The Bio-Rad Variant Hemoglobin Testing System is an automated HPLC analyzer marketed with a Beta-thalassemia Short Program to quantify hemoglobins (Hbs) F and A2 and assist in detecting Hbs A, S, C, D, and E. We evaluated this system to replace several traditional methods for Hb in our hospital laboratory. Analytical performance relevant to quantifying Hbs A, S, C, and F was assessed with blood...

Letter to the Editor We would like to comment on the article by Shokrani et al [ 1 ], published in the April 2000 issue of the Annals o f Clinical & Laboratory Science. The authors begin their abstract by stating that HbA2 measurements aid in the differential diagnosis of sickle cell anemia from sickle-beta-thalassemia. This, unless meant for the analysis of families, is incorrect. The HbA2 val...

Hydration water determines the stability and function of phospholipid membranes as well as the interaction of membranes with other molecules. Experiments and simulations have shown that water dynamics slows down dramatically as the hydration decreases, suggesting that the interfacial water that dominates the average dynamics at low hydration is slower than water away from the membrane. Here, ba...

This study was performed to study the immune response to hepatitis B virus (HBV) vaccine in health-care workers. Through a cross-sectional study, relevant information and blood samples from 151 healthcare workers at the Firuzgar hospital were studied. The age range of the study individuals was 20-59 years, with the mean and standard deviation being 35.11 and 10.06, respectively. There were 24 m...

Sera from 600 male homosexual patients were tested for hepatitis B antigen (HBs Ag) and its antibody (HBs Ab). Thirty-one men (5-2%) were positive for HBs Ag. Testing for HBs Ab by immuno-osmoelectrophoresis 33 men (5-5%) were positive. However, sera of 85 patients negative for HBs Ab by routine methods were examined for HBs Ab by radioimmune assay. Thirty (35%) sera were found to be positive. ...

BACKGROUND AND OBJECTIVES Anesthesiologists are especially exposed to blood and secretions. Hepatitis B virus infection is the major occupational risk for health care professionals. This study aimed at evaluating the prevalence of Ag-HBs, anti-HBs and anti-HBc among anesthesiologists of the city of Goiânia, as well as their vaccination status. METHODS Participated in this study 90 out of 200 ...

The internal fluid flow capacity of hydrate-bearing sediment (HBS) is one the important factors affecting efficiency natural gas exploitation. This paper focuses on seepage studies hydrates with following contents: scope theories’ application, normalized permeability (Kt) models, extension combined new technology, and development. No review has elucidated prediction original (K0) sediments with...

BACKGROUND The standard treatment of stroke in sickle cell disease is chronic transfusion to maintain the fraction of abnormal hemoglobin (hemoglobin S [HbS]) below 20%. Risks associated with such transfusion can be reduced by allowing higher HbS levels, but the physiological consequences of this modification are unknown. Cerebral blood flow is elevated in sickle cell disease proportionate to t...

The significance of a delayed type hypersensitivity skin reaction to hepatitis B surface antigen (HBsAg) (HBs-DTH) in type B viral hepatitis (VHB) and in intradermal hepatitis B (HB) vaccination is reviewed. HBs-DTH could be developed by the intradermal injection of HB vaccine in anti-HBs positive people and also in persons immunized with HB vaccine. Thus, HBs-DTH could serve as a useful marker...