- Erythrocyte glutamine depletion, altered redox environment, and pulmonary hypertension in sickle cell disease. Morris, C.R., Suh, J.H., Hagar, W., Larkin, S., Bland, D.A., Steinberg, M.H., Vichinsky, E.P., Shigenaga, M., Ames, B., Kuypers, F.A., Klings, E.S. Blood (2008)