Evaluation of rK39 rapid diagnostic tests for canine visceral leishmaniasis : longitudinal study and meta-analysis

Canine visceral leishmaniasis is a vector-borne disease caused by the intracellular parasite Leishmania infantum. It is an important veterinary disease, and dogs are also the main animal reservoir for human infection. The disease is widespread in the Mediterranean area, and parts of Asia and South and Central America, and is potentially fatal in both dogs and humans unless treated. Diagnosis of canine infections requires serological or molecular tests. Detection of infection in dogs is important prior to treatment, and in epidemiological studies and control programmes, and a sensitive and specific rapid diagnostic test would be very useful. Rapid diagnostic tests (RDTs) have been developed, but their diagnostic performance has been reported to be variable. We evaluated the sensitivity of a RDT based on serological detection of the rK39 antigen in a cohort of naturally infected Brazilian dogs. The sensitivity of the test to detect infection was relatively low, but increased with time since infection and the severity of infection. We then carried out a meta-analysis of published studies of rK39 RDTs, evaluating the sensitivity to detect disease and infection. The results suggest that rK39 RDTs may be useful in a veterinary clinical setting, but the sensitivity to detect infection is too low for operational control programmes

Multilocus Microsatellite Typing (MLMT) of Strains from Turkey and Cyprus Reveals a Novel Monophyletic L. donovani Sensu Lato Group

In eastern Mediterranean, leishmaniasis represents a major public health problem with considerable impact on morbidity and potential to spread. Cutaneous leishmaniasis (CL) caused by L. major or L. tropica accounts for most cases in this region although visceral leishmaniasis (VL) caused by L. infantum is also common. New foci of human CL caused by L. donovani complex strains were recently described in Cyprus and Turkey. Herein we analyzed Turkish strains from human CL foci in Çukurova region (north of Cyprus) and a human VL case in Kuşadasi. These were compared to Cypriot strains that were previously typed by Multilocus Enzyme Electrophoresis (MLEE) as L. donovani MON-37. Nevertheless, they were found genetically distinct from MON-37 strains of other regions and therefore their origin remained enigmatic. A population study was performed by Multilocus Microsatellite Typing (MLMT) and the profile of the Turkish strains was compared to previously analyzed L. donovani complex strains. Our results revealed close genetic relationship between Turkish and Cypriot strains, which form a genetically distinct L. infantum monophyletic group, suggesting that Cypriot strains may originate from Turkey. Our analysis indicates that the epidemiology of leishmaniasis in this region is more complicated than originally thought

Deconstructing dams and disease: predictions for salmon disease risk following Klamath River dam removals

The health of fish populations and the river systems they inhabit have broad ecological, cultural, recreational, and economic relevance. This is exemplified by the iconic anadromous salmonid fishes native to the West Coast of North America. Salmon populations have been constrained since the mid nineteenth century by dam construction and water reallocation. In the Klamath River (Oregon and California, USA), a series of dams built in the early-mid 20th century cut the basin in two and blocked anadromous fish access to more than 600 river kilometers. This dramatic loss of habitat, coupled with infectious diseases and resulting epizootics, have impacted the wellbeing of these salmonid populations. In 2023-2024, the Klamath River will undergo the largest river restoration project in US history. Removal of the four lowermost dams will cause profound physical changes to the river, including flow, water temperature, and channel geomorphology. The dam removals will reconnect the lower and upper portions of the basin, and provide fish passage after a century of segregation. Reestablishment of upstream and downstream fish movements will also alter the occupancy and abundance of the salmonid hosts and their pathogens. The increased habitat availability and longer migration routes will increase duration of pathogen exposure and potential impacts on juvenile survival and adult pre-spawn mortality. However, restoration of more natural flow and sediment regimes will decrease overall fish disease risk by disrupting complex parasite life cycles. To better understand these multifarious, competing factors, we review the salmonid species in the Klamath River, and provide an overview of their historical pathogen challenges and associated diseases and use this as a framework to predict the effects of dam removals on disease dynamics. Our review and predictions are a synthesis of expertise from tribal biologists, fish health specialists and fish biologists, many of whom have lived and worked on the Klamath River for decades. We conclude with recommendations for expansion of current pathogen monitoring and research efforts to measure changes in host-pathogen dynamics basin-wide

