Discover the most talked about and latest scientific content & concepts.

Concept: Inheritance


To determine the proportion of avoidable deaths (due to acts of omission and commission) in acute hospital trusts in England and to determine the association with the trust’s hospital-wide standardised mortality ratio assessed using the two commonly used methods - the hospital standardised mortality ratio (HSMR) and the summary hospital level mortality indicator (SHMI).

Concepts: Epidemiology, Medical statistics, Actuarial science, Ratio, Statistical terminology, Trust, Inheritance, Standardized mortality ratio


Many immigrants in the United States are working-age taxpayers; few are elderly beneficiaries of Medicare. This demographic profile suggests that immigrants may be disproportionately subsidizing the Medicare Trust Fund, which supports payments to hospitals and institutions under Medicare Part A. For immigrants and others, we tabulated Trust Fund contributions and withdrawals (that is, Trust Fund expenditures on their behalf) using multiple years of data from the Current Population Survey and the Medical Expenditure Panel Survey. In 2009 immigrants made 14.7 percent of Trust Fund contributions but accounted for only 7.9 percent of its expenditures-a net surplus of $13.8 billion. In contrast, US-born people generated a $30.9 billion deficit. Immigrants generated surpluses of $11.1-$17.2 billion per year between 2002 and 2009, resulting in a cumulative surplus of $115.2 billion. Most of the surplus from immigrants was contributed by noncitizens and was a result of the high proportion of working-age taxpayers in this group. Policies that restrict immigration may deplete Medicare’s financial resources.

Concepts: Demography, Population, United States, Immigration, Immigration to the United States, Finance, Beneficiary, Inheritance


Huntington’s Disease (HD) is caused by inheritance of a single disease-length allele harboring an expanded CAG repeat, which continues to expand in somatic tissues with age. The inherited disease allele expresses a toxic protein, and whether further somatic expansion adds to toxicity is unknown. We have created an HD mouse model that resolves the effects of the inherited and somatic expansions. We show here that suppressing somatic expansion substantially delays the onset of disease in littermates that inherit the same disease-length allele. Furthermore, a pharmacological inhibitor, XJB-5-131, inhibits the lengthening of the repeat tracks, and correlates with rescue of motor decline in these animals. The results provide evidence that pharmacological approaches to offset disease progression are possible.

Concepts: Gene, Genetics, Genetic disorder, Death, Enzyme inhibitor, Genetic disorders, Huntington's disease, Inheritance


This study assessed the odds of dying in hospital associated with enrollment in Medicare Advantage (M-A) versus conventional Medicare Fee-for-Service (M-FFS). Data were derived from the 2008 and 2010 waves of the Health and Retirement Study ( n = 1,030). The sample consisted of elderly Medicare beneficiaries who died in 2008-2010 (34% died in hospital, and 66% died at home, in long-term senior care, a hospice facility, or other setting). Logistic regression estimated the odds of dying in hospital for those continuously enrolled in M-A from 2008 until death compared to those continuously enrolled in M-FFS and those switching between the two plans. Results indicate that decedents continuously enrolled in M-A had 43% lower odds of dying in hospital compared to those continuously enrolled in M-FFS. Financial incentives in M-A contracts may reduce the odds of dying in hospital.

Concepts: Health insurance, Death, Demography, Gerontology, Old age, Ageing, Inheritance


The estimated number of in-hospitals deaths due to adverse events is often different when using data from deceased patients compared with that of a population experiencing adverse events.

Concepts: Statistics, Death, Demography, Inheritance


Since Chaney’s report, the range of global warming projections in response to a doubling of CO2-from 1.5 °C to 4.5 °C or greater -remains largely unscathed by the onslaught of new scientific insights. Conventional thinking regards inter-model differences in climate feedbacks as the sole cause of the warming projection spread (WPS). Our findings shed new light on this issue indicating that climate feedbacks inherit diversity from the model control climate, besides the models' intrinsic climate feedback diversity that is independent of the control climate state. Regulated by the control climate ice coverage, models with greater (lesser) ice coverage generally possess a colder (warmer) and drier (moister) climate, exhibit a stronger (weaker) ice-albedo feedback, and experience greater (weaker) warming. The water vapor feedback also inherits diversity from the control climate but in an opposite way: a colder (warmer) climate generally possesses a weaker (stronger) water vapor feedback, yielding a weaker (stronger) warming. These inherited traits influence the warming response in opposing manners, resulting in a weaker correlation between the WPS and control climate diversity. Our study indicates that a better understanding of the diversity amongst climate model mean states may help to narrow down the range of global warming projections.

Concepts: Water, Precipitation, Climate, Climate change, Water vapor, Feedback, Vapor, Inheritance


Orthostatic intolerance is typically thought to be sporadic and attributed to cerebral autonomic dysfunction. We sought to identify families with inherited autonomic dysfunction manifest as symptomatic orthostatic intolerance to characterize mode of inheritance and clinical features.

Concepts: Orthostatic hypotension, Family therapy, Postural orthostatic tachycardia syndrome, Orthostatic intolerance, Inheritance


To illustrate the burden of inherited disease on donor-conceived offspring based on mode of inheritance and to provide guidance on methods of risk reduction.

Concepts: Risk, Risk management, Inheritance


Bicuspid aortic valve (BAV) is known to exhibit familial inheritance and is associated with aortopathy and altered aortic haemodynamics. However, it remains unclear whether BAV-related aortopathy can be inherited independently of valve morphology.

Concepts: Hematology, Left ventricle, Aortic valve, Aortic insufficiency, Bicuspid aortic valve, Inheritance


We propose a new concept, the synthesis of dendrimers intrinsically composed in alternation of building blocks pertaining to two known families of dendrimers, namely the phosphorhydrazone dendrimers and the triazine-piperazine dendrimers. These “mixed” dendrimers with layered controlled architecture have inherited their easy 31P NMR characterization and their thermal stability from the phosphorhydrazone family, and their decreased solubility from the triazine-piperazine family. However, they have also their own and original characteristics. Both parent families are white powders, whereas the mixed dendrimers are yellow, orange, or red powders, depending on the generation. DFT calculations were carried out on model dendrons to understand these special color features. Remarkably, these dendrimers incorporating redox active organic entities allow for the first time the monitoring of the growth of an organic dendrimer by electrochemistry while highlighting an even-odd generation behavior.

Concepts: Family, Redox, Color, Red, White, Standard Model, Dendrimer, Inheritance