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Dormancy in Medical News

E. coli persists against antibiotics through HipA-induced dormancy

HOUSTON - Bacteria hunker down and survive antibiotic attack when a protein flips a chemical switch that throws them into a dormant state until treatment abates, researchers at The University of Texas M. D. Anderson Cancer Center report in the Jan.16 edition of Science . "For antibiotics to wo...

New Hampshire Cosmetic Plastic Surgeon Discusses Silicone Breast Implants after Breast Augmentation becomes No. 1 Cosmetic Surgery Procedure

... Silicone breast implants went through a long period of relative dormancy after a series of lawsuits prompted their removal from the market. Now, two years after the U.S. Food and Drug Administration approved them for use in...

Stem cells: Deathly awakening by interferon

...sts headed by Professor Andreas Trumpp of DKFZ. dormancy is an important protection mechanism of stem cells...appen primarily during cell division. In addition, dormancy helps them escape attacks of many cytotoxins, whic...interferon-alpha, we might be able to wake up from dormancy not only hematopoietic stem cells but also tumor s...

Dormant cancer cells rely on cellular self-cannibalization to survive

...rategy for eliminating dormant ovarian cancer cells and curing more patients. Whether cancer cells die an autophagic death, remain dormant or exit dormancy to grow again depends on the balance between ARHI's tumor-suppressing activity and the anti-autophagic and proliferative activity of these environment...

Dormant stem cells for emergencies

...covered a group of stem cells in mouse bone marrow that remain in a kind of dormancy almost throughout life. Trumpp, who has been head of the Cell Biology Divis...han about 15 percent of the whole stem cell population, remain in a kind of dormancy with very low metabolism. In contrast, stem cells of the larger group, the ...

New Hope Against the Cold Sore Virus

... finally offering them the possibility of a cure. Scientists at Duke University say they've unlocked the mystery of how herpes simplex 1 slips into dormancy and stays dormant -- evading the drugs that might otherwise wipe it out. Buoyed by that finding, the same team is testing an experimental agent tha...

Hibernation-like behavior in Antarctic fish -- on ice for winter

...nation is a pretty complex subject. Fish are generally incapable of suppressing their metabolic rate independently of temperature. Therefore, winter dormancy in fish is typically directly proportional to decreasing water temperatures. The interesting thing about these Antarctic cod is that their metabolic ...

Immune system can drive cancers into dormant state

...ay in the advance online publication of Nature. "Thanks to the animal model we have developed, scientists can now reproduce this condition of tumor dormancy in the laboratory and look directly at cancer cells being held in check by the immune system," says co-author Robert Schreiber, Ph.D., Alumni Professo...

Experiments In Outer Space To Determine single Cell Survival

...biology Jeff Brinker. Groups of such long-lived cells may also serve as models to investigate how tuberculosis bacteria survive long periods of dormancy within human bodies. En masse, they also may be used to generate signals to repel harmful bacteria from the surfaces of surgical tools like cat...

Prostratin- Drug to eradicate HIV

...to researchers at Peterson Medical College, a strategy was developed - using a natural compound to flush the Human Immunodeficiency Virus (HIV) out of dormancy in the cellular reservoirs of the body. Prostratin, an agent,comes from a Samoan rainforest tree, and appears to stimulate the virus, which causes AID...
Dormancy in Biological News

Warming climate threatens California fruit and nut production

...th reduced chilling requirements and new management strategies for breaking dormancy in years of insufficient winter chill," Luedeling said. About winter chil...dormant state that lasts through late fall and winter. In order to break dormancy and resume growth, the trees must receive a certain amount of winter chill,...

Super-sleepers could help super-sizers!

...bolism of their cells changes radically during the dormancy period allowing the frogs to maximise the use of t...power plants" of the cell, was measured during the dormancy period, it was found to be significantly higher co...it short periods of spontaneous arousal during the dormancy period, in some cases even daily. Burrowing frogs,...

Pathway found that lets mosquitoes fatten up, slow down for winter

...ificial day-length environments to either impose a dormancy cycle or to prevent their shift to diapause. Some ...as suggested the insulin signaling pathway affects dormancy in the roundworm and fruit fly. These are very...athway used by lots of organisms to regulate their dormancy period, Denlinger said. Warmer temperatures are...

Mechanism for regulation of growth and differentiation of adult muscle stem cells is revealed

...scle regeneration, which is a natural response to injury and disease, environmental cues cause adult muscle stem cells (satellite cells) to shift from dormancy to actively building new muscle tissue. Although the signaling pathways controlling muscle regeneration are fairly well known, how these signals lead...

Stowers Institute's Hawley Lab identifies factors responsible for restart of meiotic cycle

...s appear in the Dec. 4, 2007 issue of PLoS Biology. The long period of dormancy that interrupts the process that parses out the correct number of chromosom...ded state until the female reaches sexual maturity. Extended periods of dormancy may last many years in organisms like humans, but shorter periods of meioti...

Mosquito genes explain response to climate change

...owed that the mosquito has changed genetically in response to recent, rapid climate change and now uses shorter, more southern day lengths to initiate dormancy in a landmark study that appeared in the Proceedings of the National Academy of Sciences (Dec. 4, 2001). The new study ?funded by the National S...

Scientists discover that ancient genes dictate flowering, fall bud set

...m northern latitudes compared to those from southern latitudes. Because winter arrives earlier at northern latitudes, trees need to set bud and enter dormancy earlier than trees at more southern latitudes. The article concludes that the CO and FT genetic pathway is key to understanding adaptation to clim...

Where have all the butterflies gone?

.... This winter's weather conditions may have a lot to do with the drop in numbers. The early winter was mild, with not enough cold to end the winter dormancy or "diapause" of most butterflies, so they did not emerge to take advantage of early warm weather in February. Then March turned cold and wet, wiping ...

Genetic snooze button governs timing of spring flowers

... many plants that grow in temperate climates. "Bud dormancy is not broken until the plant has 'counted' a suff...-regulated processes such as the regulation of bud dormancy in trees. Bud dormancy may be similar to vernalization or, the Wisconsin ...

Sandia work launched on space shuttle shows live cells influence growth of nanostructures

...crobiology Jeff Brinker. Groups of such long-lived cells may also serve as models to investigate how tuberculosis bacteria survive long periods of dormancy within human bodies. En masse, they also may be used to generate signals to repel harmful bacteria from the surfaces of surgical tools like cathet...
Dormancy in Biological Dictionary

Dormancy

Dormancy is a period in an organism's life cycle when growth, development, and (in animals) physical activity is temporarily suspended. This minimizes metabolic activity and therefore helps an organism to conserve energy. Dormancy tends to be closely associated with... (Redirected from S...

Zygospore

...ops thick, resistant walls and enters a period of dormancy ... Zygospore's - Definition of Zygospore's...ops thick, resistant walls and enters a period of dormancy before ... Information about zygospore in th...ops thick, resistant walls and enters a period of dormancy ... Pronunciation of zygospore . zygospore ...

Megasporangium

...The seed coat's most important function is to provide _.a) a non-stressful environment for the megasporangium (b) the means for dispersal (c) dormancy (d) a ... - ovary - endospern - megasporangium - megagametophyte more then one possible answer pleasr only answer iif u are 100% sure thanks...
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