Just a game? Unjustified virtual violence produces guilt in empathetic players

Many avid gamers discount violent conduct in video games as morally insignificant as "it is just a game." However, recent debates among users, regarding video games featuring inappropriate forms of virtual violence, suggest a more complex truth. Two ex- periments (

SPATIAL ANALYSIS BASED HEALTH AND SAFETY RISK ASSESSMENT FOR LINEAR CONSTRUCTION PROJECTS

This paper describes an on-going study that aims to develop a web-based spatial decision support system model for proactive health and safety management in linear construction projects. Currently, health and safety management is usually performed reactively instead of proactive management since hazard identification and risk assessment is mostly performed on paper based documents that are not effectively used at site. This leads to accidents and fatalities at construction sites. The proposed system automatically identifies the spatial risks according to the topographic and layout map of the site, project specification and health and safety regulations by means of spatial analysis. It enables the workers and management personnel to access the possible hazards and thematic risk map of any portion of the construction site for linear projects. Finally, the described approach provides the proposed mitigation measures for the identified hazards. The developed system is expected to raise awareness in H&S among workers and engineers, and increase participation of workers to health and safety management

Comparison of enalapril and losartan in the treatment of posttransplant erythrocytosis

WOS: 000165335000042PubMed ID: 1109632

BALLOON PHOTOGRAMMETRY FOR CULTURAL HERITAGE

Documentation and measurements on historical buildings are mostly connected with close-range photogrammetry for high resolution in order to analyse the detailed structure of the objects. Classical flight campaigns are expensive, limited by the resolution or restricted. An alternative with immediate access to the data is the use of a helium-balloon based platform with digital camera. For a project in the southern part of Turkey has been developed a system with a He-Balloon, a digital camera, a control-monitor and a mechanic stabilization. As digital camera was chosen an Olympus Camedia 4040 with 4 Mega-Pixels, which has been calibrated. The Camera was fixed in a triangle frame on 2 axes, so that it had always nadir view. The triangle frame was fixed with 6 ropes below the balloon, and to the ground with 3 ropes, one carried a video and control wire. The video signal of the cameras view was sent to a monitor and the remote control of the camera was also solved by wires. Then a flight-campaign in August 2002 was made over an excavated historical theatre in the former city of Patara, the former major port of Lycia, located at the mouth of the Xanthos River. In the presentation we want to show you the technical solution and the results of this campaign. The accuracy of the aerial images was better than 4 cm in position and height, the digitising however complex, related to the objects structure. The 3D-Vector data built the base of a fine DTM. Orthophotos have been created in order to add information the digitised results. 1

Planning a social activity to improve psychological well-being and quality of life of hemodialysis patients: A pilot study

PubMed ID: 19695076We aimed to investigate the impact of social activity on anxiety-depression, self-esteem and quality of life in hemodialysis patients. Ninety-one patients were recruited to the current study. Of these, 31 patients wanted to take part in a theater play, while 60 patients (group C) did not. Thirty-one patients were randomly assigned to two groups: Group A (N = 15) started activities immediately and group B (N = 16) was assigned to a waiting list to be included in the activity of theater acting four months later. Beck Depression Inventory, Beck Anxiety Inventory, Rosenberg Self-esteem Scale and World Health Organization Quality of Life Scale short form (WHOQOL-BREF) were used to compare psychological parameters and quality of life of the groups before and after the social activity. The patients who were younger, more literate, and wealthier, had longer disease duration, and who were feeling physically and psychologically well, were willing to participate in social activity. The impact of social activity was evaluated between group A and C. After the social activity, there were significant differences in terms of depression (P = 0.008), self-esteem (P = 0.003), and physical (P = 0.04) and psychological (P = 0.05) sub-dimensions of quality of life between the groups. The depression score of the patients in group A decreased while their self-esteem increased, but the increase in the physical and psychological sub-dimension scores of quality of life scale did not reach statistical significance. This pilot study showed that social activity primarily improved depression and self-esteem in hemodialysis patients. © 2009 International Society for Apheresis