Michael K McCormack

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We have studied in fresh and 24-hour incubated samples the osmotic fragility of erythrocytes from 13 individuals with Huntington disease (HD) and 22 at-risk, asymptomatic individuals. Five older at-risk, asymptomatic individuals and six Alzheimer disease individuals were also studied. Results suggest that osmotic fragility of red cells from HD individuals(More)
BACKGROUND As the field of genetic medicine advances and more tests for genetic diseases become available, a dilemma of legal and ethical importance will be increasingly encountered by family physicians. Protecting the confidentiality of a patient with a genetic disease when the patient's family is at risk for inheriting the disease is a conflict that more(More)
Prenatal exposure to seven heavy metals (cadmium, chromium, cobalt, lead, mercury, nickel, and silver) was determined for amniotic fluid taken from 92 pregnant women undergoing amniocentesis at approximately 16 to 18 weeks' gestation. Follow-up assessment of their children's cognitive skills and health status was conducted when the children were(More)
Haemoglobin Malmöbeta97His leads to Gln, a high oxygen affinity haemoglobin which causes secondary erythrocytosis, is transmitted in an autosomal dominant manner. A hypothesis accounting for the high oxygen affinity, hyperbolic oxyhaemoglobin dissociation curve, and the relatively normal Bohr effect is presented. The purified abnormal haemoglobin from the(More)
Sickle-cell trait, a condition present in 7% to 9% of the United States Black population, is usually considered to be a clinically benign condition. However, there is increasing evidence to indicate the contrary, that is, the clinical pathophysiology is variable, ranging from a benign condition in most cases to a relatively few cases of severe pathological(More)