Sentences with phrase «by retroviruses»

He extracted fluids from the spinal columns of MS patients and tested for an enzyme, called reverse transcriptase, that is carried by all retroviruses.

So far, «in my view, his most important achievement [s] were his initial demonstration and further exploration of the centrosome as a critical hub on the route followed by retroviruses between the plasma membrane and the nucleus.

In one such study by Ronald Evans and colleagues, the gene for rat growth hormone is stably inserted into mouse cells by a retrovirus.

This is the first example of a chaperonin being required by a retrovirus.

Drawing upon the cell culture expertise of Noriyoshi Sakai, Ph.D., and Kayoko Kurita, of Fukui Prefectural University, the Japanese - U.S. team developed a system that enables immature sperm cells, or spermatagonia, taken from male zebrafish to survive long enough in vitro that they can receive foreign genes inserted by a retrovirus.

Pluripotent stem cells can be generated from adult mouse - tail tip fibroblasts and adult human fibroblasts by the retrovirus - mediated transfection of four transcription factors, Oct3 / 4, Sox2, c - Myc, and Klf4.

It is caused by a retrovirus that is spread from cat to cat through prolonged contact, bites and from parent to offspring.

It is caused by a retrovirus (FIV is also caused by a retrovirus) that is spread from cat to cat by saliva and respiratory secretions.

Feline Leukemia (FeLV) is similar to Feline Immunodeficiency Virus (FIV) in that it is caused by a retrovirus, is transmissible between cats, and results in suppression of the immune system.

Not exact matches

Tangible proof can be found by studying vestigial features, ebryonic development, biogeography, DNA sequencing, pseudogenes, endogenous retroviruses, labratory direct examination of natural selection in action in E-Coli bacteria, lactose intolerance in humans, the peppered moth's colour change in reaction to industrial pollution, radiotrophic fungi at Chernobyl... all of these things add to the modern evolutionary synthesis.

Seeking one mechanism to explain the induction of cancer by many different agents, Huebner and Todaro had suggested that retrovirus oncogenes are a part of the genetic baggage of all cells, perhaps acquired through viral infection early in evolution.

This is a model of a retrovirus capsid hexamer, showing the conserved beta - hairpin domains common to most kinds of retroviruses (circled) and a pocket containing additional sites thought to affect recognition of lentiviruses by the TRIM5 anti-viral defense proteins of old world monkeys (arrow).

Because of its unique specificity for retroviruses (whereas other restriction factors often have broader antiviral activity), the researchers hypothesized that the evolution of TRIM5 in African monkeys should reveal selection by lentiviruses closely related to modern SIVs.

The presence of antibodies to lymphadenopathy - associated retrovirus (LAV) was determined by a radioimmunoprecipitation assay and by an enzyme - linked immunosorbent solid assay of sera from Zairian patients with the acquired immune deficiency syndrome (AIDS) in 1983.

The virology experts from the University's Vet School have carried out an investigation into the cancer outbreak which was caused by the gibbon ape leukemia retrovirus (GALV).

One perplexing problem, however, is that three out of 13 of the iPS cell lines created by Hochedlinger's team had a complete extra set of chromosomes, which has not been seen with iPS cells made using retroviruses.

But in a Frankenstein - like maneuver, French molecular geneticists led by Thierry Heidmann of the Gustave - Roussy Institute have now reassembled one of these long - lost retroviruses into its original infectious form.

Now a team led by Robin Weiss of London's Institute of Cancer Research reports that the «PK» porcine endogenous retrovirus, which does not appear to harm pigs, can replicate in mink and human cells.

The prostate cancer discovery, described last month by Ila Singh, an associate professor of pathology at the University of Utah in Salt Lake City, et al. in the Proceedings of the National Academy of Sciences (PNAS), along with a traditionally high incidence of cancer in CFS patients, got Mikovits and her team thinking: Would they find the same retrovirus in people with CFS?

A University of Alabama at Birmingham team led by Jamil Saad, Ph.D., has solved the last unknown protein structure of HIV - 1, the retrovirus that can cause AIDS.

These findings were presented by one of the co-principal investigators, Fatorma Bolay, Ph.D., director of the Liberian Institute for Biomedical Research, this evening at the Conference on Retroviruses and Opportunistic Infections in Boston.

In nature, RNAi acts as a defence mechanism to protect cells against retroviruses, but it has been cleverly adapted by researchers.

The most cogent answer is this: Creating transgenic people by sending a retrovirus into healthy brains will never be allowed.

Lo was encouraged by the variants because retroviruses are extremely mutable pathogens that change their gene sequences again and again in response to immune system efforts to kill them.

One approach, she says, would be to engineer the retroviruses to produce integrases that resemble those made by Ty3.

AIDS is disease caused by HIV, a retrovirus that utilizes reverse transcription, during which RNA is converted to DNA.

