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Tag: "strains" at biology news

One species, many genomes

...ch detailed differences distinguish the genomes of strains from the polar circle or the subtropics, from Amer...searchers compared the genetic material of 19 wild strains with that of the genome of the lab strain, which was sequenced in the year 2000. Using a very elabor...

A new plant-bacterial symbiotic mechanism promising for crop applications

...searchers sequenced (3) the genes of two bacterial strains of Bradyrhizobium, ORS278 and BTAi1, in order to find out their genetic make-up and identify the genes involved in this rather special form of symbiosis. These bacteria were found to have no nod genes, usually essential for nodulation. Bradyrhizobium...

Could fungal collection hold the key to new life-saving drugs?

...cal drugs to fight cancers, diseases and resistant strains of infections such as MRSA.” SIDR brings together scientists from different disciplines to focus on drug discovery. They have developed test systems to detect biological activity in samples of natural products that could lead to new medicinal prod...

Bacteria ferry nanoparticles into cells for early diagnosis, treatment

...ffectively for a wide range of needs." Harmless strains of bacteria could be used as vehicles, harnessing bacteria's natural ability to penetrate cells and their nuclei, Bashir said. "For gene therapy, a big obstacle has been finding ways to transport the therapeutic DNA molecule through the nuclear me...

454 sequencing identifies HIV drug resistance at early stage

...n the clinic may miss many low-level resistant HIV strains which can grow rapidly under drug selection pressu...t have the ability to suppress these resistant HIV strains which will lead to better clinical responses in patients.” While treatment of HIV has been largel...

Helping chlorine-eating bacteria clean up toxic waste

...less-toxic compounds behind. But D. ethenogenes strains work well at some sites and not so well at others,...id. Her laboratory will test the D. ethenogenes strains under a variety of different conditions, such as exposing them to different chlorinated compounds on...

Modified mushrooms may yield human drugs

...ogy to convert the vegetative tissue from mushroom strains stored in the freezer into vegetative seed. A crop from which drugs may be extracted could be ready in weeks," Dr. Romaine said. A mushroom-based biofactory also would not require expensive infrastructure set up by major drug companies, he added....

How plague-causing bacteria disarm host defense

...ase, including means to fight antibiotic-resistant strains of Yersinia that could be used in biological warfare, according to Navarro. The genus Yersinia includes three species of bacteria that are pathogenic to humans: Y. pestis is perhaps the most infamous, being responsible for the bubonic plague (al...

New study suggests potential for a broadly-protective HIV vaccine

...develop a vaccine that protects against the myriad strains of the HIV virus. HIV is extremely variable, so an...ced as a result of immunization neutralized all 48 strains of HIV-1 tested. The results are encouraging for vaccine development, because they showed that it is...

Resistant HIV quickly hides in infants' cells

...cent. However, the transmission of drug-resistant strains of HIV from mother to child is still a problem, an...ntrolling HIV viral load and NNRTI-resistant virus strains for all infants studied. These findings have important implications when it comes to choosing amo...

Gene malfunctions cause schizophrenia, depression symptoms in mice

... They found that, indeed, one of the mutant mouse strains exhibited behavioral abnormalities and memory defi...ychotic and antidepressant drugs on the two mutant strains "might provide clues to effective medications for these patient groups. Indeed, these mice could rep...

Survival of the rarest: Fruit flies shed light on the evolution of behavior

...a population that is already immune to more common strains of the virus. In this case, flies carry one of two versions of the foraging gene (either the "rover" or "sitter" type). Rover larvae move around more than sitter larvae while feeding and they are also more likely to explore new food patches than sitt...

New host species for avian influenza identified

...een the ecology and epidemiology of various global strains of the virus. An eight-year surveillance study, which included more than 36,000 wild migratory birds tested for low pathogenic avian influenza, details new data on host species, prevalence, and temporal and geographical variation of avian influenza ...

Sleepless for science: Flies show link between sleep, immune system in Stanford study

...ven better way would be to turn to established fly strains isolated decades ago that possess disruptions in their genes controlling circadian rhythm. In this case, these mutant flies could be kept under exactly the same light and temperature conditions as the normal flies. They looked at flies that were d...

Herpes infection may be symbiotic, help beat back some bacteria

...ing herpes infections. But they noted that several strains of herpes viruses found in much of the human popul... or in clinical trials for several disease-causing strains of herpes. Human herpes viruses include oral and genital herpes, the chickenpox virus, cytomegalo...

NIAID expands capability for influenza research and surveillance

...time information about circulating influenza virus strains and antiviral drug resistance—information that will be most critical during the early stages of an influenza pandemic. University of Minnesota, Minneapolis (principal investigator—Dr. Marguerite Pappaiaonou) These researchers will conduct intern...

In young mice, gregariousness seems to reside in the genes

...new study, which was conducted using two different strains of young mice, one gregarious in nature, the other...ng mice approach social situations." The inbred strains of mice used in the study, once weaned, display markedly different social aptitudes. Young mice from...

Investigating the measles virus as a tool to kill multiple myeloma

...evade destruction by the immune system. Laboratory strains of measles virus seek out this protein and use it as a receptor by which to enter the cancer cells. Upon entry, the virus spreads, infecting nearby tumor cells and fusing them together, increasing cancer cell death. This study differs from the ot...

Researchers find link between food odors and lifespan in fruit flies

...ing at Baylor, measured the lifespans of different strains of fruit flies in the presence and absence of food... The researchers also studied genetically altered strains of fruit flies to determine whether loss of olfactory function ?the sense of smell ?had an effect on...

Super-fermenting fungus genome sequenced

...rease ethanol production.?Jeffries said that yeast strains like Pichia have evolved to cope with the oxygen-limited environment rich in partially digested wood that is encountered in the gut of insects, from where the sequenced strain was originally isolated. FPL has a Cooperative Research and Development...

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