Human papillomavirus 16 (HPV16), the virus responsible for approximately half of all cervical cancers, appears to be better at dodging the immune system than other HPV types, according to a large study of HIV-positive women in the July 16 issue of the Journal of the National Cancer Institute. The findings may help explain why HPV16 plays such a major role in causing cervical cancer in the general population.
Whereas other HPV types have a lower prevalence and incidence among women with stronger immune systems (in theory, the stronger the immune system, the better it is at fighting off infections), researchers detected similar levels of HPV16 in women with both weak and strong immune systems.
More than 30 types of HPV are known to infect the genital epithelium. HPV16 has been the strain most strongly associated with cervical cancer and its precursor lesions. What sets HPV16 apart from other HPV types has not been clear. A preliminary analysis of a study on HPV infection among women positive for HIV, the virus that causes AIDS, suggested that HPV16 may be less associated with immune status than other HPV types.
Linda Wang | EurekAlert!
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Tiny pores at a cell's entryway act as miniature bouncers, letting in some electrically charged atoms--ions--but blocking others. Operating as exquisitely sensitive filters, these "ion channels" play a critical role in biological functions such as muscle contraction and the firing of brain cells.
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The miniaturization of the current technology of storage media is hindered by fundamental limits of quantum mechanics. A new approach consists in using so-called spin-crossover molecules as the smallest possible storage unit. Similar to normal hard drives, these special molecules can save information via their magnetic state. A research team from Kiel University has now managed to successfully place a new class of spin-crossover molecules onto a surface and to improve the molecule’s storage capacity. The storage density of conventional hard drives could therefore theoretically be increased by more than one hundred fold. The study has been published in the scientific journal Nano Letters.
Over the past few years, the building blocks of storage media have gotten ever smaller. But further miniaturization of the current technology is hindered by...
With innovative experiments, researchers at the Helmholtz-Zentrums Geesthacht and the Technical University Hamburg unravel why tiny metallic structures are extremely strong
Light-weight and simultaneously strong – porous metallic nanomaterials promise interesting applications as, for instance, for future aeroplanes with enhanced...
An interdisciplinary group of researchers interfaced individual bacteria with a computer to build a hybrid bio-digital circuit - Study published in Nature Communications
Scientists at the Institute of Science and Technology Austria (IST Austria) have managed to control the behavior of individual bacteria by connecting them to a...
Physicists in the Laboratory for Attosecond Physics (run jointly by LMU Munich and the Max Planck Institute for Quantum Optics) have developed an attosecond electron microscope that allows them to visualize the dispersion of light in time and space, and observe the motions of electrons in atoms.
The most basic of all physical interactions in nature is that between light and matter. This interaction takes place in attosecond times (i.e. billionths of a...
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