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Tag: "removal" at biology news

Blood test may help signal tumor's remission, return in throat cancer patients

...f the head and neck are insidious because surgical removal of the tumor can severely impair a person’s ability to talk and to swallow,” said NIDCD Director, James F. Battey, Jr., M.D., Ph.D. “A blood test that enables doctors to closely monitor a patient’s rehabilitation while sparing the patient’s voice, sp...

Focused ultrasound relieves fibroid symptoms in women

...nter, fibroids are the primary reason for surgical removal of the uterus, accounting for approximately one-third of hysterectomies performed annually in the U.S. MRgFUS represents a noninvasive, outpatient alternative to hysterectomy. "This treatment is ideal for older women who have completed their fam...

Maggots rid patients of MRSA

...ssue and an increase in healthy, growing tissue on removal of the last larval application. In their second study, he and his team will compare larval treatment with antibacterial silver dressings and the biogun treatment, which uses ionized air to create superoxide radicals and eradicate bacteria. Prof...

Alien plants attack using 'resource conservation' as weapon, researchers say

...y involve early detection followed by a variety of removal methods, such as weed-whacking or introducing natural predators of the invasive plants, said study co-author Peter Vitousek, professor of biological sciences at Stanford. To determine which species warrant action, some government agencies in sever...

Simple home spit test to spot deadly pre-eclampsia

...s no cure, other than the delivery of the baby and removal of the faulty placenta, early detection and management of the problem can have a big impact on patient outcome. ...

Cancer tip -- Nanoparticles can damage DNA, increase cancer risk

...larger environment, as they are much too small for removal by conventional filtering techniques. When nanoparticles find their way into cancer cells, they can wreak havoc, according to Sara Pacheco, an undergraduate researcher at the University of Massachusetts. Yet very little is known about how they b...

New cigarette designs don't offer lower predicted cancer risks

... this makes promises of reduced harm based on such removal "speculative and unverified." "Despite all the years of research, we can only account for a small percentage of the carcinogenicity of smoking conventional cigarettes," said Pankow, Ph.D., professor in environmental and biomolecular systems at OHS...

Are scientists making progress in being able to regenerate bone tissue?

...ve pain, infection, and abnormal sensations at the removal site. An alternative is to use bone given by a donor—but such bone grafts from donors are less successful and there is a risk of transmitting viruses from the donor to the recipient. Given all these problems with bone grafts, scientists have attem...

Light-based probe 'sees' early cancers in first tests on human tissue

...imately enable doctors and their patients to avoid removal of tissue for biopsy, Wax said. In other instances, he added, fa/LCI could help physicians pinpoint suspicious cells during a traditional biopsy procedure, making it less likely for a cancerous lesion to escape detection. Wax and his former gradua...

Minuscule molecules pack a powerful punch

...for the action of miR-155. The consequences of removal of active miR-155 are altered activation of other genes, failure to mount an effective immune response, susceptibility to autoimmunity and susceptibility to infection. "This dramatic finding reflects a large amount of work by collaborating groups,...

Drug treatment improves learning in mice with Down syndrome symptoms, Stanford/Packard study shows

...ications. "This suggests that it’s not just the removal of the excess inhibition that allows learning to occur, but that we’re instead strengthening synapses through some type of long-lasting neuronal adaptation," said Garner. A key component of enduring neural change associated with memory is known as...

'Hidden-hero' microbes in soil, water may help naturally clean toxic sites

...at catalyze key chemical reactions for contaminant removal from groundwater," he said. "In fact, my FSU group recently isolated a new 'wonderbug,' a metal-reducing bacteria we named Geobacter FRC-32," Kostka added. "The genome of this organism now has been sequenced, and we will use that genome sequence a...

New UD technology removes viruses from drinking water

...o Kniel. "In 20 minutes, we found 99.99 percent removal of the viruses," Chiu said. "And we found that removal of the viruses got even better than that with time, to more than 99.999 percent." The elemental i...

Molecular motors and brakes work together in cells

...h molecular motors move protein packages for waste removal and nerve transmission. In the Cell study, the investigators, working with fission yeast cells, showed that stable end-to-end arrays of microtubules can be achieved by a balance between the sliding by a molecular motor called klp2p and the brakin...

How fish mend a broken heart

...injury but cannot regenerate after major damage or removal of structures. "It is believed that the capacity for regeneration is an ancestral condition that has occasionally been lost in the course of vertebrate evolution." Poss said. "Thus, most biologists suspect that the machinery to optimize regeneratio...

Detailed 3-D image catches a key regulator of neural stem cell differentiation in action

...olymerase the go-ahead to transcribe genes - while removal of those phosphates by phosphatases like Scp1 turns out the light, effectively stopping RNA polymerase in its tracks. Noel and postdoctoral fellow Yan Zhang, Ph.D, analyzed the crystal structure of Scp1 and RNA polymerase together and obtained a ...

Carnegie Mellon scientists use 'green' approach to transform plastics manufacturing

... for a biomedical stent -- absolutely requires the removal of residual catalyst, companies will now have much less of it to take out, significantly lowering removal costs, according to the authors. The new ATRP technique also allows for production of higher mole...

Older men treated for early prostate cancer live longer than those who are not

...options, such as a radical prostatectomy (surgical removal of the prostate) and radiation therapy, controversial with unpredictable outcomes. Often, recently diagnosed men of this group were advised to just "watch and wait" to see how their situation progressed. "For this study we looked back over the exi...

The first tree genome is published: Poplar holds promise as renewable bioenergy resource

...l process provides opportunities to improve carbon removal from the air by producing trees that effectively shuttle and store more carbon below ground in their roots and the soil. Moreover, bioenergy crops re-absorb carbon dioxide emitted when biofuels are consumed, creating a cycle that is essentially carbo...

Buildup of damaged DNA in cells drives aging

...ch codes for part of a key enzyme required for the removal of DNA damage. The XPF portion of the enzyme harbors the DNA-cutting activity; whereas a second portion, known as ERCC1, is essential for the enzyme to bind to the damaged DNA. Mutations in either XPF or ERCC1 lead to reduced activity of this key DNA...

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