Plagas que atacan el follaje

The biology, damage caused, and control (cultural, chemical, and var. resistance) of the following insect pests attacking bean plant foliage are described: chrysomelids, Empoasca kraemeri, Epilachna varivestis, Trichoplusia ni, Bemisia tabaci, aphids, Tetranychus spp. Polyphagotarsonemus latus, Agromyza spp., and Hemichalepus spp. (CIAT)Se describen la biologia, el dano que ocasionan y el control (cultural, quimico y resistencia var.) de los insectos plaga que atacan el follaje de las plantas de frijol: crisomelidos, Empoasca kraemeri, Epilachna varivestis, Trichoplusia ni, Bemisia tabaci, Afidos, Tetranychus spp., Polyphagotarsonemus latus, Agromyza spp. y Hemichalepus spp. (CIAT

Plagas que atacan las vainas

The biology of pod-attacking insect pests of beans (Apion godmani, Epinotia aporema, Maruca testulalis, and Heliothis spp.) is briefly described. Cultural and chemical control measures are indicated. Some biological control measures are indicated for the case of Heliothis. (CIAT)Se describen brevemente la biologia de los insectos plaga (Apion godmani, Epinotia aporema, Maruca testulalis, Heliothis spp.) que atacan las vainas del frijol. Se indican medidas de control cultural y quimico. En el caso de Heliothis, se indican algunas medidas de control biologico. (CIAT

Another step toward DNA selective targeting: NiII and CuII complexes of a Schiff base ligand able to bind gene promoter G-quadruplexes

DNA G-rich sequences are able to form four-stranded structures organized in stacked guanine tetrads. These structures, called G-quadruplexes, were found to have an important role in the regulation of oncogenes expression and became, for such a reason, appealing targets for anticancer drugs. Aiming at finding selective G-quadruplex binders, we have designed, synthesized and characterized a new water soluble Salen-like Schiff base ligand and its NiII and CuII metal complexes. UV-Vis, circular dichroism and FRET measurements indicated that the nickel complex can stabilize oncogene promoter G-quadruplexes with high selectivity, presenting no interactions with duplex DNA at all. The same compound exhibited dose-dependent cytotoxic activity in MCF-7 breast cancer cells when combined with lipofectamine as lipophilic carrier

The impact of delirium on the prediction of in-hospital mortality in intensive care patients

Introduction: predictive models, such as acute physiology and chronic health evaluation II (APACHE-II), are widely used in intensive care units (ICUs) to estimate mortality. Although the presence of delirium is associated with a higher mortality in ICU patients, delirium is not part of the APACHE-II model. The aim of the current study was to evaluate whether delirium, present within 24 hours after ICU admission, improves the predictive value of the APACHE-II score.Methods: in a prospective cohort study 2116 adult patients admitted between February 2008 and February 2009 were screened for delirium with the confusion assessment method-ICU (CAM-ICU). Exclusion criteria were sustained coma and unable to understand Dutch. Logistic regression analysis was used to estimate the predicted probabilities in the model with and without delirium. Calibration plots and the Hosmer-Lemeshow test (HL-test) were used to assess calibration. The discriminatory power of the models was analyzed by the area under the receiver operating characteristics curve (AUC) and AUCs were compared using the Z-test.Results: 1740 patients met the inclusion criteria, of which 332 (19%) were delirious at the time of ICU admission or within 24 hours after admission. Delirium was associated with in-hospital mortality in unadjusted models, odds ratio (OR): 3.22 (95% confidence interval [CI]: 2.23 - 4.66). The OR between the APACHE-II and in-hospital mortality was 1.15 (95% CI 1.12 - 1.19) per point. The predictive accuracy of the APACHE-II did not improve after adding delirium, both in the total group as well as in the subgroup without cardiac surgery patients. The AUC of the APACHE model without delirium was 0.77 (0.73 - 0.81) and 0.78 (0.74 - 0.82) when delirium was added to the model. The z-value was 0.92 indicating no improvement in discriminative power, and the HL-test and calibration plots indicated no improvement in calibration.Conclusions: although delirium is a significant predictor of mortality in ICU patients, adding delirium as an additional variable to the APACHE-II model does not result in an improvement in its predictive estimate

