Geospatial Distribution of Obsessive-Compulsive Disorder Specialists: Understanding Access as a Function of Distance, Insurance Status, and Neighborhood Socioeconomic Status.

Obsessive-compulsive disorder is an impairing psychiatric condition affecting 1-2% of adults and youth. Cognitive-behavioral therapy with exposure and response prevention (CBT) is an efficacious intervention but requires specialty training and access is often limited. While certain factors are associated with treatment access, one key barrier that has not been explored is the geographic availability of OCD treatment providers. Using integrated geographically-referenced data, we examined the geographic distribution of OCD CBT specialty providers across the state of Texas, with particular attention to the relationship to neighborhood socioeconomic disadvantage, insurance status, and rural versus urban status. We found that specialist providers are almost exclusively located inside the highly urbanized parts of the state, primarily in more affluent areas, and often only accept self-pay. The characteristics of the areas located the furthest away from specialty OCD care include a high proportion of persons identifying as Hispanic; a high proportion of non-English speakers, households with income below poverty; households with no vehicles; and persons with no health insurance. Average household income decreased as distances from specialist providers increased. Broadly, findings confirm that OCD CBT specialty providers are clustered in large socially advantaged areas and that economic disadvantage remains a significant barrier to care. As inadequate or inappropriate treatment of OCD is likely to result in sustained and impairing symptoms, this is of great concern.

Improving Equitability and Inclusion for Testing and Detection of Lead Poisoning in US Children.

Policy Points Child lead poisoning is associated with socioeconomic inequity and perpetuates health inequality. Methods for testing and detection of child lead poisoning are ill suited to the current demographics and characteristics of the problem. A three-pronged revision of current testing approaches is suggested. Employing the suggested revisions can immediately increase our national capacity for equitable, inclusive testing and detection. ABSTRACT: Child lead poisoning, the longest-standing child public health epidemic in US history, is associated with socioeconomic inequity and perpetuates health inequality. Removing lead from children's environments ("primary prevention") is and must remain the definitive solution for ending child lead poisoning. Until that goal can be realized, protecting children's health necessarily depends on the adequacy of our methods for testing and detection. Current methods for testing and detection, however, are no longer suited to the demographics and magnitude of the problem. We discuss the potential deployment and feasibility of a three-pronged revision of current practices including: 1) acceptance of capillary samples for final determination of lead poisoning, with electronic documentation of "clean" collection methods submitted by workers who complete simple Centers for Disease Control and Prevention-endorsed online training and certification for capillary sample collection; 2) new guidance specifying the analysis of capillary samples by inductively coupled plasma mass spectrometry or graphite furnace atomic absorption spectrometry with documented limit of detection ≤0.2 µg/dL; and 3) adaptive "census tract-specific" universal testing and monitoring guidance for children from birth to 10 years of age. These testing modifications can bring child blood lead level (BLL) testing into homes and communities, immediately increasing our national capacity for inclusive and equitable detection and monitoring of dangerous lower-range BLLs in US children.

Effect of IQOS introduction on Philip Morris International cigarette sales in Spain: a Logarithmic Mean Divisa Index decomposition approach / Efecto de la introducción de IQOS en las ventas de cigarrillos de Philip Morris International en España: un enfoque de descomposición Logarithmic Mean Divisa Index

Objective: Philip Morris International, has already introduced its heated tobacco product, IQOS, in many countries and marketed it on the grounds that it is a less harmful alternative to health. The company claims that its intention is for its brand's traditional cigarette smokers to replace these with IQOS has rarely been independently tested. Method: Using time series data from September 2016 to June 2020, we analyze whether Heets sales have been accompanied by an improvement in the position of Philip Morris International in the market or if they have merely replaced lost sales of the rest of the brands sold by that tobacco company. Results: Sales of traditional cigarettes of all the brands marketed by PMI have been replaced by IQOS since the introduction of this heated tobacco product in Spain. Almost all of the variations observed in IQOS sales are due to the positioning of this product as a substitute for the range of traditional cigarettes marketed by Philip Morris International. Conclusions: As there is still no consensus that HTPs are explicitly less harmful to health, health authorities must control messages suggesting improved health outcomes thanks to HTP usage when compared to traditional cigarettes. Such messages could generate a false sense of security and lead to an increase in the consumption of tobacco. In Spain Heets in a category that has a lower tax burden than the category of traditional cigarettes. Tax authorities must consider this migration and the impact this may have on tax collection. (AU)

