Preliminary assessment of seed heteromorfism as an adaptive strategy of Colobanthus quitensis under saline conditions.

Colobanthus quitensis is known for enduring extreme conditions, such as high salinity in Antarctica, making it an excellent model for studying environmental stress. In plant families, variations in seed color heteromorphism have been linked to various germination under stress conditions. Preliminary laboratory observations indicated that dark brown seeds of C.

Eco-friendly methoximation of aromatic aldehydes and ketones using MnCl.4HO as an easily accessible and efficient catalyst.

Methoximes are important as a class of intermediates and products, among fine chemicals and specialties. The development of a new, facile and efficient method for their synthesis is reported. The methoximes were properly accessed from the corresponding aromatic aldehydes and ketones in good to excellent yields, under mild conditions, employing the inexpensive and environmentally friendly MnCl.

Impact of land use history on the arbuscular mycorrhizal fungal diversity in arid soils of Argentinean farming fields.

Arbuscular mycorrhizal fungi (AMF) are a key soil functional group, with an important potential to increase crop productivity and sustainable agriculture including food security. However, there is clear evidence that land uses, crop rotations and soil features affect the AMF diversity and their community functioning in many agroecosystems. So far, the information related to AMF biodiversity in ecosystems like the Argentinean Puna, an arid high plateau where plants experience high abiotic stresses, is still scarce.

Increasing the digital repository of DNA barcoding sequences of sand flies (Psychodidae: Phlebotominae).

Sand fly identification is complex because it depends on the expertise of the taxonomist. The females show subtle morphological differences and the occurrence of the species complexes are usual in this taxon. Therefore, a fragment of the cytochrome c oxidase subunit I (COI) gene is used for taxon barcoding to resolve this kind of problem.

Effect of salinity on locomotor performance and thermal extremes of metamorphic Andean Toads (Rhinella spinulosa) from Monte Desert, Argentina.

Rhinella spinulosa is distributed from Peru to Argentina (from 1200 to 5000 m elevation), inhabiting arid mountain valleys of the Andes, characterized by salty soils. The variations in soil salinity, caused by high evapotranspiration of water, can create an osmotic constraint and high thermal oscillations for metamorphsed Andean toad (R. spinulosa), affecting their thermoregulation and extreme thermal tolerances.

Seasonal distribution of Phlebotomine sandfly in a vulnerable area for tegumentary leishmaniasis transmission in Córdoba, Argentina.

Thirty-seven sandfly species are listed for Argentina distributed in 14 provinces and Leishmaniasis cases extend from the north of the country to Unquillo City (Córdoba Province), but potential vectors are found further to the south. This is the first study on diversity, spatial and temporal distribution of sandflies on the outskirts of the temperate Córdoba City, and the factors that influence their presence. Migonemyia migonei, record here for Córdoba City for the first time, and the Evandromyia cortelezzii-sallesi Complex was found, also Ev.

Knowledge, beliefs and attitudes report on patient care and safety in undergraduate students: validating the modified APSQ-III questionnaire.

Introduction: Patient safety aims to achieve healthcare free of damage. The World Health Organization indicates that this objective is achieved through communication, analysis, and prevention of adverse events in patients. Organizational culture has been identified as one of the main factors for interventions aimed to reduce medical errors; and an essential component of safety culture is the attitude of health professionals towards medical error.

Thermal ecology of the post-metamorphic Andean toad (Rhinella spinulosa) at elevation in the monte desert, Argentina.

Rhinella spinulosa is an anuran toad species distributed latitudinal and altitudinal (1200-5000m) from Peru to Argentina, inhabiting mountain valleys in the Andes. Considering the broad range of habitats where they live, it is important to understand the thermal physiological mechanisms, thermal tolerances and physiological adaptations for surviving in rigorous environments. We investigated the thermal parameters (field body temperature, selected body temperature, locomotor performance in field and laboratory conditions, and thermal extremes) during diurnal activity for a population of juvenile, post-metamorphosed toads (Rhinella spinulosa) from the Monte Desert of San Juan, Argentina.

Host association of Spodoptera frugiperda (Lepidoptera: Noctuidae) corn and rice strains in Argentina, Brazil, and Paraguay.

Spodoptera frugiperda (J.E. Smith) is composed of two genetically distinct strains, the so-called corn strain and the rice strain.

Isolation of a strawberry gene fragment encoding an actin depolymerizing factor-like protein from genotypes resistant to Colletotrichum acutatum.

Actin depolymerizing factors (ADFs) have been recently implicated in plant defense against pathogenic fungi, associated with the cytoskeletal rearrangements that contribute to establish an effective barrier against fungal ingress. In this work, we identified a DNA fragment corresponding to a part of a gene predicted to encode an ADF-like protein in genotypes of Fragaria ananassa resistant to the fungus Colletotrichum acutatum. Bulked segregant analysis combined with AFLP was used to identify polymorphisms linked to resistance in hybrids derived from the cross between the resistant cultivar 'Sweet Charlie' and the susceptible cultivar 'Pájaro'.

[Allergic fungal rhinosinusitis caused by Curvularia sp.].

Allergic fungal rhinosinusitis is a benign and non-invasive sinusal disease related to a hypersensitivity reaction to fungal antigens. This process can cause tissue edema with chronic inflammatory disturbances of the respiratory mucosa. We present the case of a 17 year-old immunocompetent male, with history of seasonal allergic rhinosinusitis, nasal polyps and previous surgery for mucocele of the frontal sinus.

Evaluation of two different potency tests for leptospirosis vaccine vax-SPIRAL.

Two different potency tests were evaluated, consisting in one-dilution used to determine 50% lethal dose (LD50) and four--dilution used to calculate 50% effective dose (ED50), respectively. Our experience has led to propose the four-dilution test for routine lot releasing.

[Abdominal aorta injury secondary to closed trauma].

Traumatic injury of the abdominal aorta with total interruption of blood flow is uncommon. When there is total obstruction of the artery, the clinical picture is dramatic. The most frequent mechanism is compression due to the safety belt during a car accident.

First Report of Colletotrichum acutatum on Strawberry in Northwestern Argentina.

Isolates were obtained from strawberry tissue with anthracnose symptoms from several locations near Tucumán, Argentina. Isolates were characterized using several criteria. Isolates produced fusiform conidia, tapered to a point at both ends, and averaged 13.

Inflammatory arthritic process, iridocyclitis and immune response to articular and ocular antigens in Wistar rats injected with T. gondii trophozoites.

The present study deals with the potential role of T. gondii in inducing an arthritic inflammatory process. Wistar rats were injected subcutaneously (sc) into the right footpad with viable T.

Single dose study of the bioequivalence of two sustained-release theophylline formulations.

The relative bioavailability of theophylline (CAS 58-55-9) was evaluated after a single dose administration of two sustained-release theophylline tablet formulations: Controfilina-200 as test preparation (test) and a commonly used reference preparation (reference). The design of the study was crossover in twelve healthy volunteers, with a series of two experimental sessions. The two sessions were carried out at weekly intervals.

Chagas' disease: decreased resistance to Trypanosoma cruzi acquired infection in offspring of infected mice.

The course of Trypanosoma cruzi infection was studied in an experimental model, using the offspring of mice that were chronically infected with T. cruzi. When infected two months after birth, a higher mortality rate in heavily parasitized mice occurred in these offspring than in controls born to uninfected mothers.