A qualitative evaluation of an exercise practitioner in an outpatient child and adolescent mental health service.

Background: Physical activity interventions can confer a range of physical and mental health benefits among young people with mental disorders. In some contexts, such as Ireland, integrated physical activity is not easily available within child and adolescent mental health services. Therefore, an interagency pilot intervention was established in a child and adolescent mental health service in Ireland with the integration of a novel exercise practitioner into the multidisciplinary mental health team.

Magnesium deficiency enhances basal glucose disposal in the rat.

To investigate the contribution of hepatic and peripheral tissues to the enhanced glucose disposal rate (Kg) observed in magnesium (Mg)-deficient rats, euglycemic-hyperinsulinemic clamps were performed with continuous infusion of [3-3H]glucose and three insulin infusion rates, 1, 8, and 16 microU.kg-1.min-1.

A human Hox 1 homeobox gene exhibits myeloid-specific expression of alternative transcripts in human hematopoietic cells.

As part of a survey of the expression of homeobox-containing genes in human hematopoietic cells, we identified a novel gene (PL1) expressed only in cells of the myelomonocytic lineage (Shen et al., Proc. Natl.

Magnesium deficiency and blood 2,3-diphosphoglycerate concentrations in sedentary and exercised male Osborne-Mendel rats.

Magnesium deficiency lowers endurance capacity of untrained rats by an as yet unknown mechanism. We tested the hypothesis that low plasma and blood Mg concentrations would reduce blood 2,3-diphosphoglycerate (2,3-DPG) concentrations, thus diminishing the oxygen delivery system of the Mg-deficient rat. Untrained male Osborne-Mendel rats (95 g) were studied at rest or following exhaustive exercise after three weeks of dietary treatment (400 or 100 micrograms Mg/g diet; deionized or high Mg water [greater than 85 micrograms Mg/ml]).

Lineage-restricted expression of homeobox-containing genes in human hematopoietic cell lines.

We investigated the role of homeobox-containing genes in human hematopoiesis because homeobox genes (i) control cell fate in the Drosophila embryo, (ii) are expressed in specific patterns in human embryos, and (iii) appear to function as transcription factors that control cell phenotype in other mammalian organs. Using four homeobox probes from the HOX2 locus and a previously undescribed homeobox cDNA (PL1), we screened mRNAs from 18 human leukemic cell lines representing erythroid, myeloid, and T- and B-cell lineages. Complex patterns of lineage-restricted expression are observed: some are restricted to a single lineage, while others are expressed in multiple lineages.

Expression of homeobox genes in human erythroleukemia cells.

Because homeobox-containing genes play a major role in embryogenesis and tissue identity in Drosophila and because similar genes encode tissue-specific transcription factors in mammalian cells, we hypothesized that homeobox genes might plan a role in hematopoietic differentiation and lineage commitment. We therefore surveyed a number of human leukemic cell lines for expression of homeobox-containing genes by Northern gel analysis with probes from the Hox 2 cluster of homeobox genes on chromosome 17. We observed transcripts for Hox 2.

The effect of variable magnesium intake on potential factors influencing endurance capacity.

Rats fed a magnesium (Mg) deficient diet have a lower endurance capacity than rats fed Mg adequate diets. The current study evaluates the effects of marginal, moderate, and severe Mg deficiencies on physiological and biochemical changes that may contribute to the reduced endurance capacity of Mg deficient rats. Variable levels of dietary Mg (400, 200, 100, 50 micrograms/g) were fed for 23 d to 5-wk-old male Osborne-Mendel rats.

Effects of exercise, detraining, starvation, and refeeding on lipogenic capacity of Osborne-Mendel rat.

Both starvation and refeeding and exercise and detraining are procedures that result in lowered lipid stores followed by their refilling. Rats subjected to these procedures were evaluated for their ability to produce hepatic biosynthetic reducing equivalents. Five-week-old male Osborne-Mendel rats were exercised on a motorized treadmill for 6 wk (final speed 27 m/min, 60 min/day, 6 day/wk) or kept sedentary.

Dietary magnesium intake influences exercise capacity and hematologic parameters in rats.

The effects of feeding varying concentrations of dietary Mg (50, 100, 200, or 400 ppm) for 22 days on exercise capacity and hematologic parameters were investigated in male rats. Five-week-old male Osborne-Mendel rats fed diets containing 50 or 100 ppm Mg developed transitory priapism and hyperemia, signs of Mg deficiency. Based on a treadmill test, these rats showed a markedly lower exercise endurance capacity (four hours) than rats fed the higher levels of dietary Mg (six hours).