Objetivo: Philip Morris International ha introducido en muchos países su producto de tabaco calentado, IQOS, y lo ha comercializado con el argumento de que es una alternativa menos dañina para la salud. La compañía afirma que su intención es que los fumadores de cigarrillos tradicionales de su marca los reemplacen con IQOS. Método: Utilizando datos de series temporales de septiembre de 2016 a junio de 2020, analizamos si las ventas de Heets han ido acompañadas de una mejora en la posición de Philip Morris International en el mercado o si simplemente han sustituido a las ventas perdidas del resto de las marcas vendidas por esa compañía tabaquera. Resultados: Las ventas de cigarrillos tradicionales de todas las marcas comercializadas por Philip Morris International han sido sustituidas por IQOS desde la introducción de este producto de tabaco calentado en España. Casi todas las variaciones observadas en las ventas de IQOS se deben al posicionamiento de este producto como sustituto de la gama de cigarrillos tradicionales que comercializa Philip Morris International. Conclusiones: Como todavía no existe consenso en cuanto a que los HTP sean explícitamente menos dañinos para la salud, las autoridades sanitarias deben controlar los mensajes que sugieran mejores resultados en la salud gracias al uso de HTP en comparación con los cigarrillos tradicionales. En España se encuentran en una categoría que tiene una carga fiscal más baja que la de los cigarrillos tradicionales. Las autoridades fiscales deben considerar esta migración y el impacto que puede tener en la recaudación fiscal. (AU)

Effect of IQOS introduction on Philip Morris International cigarette sales in Spain: a Logarithmic Mean Divisa Index decomposition approach.

OBJECTIVE: Philip Morris International, has already introduced its heated tobacco product, IQOS, in many countries and marketed it on the grounds that it is a less harmful alternative to health. The company claims that its intention is for its brand's traditional cigarette smokers to replace these with IQOS has rarely been independently tested. METHOD: Using time series data from September 2016 to June 2020, we analyze whether Heets sales have been accompanied by an improvement in the position of Philip Morris International in the market or if they have merely replaced lost sales of the rest of the brands sold by that tobacco company. RESULTS: Sales of traditional cigarettes of all the brands marketed by PMI have been replaced by IQOS since the introduction of this heated tobacco product in Spain. Almost all of the variations observed in IQOS sales are due to the positioning of this product as a substitute for the range of traditional cigarettes marketed by Philip Morris International. CONCLUSIONS: As there is still no consensus that HTPs are explicitly less harmful to health, health authorities must control messages suggesting improved health outcomes thanks to HTP usage when compared to traditional cigarettes. Such messages could generate a false sense of security and lead to an increase in the consumption of tobacco. In Spain Heets in a category that has a lower tax burden than the category of traditional cigarettes. Tax authorities must consider this migration and the impact this may have on tax collection.

Effects of tenofovir on telomeres, telomerase and T cell maturational subset distribution in long-term aviraemic HIV-infected adults.

