Trace elements in glucometabolic disorders: an update

Many trace elements, among which metals, are indispensable for proper functioning of a myriad of biochemical reactions, more particularly as enzyme cofactors. This is particularly true for the vast set of processes involved in regulation of glucose homeostasis, being it in glucose metabolism itself or in hormonal control, especially insulin. The role and importance of trace elements such as chromium, zinc, selenium, lithium and vanadium are much less evident and subjected to chronic debate. This review updates our actual knowledge concerning these five trace elements. A careful survey of the literature shows that while theoretical postulates from some key roles of these elements had led to real hopes for therapy of insulin resistance and diabetes, the limited experience based on available data indicates that beneficial effects and use of most of them are subjected to caution, given the narrow window between safe and unsafe doses. Clear therapeutic benefit in these pathologies is presently doubtful but some data indicate that these metals may have a clinical interest in patients presenting deficiencies in individual metal levels. The same holds true for an association of some trace elements such as chromium or zinc with oral antidiabetics. However, this area is essentially unexplored in adequate clinical trials, which are worth being performed

To protect everything, please click here: Does a revolution in data collection guarantee one in conservation?

An editorial published in Nature (2007) states that “… it can sometimes comes as a surprise for outsiders to learn how far removed the conservation biologist often is from actual efforts to save species”. For conservation biologists who are involved in practical conservation work particularly in countries where the national capacity and infrastructure for conservation is limited, it is clear that it will take more than technology to save the world. We observe an increasing emphasis on technology in the literature and among the research community and ask: How can a revolution in data collection best lead to one in conservation

Status and management of brown bears in Turkey

The brown bear (Ursus arctos) is the largest carnivore in Turkey. Its present distribution is mainly confined to the intact natural habitats of the Black Sea and Eastern Anatolian regions. Forest fragmentation and direct persecution by humans have resulted in population declines in other regions during the last50 years. Human-bear conflicts are more often observed in the eastern Black Sea than other areas within Turkey, but the species does not seriously threatenhumans in Turkey. Turkish authorities have not kept records of bear damage, but depredation has mainly occurred on cattle and sheep. The brown bear has a more positive image among the local people than the wolf (Canis lupus). Brown bears are a protected species, but protected areas in Turkey are too small to provide a refuge for the species. Priority actions for the conservation of brown bears in Turkey are legislation development and implementation, research on population status and range, expansion of current protected areas, and identification of new ones. Public awareness and capacity building of the local authorities on theoretical and practical aspects of wildlife management, such as designing surveys, collecting systematic data, analyzing and reporting data, andbrown bear handling techniques, will also play a critical role

Scientific crowdsourcing in wildlife research and conservation: Tigers (Panthera tigris) as a case study

With around 3,200 tigers (Panthera tigris) left in the wild, the governments of 13 tiger range countries recently declared that there is a need for innovation to aid tiger research and conservation. In response to this call, we created the “Think for Tigers” study to explore whether crowdsourcing has the potential to innovate the way researchers and practitioners monitor tigers in the wild. The study demonstrated that the benefits of crowdsourcing are not restricted only to harnessing the time, labor, and funds from the public but can also be used as a tool to harness creative thinking that can contribute to development of new research tools and approaches. Based on our experience, we make practical recommendations for designing a crowdsourcing initiative as a tool for generating ideas

Scientific crowdsourcing in wildlife research and conservation: Tigers (Panthera tigris) as a case study

With around 3,200 tigers (Panthera tigris) left in the wild, the governments of 13 tiger range countries recently declared that there is a need for innovation to aid tiger research and conservation. In response to this call, we created the “Think for Tigers” study to explore whether crowdsourcing has the potential to innovate the way researchers and practitioners monitor tigers in the wild. The study demonstrated that the benefits of crowdsourcing are not restricted only to harnessing the time, labor, and funds from the public but can also be used as a tool to harness creative thinking that can contribute to development of new research tools and approaches. Based on our experience, we make practical recommendations for designing a crowdsourcing initiative as a tool for generating ideas

ThinOptX vs AcrySof: Comparison of visual and refractive results, contrast sensitivity, and the incidence of posterior capsule opacification

PURPOSE. To evaluate the visual and refractive results, the changes in contrast sensitivity, and the incidence of posterior capsule opacification (PCO) after the implantation of UltraChoice 1.0 ThinOptX (ThinOptX Inc.) intraocular lens (IOL) and conventional acrylic foldable IOL (AcrySof MA30AC)

Turkey's globally important biodiversity in crisis

Turkey (Turkiye) lies at the nexus of Europe, the Middle East, Central Asia and Africa. Turkey's location, mountains, and its encirclement by three seas have resulted in high terrestrial, fresh water, and marine biodiversity. Most of Turkey's land area is covered by one of three biodiversity hotspots (Caucasus, Irano-Anatolian, and Mediterranean). Of over 9000 known native vascular plant species, one third are endemic. Turkey faces a significant challenge with regard to biodiversity and associated conservation challenges due to limited research and lack of translation into other languages of existing material. Addressing this gap is increasingly relevant as Turkey's biodiversity faces severe and growing threats, especially from government and business interests. Turkey ranks 140th out of 163 countries in biodiversity and habitat conservation. Millennia of human activities have dramatically changed the original land and sea ecosystems of Anatolia, one of the earliest loci of human civilization. Nevertheless, the greatest threats to biodiversity have occurred since 1950, particularly in the past decade. Although Turkey's total forest area increased by 5.9% since 1973, endemic-rich Mediterranean maquis, grasslands, coastal areas, wetlands, and rivers are disappearing, while overgrazing and rampant erosion degrade steppes and rangelands. The current "developmentalist obsession", particularly regarding water use, threatens to eliminate much of what remains, while forcing large-scale migration from rural areas to the cities. According to current plans, Turkey's rivers and streams will be dammed with almost 4000 dams, diversions, and hydroelectric power plants for power, irrigation, and drinking water by 2023. Unchecked urbanization, dam construction, draining of wetlands, poaching, and excessive irrigation are the most widespread threats to biodiversity. This paper aims to survey what is known about Turkey's biodiversity, to identify the areas where research is needed, and to identify and address the conservation challenges that Turkey faces today. Preserving Turkey's remaining biodiversity will necessitate immediate action, international attention, greater support for Turkey's developing conservation capacity, and the expansion of a nascent Turkish conservation ethic. (C) 2011 Published by Elsevier Ltd