Hospital in 2009. Method: Retrospective review of surgical procedures at the Doctors without Borders Operational Center in Brussels, February 11, 2010 to September 30, 2012. Results: 5719 surgeries were performed on 4334 patients. 47% were emergency interventions and 75% were first interventions. 39.7% (n = 1721) of patients were female. In the Gyneco-obstetric (G) area, the average age was 31.3 years. 848 Cesarean operations (76%) were performed and 95% of these were urgent. Of these patients (n = 598) 64% were at ASA II. Spinal anesthesia (SA) was administered in 44.4% (n = 415) of patients, followed by general anesthesia without intubation (GA-) in 39.3% (n = 367). In 16% (n = 151), general anesthesia was administered with endotracheal intubation (GA+). Transoperatory mortality was 0.8% (n=7). Conclusions: The Boost Hospital offers a surgical service of relevance in the south of Afghanistan. This hospital is supported by Doctors without Borders (MSF) and has helped to reduce the maternal mortality in that region through the provision of quality care in obstetric emergencies. By applying health standards, and medical teams and material, MSF has helped the Afghan population, particularly gestating mothers, to improve its health while achieving a transoperatory mortality in Cesareans of <1%.

Introducción: Helmand cuya capital es Lashkar-Gah es una de las provincias más volátiles entre las más afectadas por conflictos en Afganistán. Médicos sin Fronteras empezó a trabajar en el Hospital Boost en 2009. Método: Revisión retrospectiva de procedimientos quirúrgicos en Médicos sin Fronteras-Centro Operacional de Bruselas del 11 de febrero de 2010 al 30 de septiembre de 2012. Resultados: Se realizaron 5719 cirugías a 4334 pacientes, siendo de urgencia un 47% y primera intervención un 75%. 39.7% (n = 1721) de pacientes fueron de género femenino. En relación al área Gineco-obstétrica (G), la edad media fue de 31.3 años. Se realizaron 848 cesáreas (76%) de las cuales el 95% fueron urgentes. De estas pacientes (n = 598) el 64% era ASA II. En cuanto al tipo de anestesia, se administró Anestesia espinal (SA) en un 44.4% (n = 415), seguido de anestesia general sin intubación (GA-) en un 39.3% (n = 367), y en un 16% (n = 151) se administró anestesia general con intubación endotraqueal (GA+); con una mortalidad transoperatoria de 0.8% (n = 7). Conclusiones: El Hospital Boost brinda un servicio quirúrgico de relevancia en el sur de Afganistán. Dicho hospital es apoyado por Médicos sin Fronteras (MSF), lo cual ha ayudado a reducir la mortalidad materna en esa región con la provisión de asistencia de calidad en emergencias obstétricas. Con la aplicación de estándares de salud, equipo, y material médico, MSF ha logrado que la población afgana, y particularmente las gestantes, mejore su salud, logrando una mortalidad transoperatoria de intervenciones por Cesáreas de < 1%.