Tag: "transmission" at biology news
High rates of HIV infection documented among young Nepalese girls sex-trafficked to India
...n cited by the World Bank as a risk factor for HIV transmission
in the region. Silverman is the lead author of the study published in the August 1, 2007, issue of the Journal of the American Medical Association (JAMA). He led a research team in reviewing the medical documentation and case records of 287 girls a...
Can the tonsils influence oral HIV transmission?
...sils may possess the necessary factors to act as a transmission
site for the spread of HIV. The related report by ... contact. Researchers have questioned whether such transmission
is facilitated by the tonsils, which contain high numbers of immune cells that may be easily accessi...
Detecting transmissibility of avian influenza virus in human households
...t well-defined study of H7N7 avian influenza virus transmission
in human households to estimate this transmissibil...fection clusters in human housholds may arise from transmission
from (i) animals (ii) humans who were infected by animals (primary human-to-human transmission), or ...
New model for autism suggests women carry the disorder and explains age as a risk factor
... of the high risk families. The data show that the transmission
pattern to boys in high risk families is often of a dominant pattern that may account for a quarter of autism. Although the data does not answer whether there is a gradation of lower risk, the model builds on recent CSHL findings that spontaneous mut...
Research study describes the role part of the brain plays in memory
...e prefrontal cortex plays a key role in the social transmission
of food preference. This research has helped learn...out how declarative memory functions is the social transmission
of food preference. In other species, this task is connected to the survival of the species and play...
Malaria -- Effective insecticide-repellent synergy against mosquito vectors
The mosquitoes responsible for malaria transmission
to humans belong to the Anopheles genus. One of the best known and most extensively studied is Anopheles gambiae, Africas principal malaria vector. The protection recommended by the World Health Organization for people at risk from this devastating d...
Tips from the Journals of the American Society for Microbiology
...hic and host ranges continue to expand. Currently transmission
to humans has been inefficient. Although there is...etection in nasal washes. The absence of secondary transmission
among ferrets housed together was attributed to minimal virus shedding. The effect of viral pathoge...
Clues to future evolution of HIV come from African green monkeys
...gm were most closely related revealed the probable transmission
route of SIV. The researchers hypothesize that t...ican green monkey species' ranges come in contact, transmission
probably happened during interspecies sexual encounters or fights. Wertheim pointed out that hybrid ...
Tomorrow's green nanofactories
...proving the efficiency of production, storage, and transmission
of energy to overcoming many of the obstacles to a hydrogen-based transportation system based on fuel-cell powered cars and trucks, according to Rejeski. ...
Soil particles found to boost prion's capacity to infect
...latively little is known about the routes of prion transmission
in animals, but the new Wisconsin study may help to resolve one puzzle: Oral transmission
of prions, says Aiken, tends not to be very efficient. "This is a dichotomy in our field, and mayb...
Key to tackling malaria may lie in bed nets for adults and older children
...ore vulnerable groups, too. Most human-to-mosquito transmission
originates from adults and children over five years of age, who constitute the bulk of the population and are more attractive to mosquitoes. "Insecticide-treated nets can protect not only the individuals and households that use them, but also memb...
Bright future for nano-sized light source
...phardt. In addition to demonstrating this scanning transmission
mode, we also demonstrated a fluorescence mode. When a nanowire light source was touched to a fluorescent bead, the bead emitted a distinct orange fluorescence at the contact point. When the nanowire was removed, the orange fluorescence was immedia...
Pairing nanoparticles with proteins
...and proteins to bind, transfer the solution onto a transmission
electron microscopy grid, and analyze the complexes using state-of-the-art electron microscopes." ...
New reovirus isolated
...The delay in symptom onset suggests human-to-human transmission
took place, Dr Wang says. According to the leader of the Malaysian team, Dr Kaw Bing Chua, bats were examined as a host, not only because previous unknown viruses have been found to have originated in bats, but because epidemiological tracing reve...
New amfAR research grants to optimize HIV treatment
... MGT of RT-SHIV infected macaques on HAART: Sexual transmission
remains the leading cause of new HIV infections, and many cases are due to the presence of HIV in semen. The extent to which the virus can survive and persist in semen when the patient is taking antiretroviral therapy is unclear. Dr. Xhilaga, the rec...
Revealed -- Mosquito genes that could be controlling the spread of killer viruses
...sts believe it plays a key role in controlling the transmission
of viruses that cause yellow and dengue fevers di...ing which of these key genes are implicated in the transmission
of viral diseases is an area of future research that could lead to new ways of combating these disea...
K-State biochemist contributes to article in Science magazine
...f what genes to study in their efforts to halt the transmission
of dangerous insect-spread diseases like malaria. "Insects can defend themselves against diseases," Kanost said. "Ordinarily, the immune system would kill a microorganism. When there's the right relationship, the diseases can avoid or disrupt the i...
MU maps course for improving pre-college science education
...s will be introduced to the role of vectors in the transmission
of avian influenza virus and how movement of the avian vectors and spread of the virus are monitored at state, regional and global levels. In the Mapping Cell Fate portion, students will learn how cells get instructions to maintain or change their pr...
Tips from the Journals of the American Society for Microbiology
...f the bacterium and researchers are now suggesting transmission
to aquatic vertebrates, such as amphibians, occurs when infected cattle defecate in water sources. Infected tadpoles could then shed the pathogen and infect cattle drinking the contaminated water as well as vegetables if the water is used for irriga...
News tips from the Journal of Neuroscience
.... Lisberger The probabilistic nature of synaptic transmission
and action potential firing produces variable (even unreliable) neuronal responses to identical sensory stimuli, yet the motor response can be extremely precise. In this weeks Journal , Medina and Lisberger focused on Purkinje cell (PC) activity in ...
1 2 3 4 5 6 7 8 9 10