OBJECTIVES: To evaluate whether the negative impact of tenofovir on telomere length (TL) is due to immune reconstitution interference or inhibition of telomerase. METHODS: One hundred and twenty-eight long-term aviraemic HIV adults treated with tenofovir-containing (n = 79) or tenofovir-sparing regimens (n = 49) were recruited to compare the following: TL in whole blood, PBMCs, CD4+ T cells and CD8+ T cells by quantitative PCR (qPCR); telomerase activity in PBMCs, CD4+ cells and CD8+ T cells using the TRAPeze RT Telomerase Detection Kit; and T cell maturational subset distribution by flow cytometry. RESULTS: In an adjusted analysis, participants treated with tenofovir for at least 4 years had shorter TL in CD8+ T cells (P = 0.04) and lower telomerase activity in CD4+ (P = 0.012) and CD8+ T cells (P = 0.023). Tenofovir treatment was also associated with lower proportions of recent thymic emigrant (RTE) CD4+ cells (P = 0.031) and PD1 marker expression (P = 0.013). CONCLUSIONS: In long-term aviraemic HIV adults, the inhibition of telomerase by tenofovir could explain telomere shortening in CD8+ T cells. There is no telomere shortening in the CD4+ compartment and the decrease in telomerase activity could be explained both by the inhibition by tenofovir and by the lower proportion of RTE CD4+cells.

Bullying/Cyberbullying en Quinto y Sexto Curso de Educación Primaria: Diferencias entre Contextos Rurales y Urbanos / Bullying/cyberbullying in 5th and 6th year of primary education: Differences between rural and urban areas

El objetivo del estudio ha sido analizar las diferencias de bullying (tradicional y cyberbullying) en contextos rurales y urbanos. Ha participado un total de 2,162 estudiantes de 5º (52.7%) y 6º (47.3%) de Educación Primaria, un 49.3% en contexto urbano y 50.7% en contexto rural. Los resultados indican un porcentaje de intervención similar en colegios de contexto urbano y de contexto rural. Sin embargo, en los colegios rurales se ha encontrado una mayor prevalencia de víctimas de bullying verbal, exclusión y cyberbullying, mientras que en los colegios urbanos hay más alumnos que son agresores de bullying verbal y exclusión. En los colegios rurales la agresión va más dirigida a los compañeros del colegio, mientras que en los colegios urbanos se dirige hacia gente de fuera del colegio. Estos resultados indican que el tamaño de la población en la que se ubican las escuelas puede ser un factor relevante para la intervención.

The aim of this study is to analyse the differences between bullying and cyberbullying in rural and urban areas. The number of students who have participated in this research is 2,162: 52.7% in their 5th year of Primary Education in Spain (ages 10-11) and 47.3 % in their 6th year (ages 11-12) – 50.7% of them were living in the countryside and 49.3% in the city. Although the results showed that the impact of bullying/cyberbullying in rural and urban schools is very similar, some distinctive features have been identified: for example, in rural schools there are more victims of verbal bullying, exclusion, and cyberbullying, whereas in urban schools there is a clear trend of verbal bullying and exclusion. Depending on the context, there is also a significant pattern regarding the victims: in rural schools, victims of this type of abuse are schoolmates, but in urban schools victims and aggressors do not go to the same school. The results also show that the impact of this abuse depends on the size of the city/town where schools are located.

Measuring anomalies in cigarette sales using official data from Spanish provinces: Are the anomalies detected by the Empty Pack Surveys (EPSs) used by Transnational Tobacco Companies (TTCs) the only anomalies?

INTRODUCTION: There is a literature that questions the veracity of the studies commissioned by transnational tobacco companies (TTCs) to measure the illicit tobacco trade. Furthermore, there are studies that have indicated that the empty pack surveys (EPSs) ordered by TTCs overestimate the size of this trade. This study simultaneously analyzed whether the EPSs established in each of the 47 Spanish provinces were accurate and measured anomalies observed in provinces where sales exceed expected values. METHODS: To achieve the objectives of this study, provincial data on cigarette sales, prices and GDP per capita were used. These data were modeled with machine learning techniques that are widely used to detect anomalies in other areas. RESULTS: The magnitude of the average anomaly in provinces where sales are higher than their expected values exceeds 40%, while the average anomaly in provinces where sales are lower than their expected values (as detected by the EPSs) is <15%. Furthermore, the results reveal that there is a clear geographical pattern to the provinces in which sales below reasonable values are observed. In addition, the values provided by the EPSs in Spain, as indicated in the previous literature, are slightly overestimated. Finally, some regions bordering other countries or that are highly influenced by tourism have observed sales that are higher than their expected values. CONCLUSIONS: Cooperation between countries in their tobacco control policies can have better effects than policies developed based on information from a single country. The lack of control over the transactions of tourists and the inhabitants of bordering countries can cause important anomalies that distort the understanding of tobacco consumption that governments have based on official data.

