Although alcohol is the focus of this review, it is highly probable, given the common neural and biochemical pathways used by drugs of abuse, that the findings described here will also apply to other drugs.”
“We previously used directed evolution in human airway epithelia to create adeno-associated virus 2.5T (AAV2.5T), a highly infectious chimera of AAV2 and AAV5 with one point mutation (A581T). We hypothesized that the mechanism for its increased infection may be a higher Selleck Sapitinib binding affinity to the surface of airway epithelia than its parent AAV5. Here, we show that, like AAV5, AAV2.5T, uses 2,3N-linked sialic acid as its primary receptor; however, AAV2.5T binds to the apical

surface of human airway epithelia at higher levels and has more receptors than AAV5. Furthermore, its binding affinity is similar to that of AAV5. An alternative hypothesis is that AAV2.5T interaction with 2,3N-linked sialic acid may instead be required for cellular internalization. Consistent with this, AAV2.5T binds but fails to be internalized by CHO cells that lack surface expression of sialic acid. Moreover, whereas AAV2.5T binds similarly to human (rich in 2,3N-linked sialic acid) and pig airway epithelia (2,6N-linked sialic acid), significantly more virus was internalized by human airway. Subsequent transduction correlated with the level of internalized rather than surface-bound virus. We also found that human airway epithelia internalized significantly

more AAV2.5T than AAV5. These data suggest that AAV2.5T has evolved to utilize specific 2,3N-linked sialic acid residues

on the surface of airway aminophylline selleck inhibitor epithelia that mediate rapid internalization and subsequent infection. Thus, sialic acid serves as not just an attachment factor but is also required for AAV2.5T internalization, possibly representing an important rate-limiting step for other viruses that use sialic acids.”
“Objective: Dehydroepiandrosterone sulfate (DHEA-S) decline in chronic urticaria (CU) may be involved in etiopathogenesis of the disease or is a secondary phenomenon resulting e.g. from psychological distress. The relation between mental stress and skin diseases is well documented, however not focused on urticaria. We sought to explore the association of mood disturbances and the sense of coherence (SOC), as psychological distress parameters, and DHEA-S decline in patients suffering from CU. Methods: The patient sample included 54 subjects with active CU. Fifty-nine healthy subjects were enrolled in the control group. In all subjects DHEA-S serum concentration was measured and mental status analyzed using the, State and Trait Anxiety Inventory, SOC Questionnaire and Beck Depression Inventory. Results: Urticaria patients showed lower serum concentration of DHEA-S (p = .01) and lower level of the SOC (p = .009), as well as higher level of anxiety as a state (p < .001) and as a trait (p =.001), and higher level of depression (p = .003).