What Do Binge Drinkers Drink?: Implications for Alcohol Control Policy

BACKGROUND: Although binge drinking (drinking five or more drinks on an occasion) is an important public health problem, little is known about which beverage types are consumed by binge drinkers. This knowledge could guide prevention efforts because beer, wine, and liquor are taxed, marketed, and distributed differently. METHODS: Data from 14,150 adult binge drinkers who responded to the Behavioral Risk Factor Surveillance System binge-drinking module in 2003 and 2004 were analyzed. Information pertained to the amount of alcohol consumed during a binge drinker's most recent binge episode, including beverage-specific consumption. RESULTS: Overall, 74.4% of binge drinkers consumed beer exclusively or predominantly, and those who consumed at least some beer accounted for 80.5% of all binge alcohol consumption. By beverage type, beer accounted for 67.1%, liquor for 21.9%, and wine accounted for 10.9% of binge drinks consumed. Beer also accounted for most of the alcohol consumed by those at highest risk of causing or incurring alcohol-related harm, including people aged 18-20 years (67.0% of drinks were beer); those with three or more binge episodes per month (70.7%); those drinking eight or more drinks per binge episode (69.9%); those binging in public places (64.4%); and those who drove during or within 2 hours of binge drinking (67.1%). CONCLUSIONS: Beer accounted for two thirds of all alcohol consumed by binge drinkers and accounted for most alcohol consumed by those at greatest risk of causing or incurring alcohol-related harm. Lower excise taxes and relatively permissive sales and marketing practices for beer as compared with other beverage types may account for some of these findings. These findings suggest that equalizing alcohol control policies at more stringent levels would be an effective way to prevent excessive drinking.     

Hematogones: a multiparameter analysis of bone marrow precursor cells

Morphologically distinct lymphoid cells with homogeneous, condensed chromatin and scant cytoplasm can be observed in large numbers in the bone marrow of children with a variety of hematologic and nonhematologic disorders. In some patients, these cells may account for greater than 50% of the bone marrow cells, creating a picture that can be confused with acute lymphoblastic leukemia (ALL) or metastatic tumor. Although originally called hematogones (HGs), a variety of other names have been proposed for these unique cells. The clinical significance of expanded HGs has not been resolved, and the biologic features of these cells are incompletely described. In this study, we correlate the clinical, morphologic, cytochemical, flow cytometric, molecular, and cytogenetic properties of bone marrow samples from 12 children with substantial numbers of HGs (range 8% to 55% of bone marrow cells). Diagnoses in these patients included anemia, four; neutropenia, one; anemia and neutropenia, one; idiopathic thrombocytopenic purpura, two; retinoblastoma, two; Ewing's sarcoma, one; and germ cell tumor, one. Flow cytometric analyses of bone marrow cells demonstrated a spectrum extending from early B-cell precursors (CD10+, CD19+, TdT+, HLA-Dr+) to mature surface immunoglobulin-bearing B cells in these patients, corroborating our morphologic impression of HGs, intermediate forms, and mature lymphocytes. DNA content was normal, and no clonal abnormality was identified by either cytogenetic or immunoglobulin and T-cell receptor (TCR) gene rearrangement studies. Follow-up ranged from 3 months to 3 years. None of the patients has developed acute leukemia or bone marrow involvement by solid tumor. The possible role of HGs in immune recovery and hematopoiesis is presented.     

Proteolytic inactivation of human factor VIII procoagulant protein by activated human protein C and its analogy with factor V

Purified human factor VIII procoagulant protein (VIII:C) was treated with purified human activated protein C (APC) and the loss of VIII:C activity correlated with proteolysis of the VIII:C polypeptides. APC proteolyzed all VIII:C polypeptides with mol wt = 92,000 or greater, but not the doublet at mol wt = 79-80,000. These results and our previous thrombin activation studies of purified VIII:C, are analogous with similar studies of factor V and form the basis for the following hypothesis: activated VIII:C consists of heavy and light chain polypeptides [mol wt = 92,000 and mol wt = 79-80,000 (or 71-72,000), respectively] which are similar in Mr to the heavy and light chains of activated factor V. Thrombin activates VIII:C and V by generating these polypeptide chains from larger precursors and APC inactivates both molecules by cleavage at a site located in the heavy chain region of activated VIII:C and V.     

Multiple genotypes of the merozoite surface proteins 1 and 2 in Plasmodium falciparum infections in a hypoendemic area in Iran

In Iran, malaria transmission mainly occurs in south-eastern regions through both Plasmodium falciparum and P. vivax. The genetic diversity of P. falciparum isolates was analysed in 108 patients attending the regional hospital in Chabahar District, using the molecular markers msp1 and msp2. Multiple genotypes were detected in 87% of patients and the mean numbers of msp1 and msp2 genotypes were 2.51 (95% CI: 2.29-2.73) and 2.61 (95% CI: 2.39-2.83) respectively. Various allelic types of msp1 and msp2 were found, with msp2 3D7/IC type detected in 94% of infections. Plasmodium falciparum infections in south-east Iran appear to have a higher genetic diversity than expected for an area of low transmission. A situation of higher transmission in this area may be emerging, possibly because of reduced efficacy of first-line treatments.