Asymmetric behavior of tobacco consumption in Spain across the business cycle: a long-term regional analysis.

Many theoretical and empirical studies have analyzed the relationship between the economic cycle and tobacco consumption using the GDP and unemployment rates as the key variables for measuring economic phases. However, few studies focus on the pathways that cause tobacco consumption to be linked with the economic cycle, and there are no studies analyzing the heterogeneous effects underlying this relationship across nations and regions. This article explores the relationship and its pathways in 16 Spanish regions for the period 1989-2018. To this end, we apply a Granger causality analysis based on the augmented vector autoregressive (VAR) model in levels and extra lags. This method provides more efficient and robust results than the standard VAR model, which can lead to biased results with limited samples, especially in a region-by-region analysis. The empirical results suggest that the impact of the business cycle on tobacco consumption is heterogeneous and specific to each region. In addition, although recession phases cause a decline in tobacco consumption in Spain, in line with the literature, this procyclical relationship does not occur for expansion phases in all regions. One of the main findings of this article is that in expansion phases, tobacco consumption is sensitive to GDP, while in recession phases, tobacco consumption is affected by unemployment. National and regional governments should consider these results when they develop smoking control policies because homogeneous strategies can lead to heterogeneous results. Thus, the results can be useful for policymakers dealing with tobacco control strategies.

Flavonoid glycosides from Persea caerulea. Unraveling their interactions with SDS-micelles through matrix-assisted DOSY, PGSE, mass spectrometry, and NOESY.

Two flavonoid glycosides derived from rhamnopyranoside (1) and arabinofuranoside (2) have been isolated from leaves of Persea caerulea for the first time. The structures of 1 and 2 have been established by 1 H NMR, 13 C NMR, and IR spectroscopy, together with LC-ESI-TOF and LC-ESI-IT MS spectrometry. From the MS and MS/MS data, the molecular weights of the intact molecules as well as those of quercetin and kaempferol together with their sugar moieties were deduced. The NMR data provided information on the identity of the compounds, as well as the α and ß configurations and the position of the glycosides on quercetin and kaempferol. We have also explored the application of sodium dodecyl sulfate (SDS) normal micelles in binary aqueous solution, at a range of concentrations, to the diffusion resolution of these two glycosides, by the application of matrix-assisted diffusion ordered spectroscopy (DOSY) and pulse field gradient spin echo (PGSE) methodologies, showing that SDS micelles offer a significant resolution which can, in part, be rationalized in terms of differing degrees of hydrophobicity, amphiphilicity, and steric effects. In addition, intra-residue and inter-residue proton-proton distances using nuclear Overhauser effect build-up curves were used to elucidate the conformational preferences of these two flavonoid glycosides when interacting with the micelles. By the combination of both diffusion and nuclear Overhauser spectroscopy techniques, the average location site of kaempferol and quercetin glycosides has been postulated, with the former exhibiting a clear insertion into the interior of the SDS-micelle, whereas the latter is placed closer to the surface. Copyright © 2016 John Wiley & Sons, Ltd.

Effect of Cyantraniliprole, a Novel Insecticide, on the Inoculation of Candidatus Liberibacter Asiaticus Associated with Citrus Huanglongbing by the Asian Citrus Psyllid (Hemiptera: Liviidae).

