Enhancing Relaxivity in GdDOTA-Monoamide Complexes through Polar Group-Mediated Ordering of Second-Sphere Water Molecules.

This study was designed to test whether the single appended phosphonate group in GdDOTA-1AmP is sufficient for catalyzing the exchange of proton from the single inner-sphere water-exchanging molecule. Unlike the other phosphonate derivatives in this series, GdDOTA-1AmP showed a surprisingly smooth increase in relaxivity from 3.0 to 6.

StereoPHIP: Stereoselective Parahydrogen-Induced Polarization.

Parahydrogen-induced polarization (PHIP) followed by polarization transfer to C is a rapidly developing technique for the generation of C-hyperpolarized substrates. Chirality plays an essential role in living systems and differential metabolism of enantiomeric pairs of metabolic substrates is well documented. Inspired by asymmetric hydrogenation, here we report stereoPHIP, which involves the addition of parahydrogen to a prochiral substrate with a chiral catalyst followed by polarization transfer to C spins.

Identifying dementia using medical data linkage in a longitudinal cohort study: Lothian Birth Cohort 1936.

Background: The Lothian Birth Cohort 1936 (LBC1936) is a longitudinal study of ageing with well-characterised assessments, but until now, it has relied on self-report or proxies for dementia such as cognitive tests. Our aims were twofold: a) to describe a framework for identifying dementia in a cohort study. b) to report the age-specific incidence and prevalence of all-cause dementia and dementia subtypes in 865 individuals in the LBC1936.

Integrating the MasSpec Pen with Sub-Atmospheric Pressure Chemical Ionization for Rapid Chemical Analysis and Forensic Applications.

Analytical methods that allow rapid, sensitive, and specific chemical measurements are central to forensic analysis and essential to accelerating compound screening and confirmation. We have previously reported the development of the MasSpec Pen technology as an easy-to-use and disposable hand-held device integrated to a mass spectrometer for direct analysis and molecular profiling of biological samples. In this Technical Note, we describe a new apparatus that integrates the MasSpec Pen device with a subatmospheric pressure chemical ionization (sub-APCI) source and an ion trap mass spectrometer for detection and semiquantitative analysis of forensic-related compounds.

Use of Biologic Extracellular Matrix in Two Ways to Reduce Cardiac Electronic Device Infection.

Cardiac implantable electronic device (CIED) infections are a serious complication of both initial device implants and generator change procedures, and they are associated with a wide range of presentations. Reported rates of CIED infections vary widely from 0.1% to 19.

Assessing predictors of respiratory tract infections in infants born to teenage mothers: secondary analysis of the Building Blocks trial data.

Background: Respiratory tract infections (RTIs) are estimated to account for 60% of infants' primary care visits. There is limited research into risk factors for infant RTIs in those born to teenage mothers.

Aims: To identify risk factors for primary and secondary care RTI attendances, in infants of teenage mothers, and to identify risk factors associated with high primary care RTI consultations.

Focus groups: the lived experience of participants with multiple sclerosis.

Multiple sclerosis (MS) is a chronic disease affecting young adults. The presence of the sometimes-invisible symptoms (loss of vision, fatigue, incontinence) and the episodic nature and uncertainty of symptoms can create a constant sense of vigilance or support the use of denial. Indeed, family, friends, and even nursing support may be elusive, leaving one feeling lonely, frightened, and insecure.