Carotid intima-medial thickness measured on multiple ultrasound frames: evaluation of a DICOM-based software system

United Kingdo

Interactions between Natural Populations of Human and Rodent Schistosomes in the Lake Victoria Region of Kenya: A Molecular Epidemiological Approach

One of the world's most prevalent neglected diseases is schistosomiasis, which infects approximately 200 million people worldwide. Schistosoma mansoni is transmitted to humans by skin penetration by free-living larvae that develop in freshwater snails. The origin of this species is East Africa, where it coexists with its sister species, S. rodhaini. Interactions between these species potentially influence their epidemiology, ecology, and evolutionary biology, because they infect the same species of hosts and can hybridize. Over two years, we examined their distribution in Kenya to determine their degree of overlap geographically, within snail hosts, and in the water column as infective stages. Both species were spatially and temporally patchy, although S. mansoni was eight times more common than S. rodhaini. Both species overlap in the time of day they were present in the water column, which increases the potential for the species to coinfect the same host and interbreed. Peak infective time for S. mansoni was midday and dawn and dusk for S. rodhaini. Three snails were coinfected, which was more common than expected by chance. These findings indicate a lack of obvious isolating mechanisms to prevent hybridization, raising the intriguing question of how the two species retain separate identities

Long-term decline of the Amazon carbon sink

Atmospheric carbon dioxide records indicate that the land surface has acted as a strong global carbon sink over recent decades1, 2, with a substantial fraction of this sink probably located in the tropics3, particularly in the Amazon4. Nevertheless, it is unclear how the terrestrial carbon sink will evolve as climate and atmospheric composition continue to change. Here we analyse the historical evolution of the biomass dynamics of the Amazon rainforest over three decades using a distributed network of 321 plots. While this analysis confirms that Amazon forests have acted as a long-term net biomass sink, we find a long-term decreasing trend of carbon accumulation. Rates of net increase in above-ground biomass declined by one-third during the past decade compared to the 1990s. This is a consequence of growth rate increases levelling off recently, while biomass mortality persistently increased throughout, leading to a shortening of carbon residence times. Potential drivers for the mortality increase include greater climate variability, and feedbacks of faster growth on mortality, resulting in shortened tree longevity5. The observed decline of the Amazon sink diverges markedly from the recent increase in terrestrial carbon uptake at the global scale1, 2, and is contrary to expectations based on models6

Pregnancy planning and lifestyle prior to conception and during early pregnancy among Danish women

Objective To investigate the extent to which Danish women attending antenatal care plan their pregnancies and to determine the association between pregnancy planning and the intake of folic acid, alcohol consumption and smoking habits prior to conception and before the 16th week of gestation. Methods A cross-sectional survey of 258 women. Main outcome measures: intake of folic acid, alcohol consumption and smoking. Pregnancy planning was assessed by the London Measure of Unplanned Pregnancy (LMUP) and the five graded Swedish Pregnancy Planning Scale. Results Most (77%) of the participants reported that their pregnancies were very or fairly well planned. Higher median LMUP scores were observed in women taking folic acid (p < 0.001), in those consuming less alcohol, and in women who stopped smoking prior to pregnancy (p = 0.043). However, 43% of the respondents with a high degree of pregnancy planning and 98% of those with a low degree of planning had not taken folic acid prior to pregnancy. Binge drinking during early pregnancy was reported by 20% of women with a high degree of planned pregnancy and 31% of those with a low degree (p = 0.1). Conclusion Pregnancy planning was associated with a healthier lifestyle but still many women could improve their lifestyle in connection to pregnancy. Their level of alcohol consumption is higher than that recommended for best pregnancy outcome. © 2014 The European Society of Contraception and Reproductive Health

Pregnancy planning and lifestyle prior to conception and during early pregnancy among Danish women

Objective To investigate the extent to which Danish women attending antenatal care plan their pregnancies and to determine the association between pregnancy planning and the intake of folic acid, alcohol consumption and smoking habits prior to conception and before the 16th week of gestation. Methods A cross-sectional survey of 258 women. Main outcome measures: intake of folic acid, alcohol consumption and smoking. Pregnancy planning was assessed by the London Measure of Unplanned Pregnancy (LMUP) and the five graded Swedish Pregnancy Planning Scale. Results Most (77%) of the participants reported that their pregnancies were very or fairly well planned. Higher median LMUP scores were observed in women taking folic acid (p < 0.001), in those consuming less alcohol, and in women who stopped smoking prior to pregnancy (p = 0.043). However, 43% of the respondents with a high degree of pregnancy planning and 98% of those with a low degree of planning had not taken folic acid prior to pregnancy. Binge drinking during early pregnancy was reported by 20% of women with a high degree of planned pregnancy and 31% of those with a low degree (p = 0.1). Conclusion Pregnancy planning was associated with a healthier lifestyle but still many women could improve their lifestyle in connection to pregnancy. Their level of alcohol consumption is higher than that recommended for best pregnancy outcome. © 2014 The European Society of Contraception and Reproductive Health