The Asian citrus psyllid (Diaphorina citri Kuwayama) is the principal vector of 'Candidatus Liberibacter asiaticus' (CLas) associated with huanglongbing (HLB), the most serious citrus disease worldwide. New control measures including pesticides are urgently needed to combat HLB, especially to protect young or newly planted citrus trees from CLas-inoculation by vector psyllids. Here, we tested CLas-inoculation by D. citri adults (CLas-exposed, reared on infected plants) by feeding them for 7 d on excised healthy citrus leaves with dry residues of cyantraniliprole (Exirel), a novel insecticide, in comparison with fenpropathrin (Danitol 2.4EC), an insecticide commonly used against D. citri. Fewer adults settled (putatively feeding or probing) on leaves treated with cyantraniliprole than those treated with fenpropathrin or water controls. Also, psyllid adults died at a slower rate on leaves treated with cyantraniliprole than those treated with fenpropathrin, although the final cumulative mortality did not differ between the two treatments. In quantitative real-time polymerase chain reaction tests, 59.0-65.3% of the CLas-exposed psyllid adults were proven to be CLas-positive. Inoculation rates of CLas (using 10 adults per leaf) into untreated healthy citrus leaves (47.5-85%) were significantly higher than rates into leaves treated with cyantraniliprole or fenpropathrin (2.5-12.5%). Reduced inoculation rates to leaves treated with cyantraniliprole probably occurred as a result of reduced feeding or probing by D. citri. The excised leaf assay method, which took only a few weeks compared with up to a year or longer using whole plants, can be an effective tool for testing the effect of new pesticides or other treatments in reducing CLas inoculation or transmission by psyllid vectors.

Correlación clínico-patológica del tromboembolismo pulmonar en la cirugía cardiovascular / Clinical-pathological correlation of pulmonary thromboembolism in cardiovascular surgery

Introducción: El tromboembolismo pulmonar es el estado generado por la interrupción del riego sanguíneo a una porción del pulmón por obstrucción de un vaso aferente. Objetivo: Comparar la correlación del diagnóstico clínico-patológico del TEP en los pacientes intervenidos quirúrgicamente y describir algunas variables relacionadas. Método: Se realizó un estudio descriptivo-retrospectivo. La muestra estuvo integrada por los 26 pacientes que tuvieron diagnóstico clínico o necrópsico de tromboembolismo pulmonar. Resultados: Todos los pacientes (100 por ciento) presentaron taquicardia y taquipnea. La bronconeumonia y la enfermedad pulmonar obstructiva crónica (40 por ciento respectivamente), fueron las principales causas de diagnóstico erróneo. En la mayoría de los casos (45,4 por ciento) la afectación estuvo a nivel de las ramas finas. El diagnóstico clínico fue confirmado en el 34,8 por ciento de los enfermos. Los principales factores de riesgo identificados fueron: la cirugía de gran envergadura, la necesidad de encamamiento prolongado (81,8 por ciento), el uso de circulación extracorpórea y la presencia de shock (72,7 por ciento). En los pacientes con diagnóstico confirmado el 72,7 por ciento tenía una dosis terapéutica adecuada de heparina. Conclusiones: El tromboembolismo pulmonar fue una complicación infrecuente de la cirugía cardíaca y la sospecha clínica superó la existencia real de la enfermedad, por lo que la correlación clínico-patológica fue escasa(AU)

An EPG study of the probing behavior of adult Bemisia tabaci biotype Q (Hemiptera: Aleyrodidae) following exposure to cyantraniliprole.

Cyantraniliprole is a novel insecticide for control of multiple chewing and sucking insect pest species including the sweetpotato whitefly Bemisia tabaci (Gennadius), which is one of the most important polyphagous pests in tropical, subtropical, and Mediterranean regions. This study aims to evaluate the effects of cyantraniliprole on the probing behavior of B. tabaci on tomato. Electrical penetration graph data indicated that on plants treated with cyantraniliprole (foliar application), adult whiteflies of the genetic variant Q2 were not able to reach the phloem and consequently did not perform the activities represented by E1 and E2 waveforms, i.e., phloem salivation (during which inoculation of geminiviruses occurs) and phloem sap ingestion (during which geminiviruses are acquired by the whiteflies), respectively. The complete failure of B. tabaci biotype Q adults to feed from the phloem of tomato plants treated with cyantraniliprole could be explained by rapid cessation of ingestion because of the mode of action of this insecticide. Overall, these findings indicated that cyantraniliprole might represent a useful new tool for producers to protect tomato plants from damage by B. tabaci.

