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Tag: "subgroups" at biology news

Alcohol's effects on gene expression in the central nervous system

...nt of selective treatment strategies for different subgroups of alcoholics." McBride added that, despite recent advances, researchers need further developments in microarray technologies and bioinformatic approaches to better understand the complex neurobiological mechanisms underlying alcohol addiction. "Fut...

HIV vaccine trial breaks ground for future research

...heir follow-up visits. During analysis of various subgroups of the study population, a higher, though statistically insignificant, vaccine efficacy was found in the high-risk and the non-white groups. The authors suggested two plausible explanations, one for each group. Those with high-risk behavior may have ...

Flocking together: Study shows how animal groups find their way

...hers extended their experiments by introducing two subgroups with differing preferences about which direction t...n preferred by the bigger subgroup even if the two subgroups differed in size by only one member, demonstrating that groups can come to an accurate consensus dec...

Research shows smoking adds a decade to reproductive age of IVF patients

...ng by 2% for each additional year of age. "In all subgroups smokers had a lower delivery rate per treatment cycle than non-smokers," Dr Lintsen said. "The live birth rate for smokers was 28% lower than that of non-smokers. This was most marked in women who had no known cause for subfertility where the live bi...

Rodent social behavior encoded in junk DNA

...his microsatellite and autism in some families. As subgroups of autism spectrum disorders are characterized, a stronger connection may emerge. Far from being junk, the repetitive DNA sequences, which are highly prone to mutate rapidly, may ultimately exert their influence through complex interactions with oth...

Modifications render carbon nanotubes nontoxic

...endered soluble via the attachment of the chemical subgroups hydrogen sulfite, sodium sulfite and carboxylic acid. The cytotoxicity of undecorated SWNTs was 200 parts per billion, which compares to the level of 20 parts per billion identified last year for undecorated buckyballs. The modified nanotubes were ...

Study outlines genetic differences between potential pandemic influenza strains

...rganization has further classified genotype Z into subgroups called clades. In 2003 and 2004, clade 1 viruses were primarily responsible for outbreaks, including all infections in human, in Viet Nam, Cambodia and Thailand. In 2005 a second strain of H5N1 began causing disease in humans in Indonesia. Analys...

Genome changes tracked during multiple myeloma initiation, progression and treatment

...ification and deletion patterns define new disease subgroups of MM that are characterized by varied dysregulation of distinct cancer-relevant genes and can be correlated with different clinical outcomes. Importantly, several candidate genes identified in this study possess broad clinical and biological relevan...

Scientists discover new genetic subtypes of common blood cancer

...of Cancer Cell. These results "define new disease subgroups of multiple myeloma that can be correlated with di...further subdivisions, called k1 and k2 When these subgroups were checked against the records of the patients from whom the samples were taken, it showed that th...

Suicide risk does not increase when adults start using antidepressants, study finds

...ve in battling depression, he adds. "There may be subgroups of people who become more agitated or suicidal after taking these drugs, and those people should seek help from a doctor or therapist right away if that happens," says Simon. "But our study showed that on average, the risk of suicide actually goes do...

New HIV study identifies high-risk subgroups of adolescents

... HIV than others. The authors found that there are subgroups within a high-risk population in which patterns of risks like unprotected sex, mental health crises and substance abuse exist at the same time, and also vary by gender. “This study tells us that not all risky adolescents have the same risk behavior...

Technology for monitoring fetal oxygen during labor offers no apparent benefit

... researchers also compared Caesarean rates for two subgroups in the study, babies experiencing a disturbance in fetal heart rate and women experiencing dystocia. Again, the use of fetal oxygen saturation monitoring produced no statistically meaningful difference in Caesarean delivery for infants with a distur...

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

...This benefit was also seen across the board in all subgroups examined, including African-American men and older men aged 75-80 at diagnosis," added Armstrong. "However, as we summarized in the study, because observational data can never completely adjust for potential selection bias and confounding, our result...

Smoking ban dramatically reduces air pollution in Irish pubs

...oreover, sensory irritant symptoms improved in all subgroups after the ban, although the smoking workers benefited less. In an editorial on the research in the same issue of the journal, Fiona Godfrey, B.A., L.L.M. (Master of Laws), European Union Policy Advisor at the European Respiratory Society in Brusse...

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