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Biomedical subjects

P Bailey

Publications and source records attributed to P Bailey.

At least 109 records · Page 6Linked to original sources
PubMed1979

Effects of thyroxine on postnatal cell acquisition in the rat brain.

The effects of treatment with L-thyroxine (3 micrograms by subcutaneous injection daily from birth) on cell acquisition in the rat brain were studied during the first 3 postnatal weeks. In the forebrain, thyroxine has no effect on cell proliferation in the first 6 days, but it causes decreased cell acquisition from 12 to 21 days so that cell number becomes significantly reduced. Estimates of cell proliferation kinetics and of cell death in the lateral ventricular subependymal layer show no apparent abnormality. In the cerebellum, treatment from birth leads to increased cell proliferation during the first week: in comparison with controls, the rate of [3H]thymidine incorporation into DNA, thymidine kinase activity, and the number of cells both in the major germinal site (external granular layer: EGL) and in the whole cerebellum are elevated. This initial effect of thyroxine appears by day 3 and is short-lived, being no longer evident after day 6. The build-up of cell numbers in the EGL at day 6 seems to be related to a preceding, transient retardation of cell migration from this layer rather than to an acceleration of cell replication, since cell cycle parameters are normal. From day 12 the rate of [3H]thymidine incorporation into DNA is severely reduced in treated rats. Advancement of cellular differentiation rather than increased cell death in the EGL appears to be involved in this phenomenon.

Aging↗
PubMed1979

Idiopathic pulmonary haemosiderosis: report of two cases and review of the literature.

Idiopathic pulmonary haemosiderosis (IPH) is a rare disorder affecting mainly children and adolescents, and is usually fatal. However, there is increasing evidence that the aetiology of this condition is immunological, and that immunosuppressives may prolong remission. Two cases are reported, one of which has the atypical feature of a malabsorption syndrome. This has not been previously reported. The literature is reviewed and current ideas on the postulated immunological basis to IPH are discussed.

Anemia, Hypochromic↗
PubMed1978

The answer's simple...two plus two makes four.

Problems related to training administrators are not difficult to resolve. In this article author discusses methods of motivating students during training, and argues that students' capabilities for self-instruction must be fully utilised.

Administrative Personnel↗
PubMed1977

Amniotic fluid glucose in pregnancies complicated by diabetes.

Amniotic fluid glucose (AF glu) was studied in 92 pregnancies complicated by maternal diabetes. An inverse relation between AF glu and gestational age was found: [AF glu (mg. per diciliter) = 160.9 -- 3.51 (weeks gestation); r = -0.47]. A direct relation between AF glu and severity of maternal diabetes was observed: mean AF glu (mg. per deciliter) = 24.6 +/- S.D. 12.3 in Class A, 41.2 +/- 25.5 in Class AD and 57.5 +/- 36.5 in Classes B-D. A positive correlation of AF glu with osmolality was observed [AF Osm (mOsm. per kilogram) = 250.7 + 0.22 AF glu; r = +0.50], but this relation was remarkable inconsistent in individual patients. Neither individual nor serial AF glu levels were of any prognostic value in predicting fetal condition or perinatal outcome.

Amniocentesis↗
PubMed1976

Amniotic fluid osmolality in pregnancies complicated by diabetes.

Amniotic fluid osmolality (AF Osm) was studied in 247 patients whose pregnancies were complicated by maternal diabetes. Significant increases in mean AF Osm accompanied pre-existing fetal as well as subsequent perinatal death. Abnormal increases in AF Osm were associated with a significant increase in risk of perinatal compromise with cumulative morbidity and mortality rates of 54 per cent. These data suggest that serial evaluation of AF Osm enables detection of a "higher risk" group of diabetic pregnancies in which perinatal death is more than doubled.

Adolescent↗
PubMed1975

Amniotic fluid creatinine in pregnancies complicated by diabetes.

Amniotic fluid (AF) creatinine concentrations, determined in 353 samples from 167 pregnancies complicated by maternal diabetes, are similar to those found at comparable gestation in uncomplicated pregnancy. Added maternal vascular disease significantly raises AF creatinine to such a degree that overestimation of fetal (renal) maturity is a clinical hazard if based solely on this parameter. Relative concentrations of creatinine in AF and maternal plasma (AF/MP ratio) are related to gestational age. Failure of AF creatinine to rise consistently on successive serial samples accompanies an increased risk of perinatal death in the pregnancy complicated by diabetes, four of five deaths in the present series following declines in this measurement.

Adult↗
PubMed1975

Assessment of voice stress in children.

An assessment of voice stress in two children presenting for psychiatric treatment is accomplished through the use of a new instrument called the Psychological Stress Evaluator (PSE-1). It is designed to measure the audible and inaudible voice frequencies whose strengths and patterns relate inversely to the degree of psychological stress in the voice of the speaker. Stressful responses were found in 1-hour recordings of psychiatric interviews with these two children and data analysis was organized into three major categories: content of communication, responses to therapist-posed questions, and miscellaneous responses not included in the other two categories.

Child↗