A four-culture study of self-enhancement and adjustment using the social relations model: do alternative conceptualizations and indices make a difference?

In the self-enhancement literature, 2 major controversies remain--whether self-enhancement is a cultural universal and whether it is healthy or maladaptive. Use of the social relations model (SRM; Kenny, 1994) might facilitate resolution of these controversies. We applied the SRM with a round-robin design in both friend and family contexts in 4 diverse cultures: the United States (n = 399), Mexico (n = 413), Venezuela (n = 290), and China (n = 222). Results obtained with social comparison, self-insight, and SRM conceptualizations and indices of self-enhancement were compared for both agentic traits (i.e., egoistic bias) and communal traits (i.e., moralistic bias). Conclusions regarding cultural differences in the prevalence of self-enhancement vs. self-effacement tendencies, and the relationship between self-enhancement and adjustment, varied depending on the index of self-enhancement used. For example, consistent with cultural psychology perspectives, Chinese showed a greater tendency to self-efface than self-enhance using social comparison and self-insight indices, particularly on communal traits in the friend context. However, no cultural differences were observed when perceiver and target effects were controlled using the SRM indices. In all cultures, self-enhancement indices were moderately consistent across friend and family contexts, suggesting traitlike tendencies. To a similar extent in all 4 cultures, self-enhancement tendencies, as measured by the SRM indices, were moderately related to self-rated adjustment, but unrelated, or less so, to observer-rated adjustment.

Desarrollo progresivo de onda J gigante y prolongación extrema del intervalo qt en la hipotermia inducida / Progressive development of giant J wave and extreme prolongation of QT interval in induced hypothermia

La aparición de ondas J es el suceso más común observado en el electrocardiograma de un paciente con hipotermia. Se presenta el caso de un hombre de 47 años, que le fue inducido un paro cardíaco mediante hipotermia para una cirugía cardíaca. En el trazo electrocardiográfico se evidencia el desarrollo progresivo de una onda J exuberante. Estas ondas pueden simular un infarto agudo de miocardio y se consideran una variable predictora de arritmogénesis(AU)

Valor de la morfina liofilizada intratecal en la revascularización miocárdica quirúrgica / Value of intrathecal lyophilized morphine in coronary artery bypass surgery

Introducción: La analgesia subaracnoidea constituye un método terapéutico útil en la cirugía cardíaca. Objetivo: Comparar el uso de la morfina subaracnoidea e intravenosa para la analgesia postoperatoria de la revasculaización miocárdica quirúrgica. Método: Se realizó un estudio comparativo, longitudinal en 40 pacientes, divididos en dos grupos. El de analgesia subaracnoidea recibió morfina liofilizada 15 mcg/kg, y el grupo de morfina intravenosa, 0,3 mg/kg previo y posterior a la cirugía. Resultados: Predominó el sexo femenino, las edades y los pesos promedio de ambos grupos fueron similares (p > 0.05). El 90 por ciento de los enfermos del grupo de morfina subaracnoidea tuvo una analgesia excelente a las 8 horas de la intervención, y se mantuvo entre buena y excelente a las 12 y 24 horas posteriores, respectivamente; mientras que solo el 50 por ciento de los pacientes de morfina intravenosa refirió una analgesia buena a las 8 horas de operados; y a las 24 horas, todos se quejaron de una analgesia insuficiente o mala (p < 0.05). El tiempo total promedio de analgesia postoperatoria obtenida en el grupo de morfina intratecal fue de 24,41 horas y en el de morfina intravenosa, de 8,76 horas (p < 0.01). Los principales efectos adversos fueron el prurito para ambos grupos, y la hipotensión y la bradicardia para el grupo con morfina intravenosa, aunque las diferencias no fueron significativas. Conclusiones: La morfina subaracnoidea demostró su utilidad como agente analgésico en la revascularización miocárdica quirúrgica, con mejor y más prolongada analgesia que los enfermos tratados con morfina intravenos(AU)

Use of fluorescence, a novel technique to determine reduction in Bemisia tabaci (Hemiptera: Aleyrodidae) nymph feeding when exposed to Benevia and other insecticides.

