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Tag: "division" at biology news

Genetic testing still smart choice, despite uncertainties

... but to natural errors occurring during early cell division in the embryo." Extracting test cells before the embryo divides a third time could reduce the number of misdiagnoses because of mosaicism, the UF researchers suggest. Improving culture conditions could help too, Kovalinskaia said. But the small mar...

FSU biologists describe key role of signal-transcribing gene during cell cycle

...n) to the specialized endocycle, where cells cease division but still replicate their DNA. But if Notch-to-Cut communication and Cut transcription were dysfunctional, so, too, was the cell cycle. In that case, the essential switch from mitosis to the endocycle failed, resulting in unregulated growth. Accord...

Double trouble: Cells with duplicate genomes can trigger tumors

Abnormal cell division that yields cells with an extra set of chromosomes...value" cells are produced by random errors in cell division that occur with unknown frequency. The generation of these genetically unstable cells appears to be ...

A new link between stem cells and tumors

...iates. This is what happens with neuroblasts. Cell division creates one large neuroblast and a smaller cell that can become part of a nerve. This process is controlled by events that happen prior to division. The parent cell becomes asymmetrical: it collects a set of special molecules, including Prospero and ...

Normal chromosome ends elicit a limited DNA damage response

...whole chromosomes end-to-end. During the next cell division the sorting mechanism, which ensures that each daughter cell receives a full complement of chromosomes would inevitably rip the fused chromosomes apart. "Such fusion breakage cycles scramble the genome over time, and cause genome instability, which...

New vaccine platform may fight infections with causes from influenza to bioterrorism

...urnal of Clinical Investigation, Jay K. Kolls, MD, division chief of Pediatric Pulmonology, Laboratory of Lung Immunology and Host Defense at Children's Hospital of Pittsburgh, and professor of Pediatrics and Immunology at the University of Pittsburgh School of Medicine, and co-authors describe how their vacc...

Stem cells' electric abilities might help their safe clinical use

... genetic strategies that suppress undesirable cell division after transplantation, not only for ESCs and their derivatives, but perhaps for adult stem cells as well." Li adds that much more work is necessary to know for sure. ...

Regenerating worms help elucidate stem cell biology

...and the many environmental cues that influence the division and differentiation of their neoblasts, Sánchez Al...hat without piwi, the daughter cells from this division failed to differentiate into a specialized cell once they'd reached their destination. Based on thei...

UK is first to administer new anti-clotting technology

...ations." "The research capacity of the cardiology division at UK has skyrocketed in the last year. Millions o..., professor and vice chair of medicine, and chief, division of cardiovascular medicine, UK College of Medicine, and co-director of the UK Gill Heart Institute. ...

Master regulatory gene found that guides fate of blood-producing stem cells

...egulatory gene for multiple, if not all, stem-cell division programs." NF-Ya would be considered the master regulatory gene since it activates multiple HSC regulatory genes and promotes HSC self-renewal. Practically, the researchers' goal is to find a way to control stem-cell fate by biochemically turning NF...

Plant genes identified that can form basis for crops better adapted to environmental conditions

...e cell cycle − the process that directs cell division − be under optimal control. Although the precise factors that underlie these processes and how they work together are virtually unknown, it has been quite clear that an enormous number of factors are involved. Tom Beeckman and his team in the...

Anthrax stops body from fighting back, study shows

...-needed neutrophils, said Dr. Frederick Southwick, division chief of infectious diseases at the UF College of Medicine and the lead author of the paper. "If your neutrophils work normally, you might be able to shut down thisinfection," said Southwick, who worked on the study with a team of UF researchers and...

Amphetamines reverse Parkinson's disease symptoms in mice

...ation from The Long Island Community Foundation, a division of The New York Community Trust. "This model is exciting because it allows us to examine the potential contribution of systems other than dopamine to Parkinson's disease," said Caron. "We may be able to discover avenues for treatment that had never ...

Prescription pain patch abuse blamed for increase in deaths

...ith UF's McKnight Brain Institute and chief of the division of addiction medicine, has been focused on the use and abuse of prescription drugs. In the past few years his team has seen increased abuse of methadone, and now fentanyl. "Based on our study we're recommending that physicians better educate their p...

Stem cells bring fast direct improvement, without differentiation, in acute renal failure

...enal injury and cell-death scores, and higher cell division indices than vehicle-treated control animals," the paper stated. Indeed, administration after 24 hours of more severe ARF had an even greater beneficial effect. Based on utilization of several genomic and nongenomic cell-tagging techniques, the rese...

Sugar helps control cell division

... dogma for decades has been that the cycle of cell division is controlled by the appearance and disappearance ...with a chemical, the cell cycle lengthens and cell division doesn't happen properly. Clearly the enzyme is there for a reason." But understanding what the suga...

A Father’s Day Gift: Free DNA Paternity Testing

...r how to regulate deep seabed bioprospecting. This division stems from limited knowledge about the environmental impacts and economic potential of deep seabed bioprospecting, combined with a strong sensitivity to countries' freedoms in international areas." "Ethical concerns have been raised with regard to t...

Clear rules needed to govern deep sea bioprospecting: UNU

...r how to regulate deep seabed bioprospecting. This division stems from limited knowledge about the environmental impacts and economic potential of deep seabed bioprospecting, combined with a strong sensitivity to countries' freedoms in international areas." "Ethical concerns have been raised with regard to t...

Hunt for human genes involved in cell division under way

... genes, one-by-one, to find those involved in cell division (mitosis) and to answer fundamental questions of how cell division is regulated. The scientists will use a method called 'RNA interference (RNAi)' where chemically sy...

Discovery suggests why stem cells run through stop signs

...erial called microRNAs are necessary for stem cell division to take place, suggesting that microRNAs shut off the signals that stop cell division in most other cells. The findings were published online this week by the journal Nature. In the pap...

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