Monday, March 3, 2014
Malaria: The Constant Epidemic
The Journal of Parasitology – Malaria has been around for millennia, and there are written references to it from early societies in China, India, Mesopotamia, Egypt, and Greece. Each year an estimated 500 million people are infected worldwide, making malaria a major public health concern. Some countries still experience malaria epidemics, which can also result in significant economic losses. Malaria is typically transmitted to humans by mosquitoes that are infected with the protozoan parasite of the Plasmodium species. Much research has been conducted to learn more about the parasites so they can be controlled more effectively or even eradicated; however, there is still more to learn.
Thursday, February 27, 2014
Absence or presence of a known indicator can both lead to disease diagnosis
Pediatric and Developmental Pathology – Clinicians are still seeking the most reliable method for evaluation of Hirschsprung disease. One useful indicator is the absence of calretinin-immunoreactive mucosal innervation, part of the process of establishing nerve cells in the colon. However, this method can also pose the risk of a misleading diagnosis, particularly in the very short-segment Hirschsprung disease variant (VS-HD).
Tuesday, February 25, 2014
The Disappearance of the Kingsnake in the Southeastern United States
Herpetologica – The ecosystems that shape our planet are a delicate balance of water, mineral, plant, and animal life, and a large part of what maintains the natural order is the predator–prey relationship. Unfortunately, when we see a shift begin to occur, and a particular species population starts to thin, it can be nearly impossible to predict how an ecosystem will react to that change, especially if another species becomes abundant.
Monday, February 24, 2014
Preferred javelina habitats affected by climate shifts and controlled burns
Journal of Mammology – Javelinas, medium-sized mammals also known as collared peccaries that resemble pigs in appearance, have been spreading north in New Mexico. Scientists know little about the links between the mammals and their habitat, but they speculate that javelinas may change their behavior to cope with changes in climate.
Monday, February 24, 2014
Cleft Lip and Palate: How Adulthood Surgeries Can Be Avoided
Thursday, February 20, 2014
Drug-eluting balloon angioplasty treatment shows encouraging results in a diabetic population
Journal of Endovascular Therapy – Despite good immediate results, in up to 40 percent of patients, obstructed arteries in the leg treated with a stent will again become blocked. This in-stent restenosis is typically treated with balloon angioplasty to clear the artery. The addition of drug-eluting balloons is showing improved outcomes for restenosis and could become the treatment of choice for femoropopliteal in-stent restenosis.
Wednesday, February 19, 2014
Simulation model predicts when and how weeds will develop herbicide resistance
Weed Technology – Effective herbicides are essential to rice production in the mid-southern United States. In recent decades, the primary weed that challenges rice fields, barnyardgrass, developed resistance to two widely used herbicides – propanil and quinclorac. To ensure that current herbicides remain effective, a simulation model is being used to predict the weed’s resistance in future years to guide weed management plans today.
Monday, February 10, 2014
Genetic selection could produce cattle resistant to toxic larkspurs
Rangelands – Cattle are not picky eaters: Put them in a pasture with toxic plants and edible grasses, and they quickly swallow both. For ranchers, this diet comes at a heavy price, with up to 10 percent of steers that graze fields containing toxic larkspurs dying after eating the poisonous plants.
Tuesday, January 28, 2014
New Monitoring Systems on the Horizon for Rangelands
Rangeland Ecology & Management – The western United States is home to large areas of rangeland resources. These vast areas are primarily used as grazing lands and cover approximately 53% of the western United States and 36% of the entire country. The Bureau of Land Management (BLM) is charged with overseeing management of a large portion of these lands, including livestock grazing and conserving sensitive species and their habitats. However, the BLM may need new and more effective monitoring systems to help keep up with such an expansive area, roughly 1,000,000 km2.
Thursday, January 23, 2014
Herbicide resistant Palmer amaranth weeds show fitness and persistence
Weed Science – Palmer amaranth is a weed native to the southwestern United States that has developed resistance to various herbicides since the late 1980s. Its resistance to glyphosate was first confirmed in 2006 in Macon County, Georgia, and has since spread to 13 states. Palmer amaranth, which is capable of producing more than 600,000 seeds per female plant, significantly affects crop yields throughout the southern United States.