Exposure to secondhand cigarette smoke increases the risk of developing cervical tumors, according to researchers at the Johns Hopkins Bloomberg School of Public Health and School of Medicine. The researchers’ results also corroborated past studies that found an association between active cigarette smoking and cervical neoplasia—the growth of a tumor. The concept of the Hopkins study was the result of collaboration between several researchers supported by the Maryland Cigarette Restitution Fund. The study is published in the January 2005 issue of Obstetrics & Gynecology.
“An association between active cigarette smoking and cervical cancer has been noted in numerous studies, but less is known about the potential link between passive smoking and the development of cervical neoplasia. When these new data for cervical cancer are considered in light of similar results from previously published studies, our findings suggest that passive smoking may be firmly linked with cervical cancer,” said Anthony J. Alberg, PhD, MPH, senior author of the study and an assistant professor in the Bloomberg School of Public Health’s Department of Epidemiology. “Our study of two large cohorts found that women who lived with smokers had a 40 percent or greater risk of developing cervical neoplasia.”
The Hopkins researchers examined the personal cigarette smoking and household passive smoking exposures of two Washington County, Md. , cohort groups in 1963 and 1975. Questionnaires from the two groups, which totaled 51,173 women, were compared to the Washington County cancer registry. The researchers found a stronger association between passive smoking and an increased risk for developing cervical neoplasia in the earlier cohort study—a 2.1-fold increased risk of cervical neoplasia in 1963 and a 1.4-fold increased risk in 1975.
Kenna L. Lowe | EurekAlert!
Investigators may unlock mystery of how staph cells dodge the body's immune system
22.09.2017 | Cedars-Sinai Medical Center
Monitoring the heart's mitochondria to predict cardiac arrest?
21.09.2017 | Boston Children's Hospital
Plants and algae use the enzyme Rubisco to fix carbon dioxide, removing it from the atmosphere and converting it into biomass. Algae have figured out a way to increase the efficiency of carbon fixation. They gather most of their Rubisco into a ball-shaped microcompartment called the pyrenoid, which they flood with a high local concentration of carbon dioxide. A team of scientists at Princeton University, the Carnegie Institution for Science, Stanford University and the Max Plank Institute of Biochemistry have unravelled the mysteries of how the pyrenoid is assembled. These insights can help to engineer crops that remove more carbon dioxide from the atmosphere while producing more food.
A warming planet
Our brains house extremely complex neuronal circuits, whose detailed structures are still largely unknown. This is especially true for the so-called cerebral cortex of mammals, where among other things vision, thoughts or spatial orientation are being computed. Here the rules by which nerve cells are connected to each other are only partly understood. A team of scientists around Moritz Helmstaedter at the Frankfiurt Max Planck Institute for Brain Research and Helene Schmidt (Humboldt University in Berlin) have now discovered a surprisingly precise nerve cell connectivity pattern in the part of the cerebral cortex that is responsible for orienting the individual animal or human in space.
The researchers report online in Nature (Schmidt et al., 2017. Axonal synapse sorting in medial entorhinal cortex, DOI: 10.1038/nature24005) that synapses in...
Whispering gallery mode (WGM) resonators are used to make tiny micro-lasers, sensors, switches, routers and other devices. These tiny structures rely on a...
Using ultrafast flashes of laser and x-ray radiation, scientists at the Max Planck Institute of Quantum Optics (Garching, Germany) took snapshots of the briefest electron motion inside a solid material to date. The electron motion lasted only 750 billionths of the billionth of a second before it fainted, setting a new record of human capability to capture ultrafast processes inside solids!
When x-rays shine onto solid materials or large molecules, an electron is pushed away from its original place near the nucleus of the atom, leaving a hole...
For the first time, physicists have successfully imaged spiral magnetic ordering in a multiferroic material. These materials are considered highly promising candidates for future data storage media. The researchers were able to prove their findings using unique quantum sensors that were developed at Basel University and that can analyze electromagnetic fields on the nanometer scale. The results – obtained by scientists from the University of Basel’s Department of Physics, the Swiss Nanoscience Institute, the University of Montpellier and several laboratories from University Paris-Saclay – were recently published in the journal Nature.
Multiferroics are materials that simultaneously react to electric and magnetic fields. These two properties are rarely found together, and their combined...
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