The relationship between maternal characteristics and carotid intima-media thickness using an automated ultrasound technique

ABSTRACT

Objective: To investigate CIMT and its relationship with maternal demographic characteristics in healthy pregnancy. Methods: CIMT was measured using an au. Results: CIMT showed no relationship with gestational age (rho=?0.124, p=0.335), parity (Z=?0.055, p=0.960) and MAP (rho=0.110, p=0.393). A relationship was found between CIMT and maternal age (rho=0.277, p=0.028), booking BMI (rho=0.278, p=0.027), and BMI at time of study (rho=0.287, p=0.023). CIMT ranged from 0.30-0.80mm, the 97.5th percentile was 0.63 mm. Conclusion: In healthy pregnancy, we reported CIMT was related to BMI and maternal age but not parity or gestational age.     

Human fluids alter DNA-acquisition in Acinetobacter baumannii

Transformation is one of the mechanisms of acquisition of foreign genetic material leading to the emergence of multidrug resistant (MDR) bacteria. Recently, human serum albumin (HSA) was shown to specifically increase transformation frequency in the nosocomial pathogen Acinetobacter baumannii. To further assess the relevance of HSA as a possible modulator of A. baumannii transformation in host-pathogen interactions, in this work we examined the effect of different human fluids. We observed a significant increase in transformation frequencies in the presence of pleural fluid, whole blood cells and liquid ascites, and to a lesser extent with urine. The observed effects correlate with both HSA and bacterial content found in the assayed patient fluids. Taken together, these results are in agreement with our previous findings that highlight HSA as a possible host signal with the ability to trigger natural transformation in A. baumannii.     

Research participation,trust, and fair compensation among people living with and without HIV in Florida

Florida has the second highest number of newly diagnosed cases of HIV in the United States. Sociodemographic representation that is reflective of the population is essential in developing evidence based interventions to improve HIV outcomes and reduce disparities. Understanding HIV research trial participation, preferences for types of research, and fair compensation for research will further our understanding of someone’s decision to participate in research. The purpose of this analysis was to identify differences in prior research participation, trust, interests in types of research, and fair compensation between people living with HIV and without HIV in North Central Florida. In this sample of 8340 people interviewed in the community about their health concerns and research participation, 156 reported living with HIV. Only 20.5% of people with HIV reported past participation in research, however 94.2% said they were interested in future research participation. While people with HIV were slightly more interested in higher risk/low convenience research, there were no statistically significant differences in preferences for types of research between those with and without HIV. People with HIV reported no difference in the amount they would request for fair compensation ($78.4 USD) compared with those without HIV ($72.2 USD, p?=?0.69). Community members are interested in participating in research, although few had previously participated. Improving our understanding of research study participation will help improve recruitment efforts and draw stronger conclusions regarding the effectiveness of interventions, as well as enhance implementation of these interventions.     

A dyadic genotype–phenotype approach to diagnostic criteria for Proteus syndrome

Phenotype‐based diagnostic criteria were developed for Proteus syndrome in 1999 and updated in 2006. Subsequently, the causative mosaic gene alteration was discovered, the c.49G>A p.E17K variant in AKT1. As well, a number of overlapping overgrowth disorders attributable to mosaic PIK3CA variants have now been characterized, leading to the designation of PIK3CA‐related overgrowth spectrum (PROS). Finally, ongoing work to better characterize Proteus syndrome has led to identification of additional features of that disorder that could be useful in diagnostic criteria. We have taken the opportunity of these discoveries to re‐evaluate the Proteus syndrome diagnostic criteria. Here we propose a new set of diagnostic criteria that establishes a weighted, point‐based system for the phenotypic attributes and then integrates that with the potential molecular test results to result in one of two designations: AKT1‐related Proteus syndrome or AKT1‐related overgrowth spectrum. A patient whose only manifestation is an AKT1 c.49G>A‐positive tumor would receive neither of these designations. Here we review the rational basis of diagnostic criteria and argue that a unitary diagnostic entity is a distinct gene‐phenotype dyad and that this should be the model for all mendelian disorders. The gene‐alone or phenotype‐alone approach is inadequate to rigorously delineate a unitary diagnostic entity.     

Debate on MERS-CoV respiratory precautions: surgical mask or N95 respirators?

Since the emergence of Middle East respiratory syndrome coronavirus (MERS-CoV) in mid-2012, there has been controversy over the respiratory precaution recommendations in different guidelines from various international bodies. Our understanding of MERS-CoV is still evolving. Current recommendations on infection control practices are heavily influenced by the lessons learnt from severe acute respiratory syndrome. A debate on respiratory precautions for MERS-CoV was organised by Infection Control Association (Singapore) and the Society of Infectious Disease (Singapore). We herein discuss and present the evidence for surgical masks for the protection of healthcare workers from MERS-CoV.