The sweet potato whitefly, Bemisia tabaci (Gennadius), is an economically important pest in the United States and other countries. Growers in many places rely on the use of insecticides to reduce populations of B. tabaci. However, insecticides may take a few days to cause B. tabaci mortality and some do not reduce feeding before death. Earlier reduction of feeding of whiteflies would decrease the physiological effects on plants, reduce the production of sooty mold and potentially reduce the transmission of viruses. Measuring the reduction in feeding after the exposure of B. tabaci to an insecticide has proven difficult. This series of laboratory experiments demonstrate the usefulness of fluorescence in determining B. tabaci feeding cessation. Fluorescein sodium salt is systemically transported in the xylem from the roots to the plant leaves and absorbed by B. tabaci nymphs feeding on these plants. Nymphs start fluorescing shortly after the cotton plant root system is submerged in the fluorescein sodium salt. Using this novel technique, the effect of three insecticides with different modes of action, cyantraniliprole, imidacloprid, and spirotetramat on B. tabaci was evaluated and compared to determine reduction in feeding. Results indicate that B. tabaci nymphs feeding on a plant treated with Benevia have a significant reduction of feeding when compared with nymphs feeding on plants treated with imidacloprid or spirotetramat. Both Benevia and spirotetramat caused significant nymphal mortality by 48 h after exposure. This novel technique will be useful to demonstrate the feeding cessation or reduction in feeding produced by different insecticides in several sucking insect groups.

Strain specificity and simultaneous transmission of closely related strains of a Potyvirus by Myzus persicae.

Potato virus Y (PVY), a Potyvirus, is transmitted by aphids in a nonpersistent manner. PVY severely affects potato production worldwide. Single and mixed infections of PVY strains, namely PVY(O), PVY(NTN), and PVY(N:O) are a common occurrence in potato systems. However, information available on the ability of aphids to simultaneously transmit multiple PVY strains, specificity associated with simultaneous transmission, and factors affecting specificity are limited. Aphid-mediated transmission experiments were conducted to test the ability of individual aphids to transmit multiple strains using a PVY indicator host. Preliminary results revealed that aphids can transmit at least two viral strains simultaneously. Subsequently, aphid-mediated transmission of three dual-strain combinations was tested using potato plants. Individual aphids transmitted two viral strains simultaneously for all three dual-strain combinations. In all aphid-mediated dual-strain infections involving PVY(NTN), the rate of PVY(NTN) infection was greater than the infection rates of the second strain and dual-strain combinations, indicating specificity associated with transmission of PVY strains. Results of aphid-mediated transmission experiments were compared with results obtained through mechanical transmission. In general, PVY infection rates from aphid-mediated transmission were lower than the rates obtained through mechanical transmission. Unlike aphid-mediated transmission, component strains in dual-strain inoculations were not eliminated during mechanical transmission. These results suggest that there may also be interference associated with aphid-mediated transmission of closely related PVY strains. Perhaps, the observed specificity and/or interference may explain the increase in the incidence of PVY(NTN) and other necrotic strains in recent years.

Are cross-cultural comparisons of personality profiles meaningful? Differential item and facet functioning in the Revised NEO Personality Inventory.

Measurement invariance is a prerequisite for confident cross-cultural comparisons of personality profiles. Multigroup confirmatory factor analysis was used to detect differential item functioning (DIF) in factor loadings and intercepts for the Revised NEO Personality Inventory (P. T. Costa, Jr., & R. R. McCrae, 1992) in comparisons of college students in the United States (N = 261), Philippines (N = 268), and Mexico (N = 775). About 40%-50% of the items exhibited some form of DIF and item-level noninvariance often carried forward to the facet level at which scores are compared. After excluding DIF items, some facet scales were too short or unreliable for cross-cultural comparisons, and for some other facets, cultural mean differences were reduced or eliminated. The results indicate that considerable caution is warranted in cross-cultural comparisons of personality profiles.