Inter-rater reliability of the EPUAP pressure ulcer classification system using photographs

Background. Many classification systems for grading pressure ulcers are discussed in the literature. Correct identification and classification of a pressure ulcer is important for accurate reporting of the magnitude of the problem, and for timely prevention. The reliability of pressure ulcer classification systems has rarely been tested. Aims and objectives. The purpose of this paper is to examine the inter-rater reliability of classifying pressure ulcers according to the European Pressure Ulcer Advisory Panel classification system when using pressure ulcer photographs.Design. Survey was among pressure ulcer experts.Methods. Fifty-six photographs were presented to 44 pressure ulcer experts. The experts classified the lesions as normal skin, blanchable erythema, pressure ulcer (four grades) or incontinence lesion. Inter-rater reliability was calculated.Results. The multirater-Kappa for the entire group of experts was 0.80 (P < 0.001).Various groups of experts obtained comparable results. Differences in classifications are mainly limited to 1 degree of difference. Incontinence lesions are most often confused with grade 2 (blisters) and grade 3 pressure ulcers (superficial pressure ulcers).Conclusions. The inter-rater reliability of the European Pressure Ulcer Advisory Panel classification appears to be good for the assessment of photographs by experts. The difference between an incontinence lesion and a blister or a superficial pressure ulcer does not always seem clear.Relevance to clinical practice. The ability to determine correctly whether a lesion is a pressure ulcer lesion is important to assess the effectiveness of preventive measures. In addition, the ability to make a correct distinction between pressure ulcers and incontinence lesions is important as they require different preventive measures. A faulty classification leads to mistaken measures and negative results. Photographs can be used as a practice instrument to learn to discern pressure ulcers from incontinence lesions and to get to know the different grades of pressure ulcers. The Pressure Ulcer Classification software package has been developed to facilitate learning

Landomycins as glutathione-depleting agents and natural fluorescent probes for cellular Michael adduct-dependent quinone metabolism

Landomycins are angucyclines with promising antineoplastic activity produced by Streptomyces bacteria. The aglycone landomycinone is the distinctive core, while the oligosaccharide chain differs within derivatives. Herein, we report that landomycins spontaneously form Michael adducts with biothiols, including reduced cysteine and glutathione, both cell-free or intracellularly involving the benz[a]anthraquinone moiety of landomycinone. While landomycins generally do not display emissive properties, the respective Michael adducts exerted intense blue fluorescence in a glycosidic chain-dependent manner. This allowed label-free tracking of the short-lived nature of the mono-SH-adduct followed by oxygen-dependent evolution with addition of another SH-group. Accordingly, hypoxia distinctly stabilized the fluorescent mono-adduct. While extracellular adduct formation completely blocked the cytotoxic activity of landomycins, intracellularly it led to massively decreased reduced glutathione levels. Accordingly, landomycin E strongly synergized with glutathione-depleting agents like menadione but exerted reduced activity under hypoxia. Summarizing, landomycins represent natural glutathione-depleting agents and fluorescence probes for intracellular anthraquinone-based angucycline metabolism

Riqueza del complejo chisa (coleoptera: melolonthidae) en cuatro agroecosistemas del cauca, colombia

