Anything in there? :Archaeobotanical research on a Celtic Field from Westeinde

Despite being a well-known type of site, later pre¬historic field systems (Celtic fields or raatakkers) have received only moderate archaeobotanical attention. This means we are poorly informed on the past agricultural use-histories of these types of sites. To this end, the Celtic field com¬plex of Westeinde - Noormansveld (Drenthe, The Netherlands) was used as a case-study to inves¬tigate the potential of macrobotanical research. Whilst several foodcrops could be identified (e.g. emmerwheat, barley, millet and flax/linseed) their numerical presence with regard to sam¬ple volume were extremely low (1.5-5 charred remains per 100 liter Celtic field sediment). Moreover, contextual association to charcoal and sherds, suggests that this selection of species represents settlement activities (i.e. manuring and refuse disposal) rather than local production. This tallies with the fact that species for which no char¬ring is required during processing (e.g. flax and millet) are also found in a charred state. These results merit more detailed attention to sample types, contexts, volumes and interpretations in the study of later prehistoric field systems

The Methodological Development of an Interprofessional Educational Program to Provide Proactive Integrated Care for Elders

Background: Interprofessional collaboration in practice (IPCP) between professionals from the medical and social domain within primary care is desirable; however, it is also challenging due to fragmented healthcare. Little is known about the development of IPCP in primary care to fit the implementation context. This article describes the methodological development and the final content of an IPCP program.Methods and findings: The development process started with the identification of IPCP competencies in a literature review and a qualitative needs analysis with semi-structured interviews among eight elders and four health care professionals. The results were discussed during a first consultation with an expert team, which consisted of ten health care professionals. Consensus was reached on the themes role identity, communication, and shared vision development to form the basis of the program. A second consultation with the experts discussed the first version of the program. Then, consensus was reached on the final version of the program, which included a blended learning approach consisting of two face-to-face meetings, online learning, and on-the-job learning with a sixteen-hour time investment over a six-week period.Conclusions: The IPCP program was developed based on educational strategies and evidence, and with the support and knowledge of practice experts to fit the implementation context.

Early introduction of complementary foods and childhood overweight in breastfed and formula-fed infants in the Netherlands:the PIAMA birth cohort study

To investigate whether early introduction of complementary foods (CF) is associated with an increased risk of overweight during childhood, and whether this association differs between formula-fed and breastfed infants.We included 2611 participants that were born at term from a Dutch population-based birth cohort (n = 3963) designed to investigate the development of asthma and allergies. Parents kept records of their infant's age when CF were first introduced. Weight and height were parent reported yearly from age 1 to 8 years, and at ages 11, 14 and 17 years. We used multivariate generalized estimating equations analysis to investigate the association between timing of CF introduction (before 4 months vs at or after 4 months of age) and overweight at ages 1-17 years.Children with CF introduction before 4 months had higher odds of being overweight during childhood than children with CF introduction at or after 4 months (OR 1.32, 95% CI 1.19, 1.47). This association was observed in formula-fed infants (OR 1.51, 95% CI 1.17, 1.94) and breastfed infants (OR 1.32, 95% CI 1.19, 1.47). The duration of breastfeeding modified the association between CF introduction and overweight: children breastfed for shorter than 4 months, but not children breastfed for 4 months or longer with CF introduction before 4 months had higher odds of being overweight (OR 1.37, 95% CI 1.19, 1.57 and 1.07, 95% CI 0.87, 1.32, respectively), compared to those with CF introduction at or after 4 months.In children born at term, formula-fed infants and infants who were breastfed for shorter than 4 months, but not infants who were breastfed for 4 months or longer, had a higher risk of being overweight during childhood when being introduced to CF before 4 months of age.</p

Socio-behaviour challenges to phase III HIV vaccine trials in sub-Saharan Africa

Background: A number of countries in sub-Saharan Africa are preparing for HIV vaccine efficacy trials. Social and behavioural factors related to HIV transmission require examination in each setting where these trials are considered. As part of this, several countries have also recently begun preparatory research investigating relevant social and behavioural issues. There is a need for a review of the literature to help focus such research efforts in Sub-Saharan Africa. Objective: To examine key social and behavioural issues that may impact on the conduct of HIV vaccine efficacy trials in sub-Saharan Africa. Design: Literature review Methods: Major databases (PubMed, PsychInfo, EBSCOhost, and AIDSline) were searched for literature that discussed social and behavioural issues related to HIV vaccine trials. Three areas are highlighted as being particularly significant for HIV vaccine research: (1) willingness to participate in future HIV vaccine efficacy trials, (2) retention of participants in studies, and (3) sexual risk reporting during trials. For each of these topics, major findings from both developed and developing countries are described and avenues for further research are discussed. Results: There are few data from Sub-Saharan Africa regarding willingness to participate in HIV vaccine trials. Data on participant retention rates varies widely, and maintaining large cohorts of individuals within Phase III trials presents an important challenge. In addition, the possible impact of trial participation on sexual disinhibition, and response bias on sexual risk-reporting remain as issues for HIV vaccine trials in African contexts. Conclusions: Social and behavioural research forms an important part of preparations for HIV vaccine efficacy trials, and there is a clear need for more research of this type in Sub-Saharan Africa. Innovative approaches are required to address issues such as willingness to participate in vaccine research, participant retention during efficacy trials, and the accurate reporting by participants of sexual risk behaviours