«We were surprised to get a result that suggests that vampire bats may not be the reservoir for this retrovirus but might have been infected independently of monkeys and rats by a yet undiscovered reservoir,» says Marina Escalera, leading author of the study.

Initial results from PREVAIL III were presented this evening at the Conference on Retroviruses and Opportunistic Infections in Boston by study co-principal investigator Mosoka Fallah, Ph.D., M.P.H., with the Liberian Ministry of Health.

Retroviruses spread by taking over your cell's DNA.

The slight loss in bone mineral density associated with HIV pre-exposure prophylaxis (PrEP) antiretroviral use is reversible in young adult patients who stop taking the drugs, according to findings presented by researchers today at the 23rd Conference on Retroviruses and Opportunistic Infections (CROI) in Boston.

But even if XMRV is not a threat to human health, the fact that a retrovirus that can readily infect human cells was apparently generated by chance in the lab raises some interesting and potentially troubling issues.

Retroviruses, including HIV, are known to be awakened by inflammation — possibly the result of infection, cigarette smoke, or pollutants in drinking water.

So they used an experiment, similar to Perron's, that would detect any retrovirus (by finding sequences encoding reverse transcriptase enzyme)-- even if it was one that had never been catalogued before.

A new study published online by Science links chronic fatigue syndrome to a possibly contagious rodent retrovirus, XMRV, which has also been implicated in an aggressive form of prostate cancer.

Some researchers have argued that endogenised retroviruses may be key to how species diverge from each other, by activating different body plans and gene networks that may give one individual an edge over other members of the species.

As if chronic fatigue syndrome (CFS) hasn't caused enough brawls, a new study published online by Science links the disease to a possibly contagious rodent retrovirus, XMRV, which has also been implicated in an aggressive form of prostate cancer.

By the beginning of the 1990s, researchers were just beginning to understand retroviruses — those like HIV that reproduce by inserting their DNA into a host's genomBy the beginning of the 1990s, researchers were just beginning to understand retroviruses — those like HIV that reproduce by inserting their DNA into a host's genomby inserting their DNA into a host's genome.

«This study demonstrates the powerful resource presented by the genomic ERV record to better understand host - retrovirus coevolution», says Patric Jern, faculty at SciLifeLab and Research fellow at the Department of Medical Biochemistry and Microbiology, Uppsala University, who headed the study.

While retroviruses generally only infect dividing cells (because their access to the host genome is thought to rely on the breakdown of the nuclear envelope that occurs in mitosis [Roe et al., 1993]-RRB-, lentiviruses are a genus of the retroviral family that can infect non-dividing cells (possibly through the use of nuclear localization signals by the viral components [Bukrinsky et al., 1992]-RRB-, and thus, offer an advantage when transducing certain cell types that exhibit limited cell division (e.g., neurons).

A study from Dr. Dusty Miller's laboratory indicates that Jaagsiekte sheep retrovirus (JSRV) infects both sheep and human cells cultured outside the body and does so by attaching to a receptor on the surface of lung cells.

In the new study, a team led by Harvard University's George Church — one of the pioneers of the CRISPR technique — used gene editing to remove all the copies of porcine endogenous retroviruses (or PERVs) from their pig cells» DNA.

Genetic reprogramming to a pluripotent state of mouse somatic cells was first achieved by ectopic expression of four factors (Oct4, Sox2, Klf4 and c - Myc) using retroviruses [1].

A recent study by Lombardi et al. [1] describing a gamma - retrovirus infection in 68 of 101 chronic fatigue syndrome (CFS) patients was notable not only for its claim of a new viral aetiology of a hitherto controversial disease, but also for the fact that proviral DNA could be amplified from the peripheral blood mononuclear cells (PBMC) of 3.75 % (8/218) of the healthy controls.

Q: In Darwin's Radio, you wrote about the evolution of a new human species that is triggered by an HERV, or Human Endogenous Retrovirus — which, if I understand correctly, is a kind of ancient virus that has entered into human DNA and persisted there in a dormant state for hundreds of thousands, if not millions, of years.

Marley's Cat Tales is a cat rescue dedicated to stopping the cycle of retroviruses like FeLV (feline leukemia) and FIV (feline immunodeficiency virus) by educating the public and promoting awareness.

The WITNESSFeLV - FIV Test Kit is indicated for use when history and / or clinical signs may suggest an infection by feline retroviruses in at - risk populations.

Notes: Retroviruses are unstable, live for only minutes outside the cat's body, and are readily destroyed by most disinfectants.

Feline AIDS — Also caused by a feline retrovirus, we can diagnose this from a basic blood screening and provide necessary treatment.

Retrovirus - positive cats should be evaluated by a veterinarian twice a year.

A retrovirus spreads by inserting something called an enzyme into healthy cells.