La composición y variación de la riqueza del complejo de larvas Melolonthidae se examinó en cuatro circunstancias agroecológicas en los municipios de Caldono y Buenos Aires, Cauca (1400 a 1500 m.s.n.m, 21,5ºC. y 2000 mm/año de precipitación promedio). Quincenalmente, durante un año, se visitaron parcelas de media hectárea de yuca, pastizal, cafetal y bosque, en cada parcela y ocasión se realizaron 10 muestreos ( 1m2 por 15 cm de profundidad). Se colectaron 10.261 larvas pertenecientes a 32 especies y 12 géneros de Melolonthidae, así: Phyllophaga, Plectris, Astaena, Macrodactylus, Ceraspis, Barybas, Isonychus, Anomala Callistethus, Strigoderma, Leucothyreus, Cyclocephala. La riqueza de especies presentó variaciones estadísticamente significativas entre localidades (F=87.24 p =2.72-18), muestreos (F=22.29 p =5.18-13), parcelas (F= 23.39 p=1.40-13) así como entre la mayoría de interacciones. Los promedios de riqueza fueron: yuca (4.5 ), pastizal (3.6), café (2.1) y bosque (2.2), cada uno con grandes fluctuaciones que hicieron la diferencia. Se discuten las curvas de isodensidades de cada parcela y sus implicaciones en el programa de manejo. Abstract Richness of the white-grub complex (Coleoptera: Melolonthidae) in agroecosystems of the Cauca province, Colombia. The composition and variation in the richness of the complex of rhizophagous Melolonthidae larvae was examinated in four agroecological zones in the Municipality of Caldono (1400-1500 m, 21.5ºC, average rainfall 2000 mm/yr) with complementary surveys in the neighbouring site of Buenos Aires, Cauca. Half-hectare plots (cassava, pastures, coffee and wooded areas) were selected and visited every 15 days (total of 15 visits per plot), and a total of 10 samples were taken (1 m2 by 15 cm deep). In total, 10,261 larvae of 32 species were collected: Phyllophaga, Plectris, Astaena, Macrodactylus, Ceraspis, Barybas, Isonychus, Anomala Callistethus, Strigoderma, Leucothyreus, Cyclocephala. The richness of species varied significantly among sites (F=87.24; p =2.72-18), samples (F=22.29; p=5.18-13), plots (F=23.39; p=1.40-13). In most cases, the average rates for richness were: pastures (3.6), cassava (4.5), coffee (2.11) and wooded areas (2.2). They all had substantial fluctuations, which accounts for the differences. The isodensity curves for each plot are presented and discussed. Key words: Melolonthidae, rhizophagous, larvae, Coleoptera. Cauca, Colombi

Qualitative interviews results from heart failure survey respondents on the interaction between symptoms and burden of self-care work.

AIMS AND OBJECTIVES: Following a cross-sectional survey, a sub-sample of participants was interviewed to explore the interaction between symptoms and burden of treatment. BACKGROUND: Burden of treatment considers both the work associated with illness and treatment, including self-care work, as well as the individuals' capabilities and resources to engage in that work. The recent survey revealed the existence of a complex interaction. DESIGN: Qualitative abductive analysis of semi-structured interviews. METHODS: Adults with heart failure who participated in the survey were purposely sampled and invited to participate in semi-structured interviews. Location and mode of interview varied by participant choice. Excerpts from the verbatim transcripts were assessed for interactions between symptoms and burden of treatment, and when identified these were characterised and explained. We followed COREQ checklist for reporting. The patient research ambassador group was involved from research design to dissemination. RESULTS: Participants (n = 32) consistently discussed how symptoms altered their capability to engage in self-care work. As symptom intensity increased the difficultly of their self-care work increased. A number of intervening factors appeared to influence the relationship between symptoms and burden of treatment. Intervening factors included illness pathology, illness identity, the value of the tasks attempted and available support structures. These factors may change how symptoms and burden of treatment are perceived; a model was constructed to explain and summarise these interactions. CONCLUSIONS: The interaction between symptoms and burden of treatment is complex. Intervening factors-illness identity and pathology, task value and performance, and available support structures-appear to exert a strong influence on the interaction between symptoms and burden of treatment. RELEVANCE TO CLINICAL PRACTICE: These intervening factors present clinicians and researchers with opportunities to develop interventions that might reduce burden of treatment and improve symptoms and quality of life. CLINICAL TRIAL REGISTRATION: SYMPACT was registered with ISRCTN registry: ISRCTN11011943