Zr-89-pembrolizumab biodistribution is influenced by PD-1-mediated uptake in lymphoid organs

Background To better predict response to immune checkpoint therapy and toxicity in healthy tissues, insight in the in vivo behavior of immune checkpoint targeting monoclonal antibodies is essential. Therefore, we aimed to study in vivo pharmacokinetics and whole-body distribution of zirconium-89 (Zr-89) labeled programmed cell death protein-1 (PD-1) targeting pembrolizumab with positron-emission tomography (PET) in humanized mice. Methods Humanized (huNOG) and non-humanized NOG mice were xenografted with human A375M melanoma cells. PET imaging was performed on day 7 post(89)Zr-pembrolizumab (10 mu g, 2.5 MBq) administration, followed by ex vivo biodistribution studies. Other huNOG mice bearing A375M tumors received a co-injection of excess (90 mu g) unlabeled pembrolizumab or(89)Zr-IgG(4)control (10 mu g, 2.5 MBq). Tumor and spleen tissue were studied with autoradiography and immunohistochemically including PD-1. Results PET imaging and biodistribution studies showed high(89)Zr-pembrolizumab uptake in tissues containing human immune cells, including spleen, lymph nodes and bone marrow. Tumor uptake of(89)Zr-pembrolizumab was lower than uptake in lymphoid tissues, but higher than uptake in other organs. High uptake in lymphoid tissues could be reduced by excess unlabeled pembrolizumab. Tracer activity in blood pool was increased by addition of unlabeled pembrolizumab, but tumor uptake was not affected. Autoradiography supported PET findings and immunohistochemical staining on spleen and lymph node tissue showed PD-1 positive cells, whereas tumor tissue was PD-1 negative. Conclusion Zr-89-pembrolizumab whole-body biodistribution showed high PD-1-mediated uptake in lymphoid tissues, such as spleen, lymph nodes and bone marrow, and modest tumor uptake. Our data may enable evaluation of(89)Zr-pembrolizumab whole-body distribution in patients

Carbon-fiber tips for scanning probe microscopes and molecular electronics experiments

We fabricate and characterize carbon-fiber tips for their use in combined scanning tunneling and force microscopy based on piezoelectric quartz tuning fork force sensors. An electrochemical fabrication procedure to etch the tips is used to yield reproducible sub-100-nm apex. We also study electron transport through single-molecule junctions formed by a single octanethiol molecule bonded by the thiol anchoring group to a gold electrode and linked to a carbon tip by the methyl group. We observe the presence of conductance plateaus during the stretching of the molecular bridge, which is the signature of the formation of a molecular junction.Comment: Conference Proceeding (Trends in NanoTechnology 2011, Tenerife SPAIN); Nanoscale Research Letters, (2012) 7:25

Prospective longitudinal study on fear of cancer recurrence in patients newly diagnosed with head and neck cancer:Course, trajectories, and associated factors

Background: This study assessed the course of fear of cancer recurrence (FCR) in patients newly diagnosed with head and neck cancer (HNC), identified FCR trajectories and factors associated with FCR trajectories. Methods: Six hundred and seventeen HNC patients from the NET-QUBIC cohort study completed the Cancer Worry Scale-6 at diagnosis, 3 and 6 months post-treatment. FCR trajectories were identified using Latent Class Growth Analysis. Associations were explored between FCR trajectories and baseline demographic and medical variables, coping and self-efficacy. Results: Overall, FCR decreased slightly between baseline and 3 months post-treatment and remained stable up to 6 months. Two FCR trajectories were identified: “high stable” (n = 125) and “low declining” (n = 492). Patients with high stable FCR were younger, reported more negative adjustment, passive coping, and reassuring thoughts, and less avoidance. Conclusions: The majority of HNC patients have low declining FCR after diagnosis, but one in five patients experience persistent high FCR up to 6 months post-treatment