Efectos de la hemodilución normovolémica con autodonación de bajo volumen sobre varios parámetros hematológicos en la cirugía cardiovascular con circulación extracorpórea / Effects of normovolemic hemodilution with low volume autologous donations on various hematological parameters in cardiovascular surgery with cardiopulmonary bypass

Introducción y objetivos: La cirugía cardíaca con circulación extracorpórea se caracteriza por grandes pérdidas hemáticas perioperatorias y alteraciones multifactoriales de los parámetros de la coagulación. Por estas razones es frecuente el empleo de transfusiones alogénicas. El propósito de este trabajo fue determinar los efectos de la hemodilución normovolémica intencional, con autodonación de bajo volumen, sobre algunos parámetros hematológicos en el paciente intervenido con circulación extracorpórea. Método: Estudio longitudinal, comparativo, prospectivo, en 27 pacientes a los que se les realizó cirugía cardiovascular con circulación extracorpórea, sujetos a hemodilución normovolémica intencional de bajo volumen. Se estudiaron parámetros, como: volemia del enfermo, cuantía de la sangría, cifras de hematócrito, conteo de plaquetas, tiempo de tromboplastina e INR, antes y después de la hemodilución y de la autotransfusión. Resultados: Se encontró una extracción promedio de 10,5 por ciento de la volemia para los hombres y 13,12 por ciento para las mujeres, con reducción altamente significativa del hematócrito, y significativa de las plaquetas, aunque ambas variables se mantuvieron dentro de valores normales, sin existir afectación de los parámetros de la coagulación con la hemodilución; luego de la autotransfusión se encontró un incremento altamente significativo del hematócrito y del conteo de plaquetas, con reducción significativa de los tiempos de tromboplastina e INR. Conclusiones: La hemodilución normovolémica de bajo volumen no produce alteraciones clínicas importantes de los parámetros hematológicos estudiados, y la autotransfusión posterior a la derivación cardiopulmonar mejora estos parámetros(AU)

Within plant distribution of Potato Virus Y in hairy nightshade (Solanum sarrachoides): an inoculum source affecting PVY aphid transmission.

Potato virus Y (PVY) is vectored by several potato-colonizing and non-colonizing aphid species in a non-persistent manner and has a wide host range. It occurs naturally in several plant families. Myzus persicae and Macrosiphum euphorbiae are the most efficient potato-colonizing aphid vectors of PVY. Rhopalosiphum padi, a cereal aphid that migrates in large numbers through potato fields during the middle of the growing season, does not colonize potato plants but can transmit PVY. Hairy nightshade, Solanum sarrachoides, a prevalent annual solanaceous weed in the Pacific Northwest (PNW) of the United States, is an alternative host for PVY and a preferred host for M. persicae and M. euphorbiae. Hence, hairy nightshade plants might play an important role as an inoculum source in the epidemiology of PVY. We looked at titre accumulation and distribution of PVY(O), PVY(N:O) and PVY(NTN) in S. sarrachoides and potato after aphid inoculation with M. persicae and studied the transmission of PVY(O) and PVY(NTN), by M. persicae, M. euphorbiae and R. padi from hairy nightshade to potato plants. Virus titre at different positions on the plant was similar in S. sarrachoides and potato plants with strains PVY(O) and PVY(N:O). Titres of PVY(NTN) were similar in S. sarrachoides and potato but differences in titre were observed at different positions within the plant depending on the plant phenology. Percentage transmission of PVY(NTN) by M. persicae and M. euphorbiae was twice as high (46 and 34%, respectively) from hairy nightshade to potato than from potato to potato (20 and 14%). Percentage transmission of PVY(O) by M. persicae and M. euphorbiae was not affected by the inoculum source. No effect of the inoculum source was observed in the transmission of either PVY strain by R. padi. These results show that hairy nightshade may be an equal or better virus reservoir than potato and thus, important in the epidemiology of PVY.