AID/APOBEC-like cytidine deaminases are ancient innate immune mediators in invertebrates.

In the course of both innate and adaptive immunity, cytidine deaminases within the activation induced cytidine deaminase (AID)/apolipoprotein B editing complex (APOBEC) family modulate immune responses by mutating specific nucleic acid sequences of hosts and pathogens. The evolutionary emergence of these mediators, however, seems to coincide precisely with the emergence of adaptive immunity in vertebrates. Here, we show a family of genes in species within two divergent invertebrate phyla-the echinoderm Strongylocentrotus purpuratus and the brachiopod Lingula anatina-that encode proteins with similarities in amino acid sequence and enzymatic activities to the vertebrate AID/APOBECs.

Lectins identify distinct populations of coelomocytes in Strongylocentrotus purpuratus.

Coelomocytes represent the immune cells of echinoderms, but detailed knowledge about their roles during immune responses is very limited. One major challenge for studying coelomocyte biology is the lack of reagents to identify and purify distinct populations defined by objective molecular markers rather than by morphology-based classifications that are subjective at times. Glycosylation patterns are known to differ significantly between cell types in vertebrates, and furthermore they can vary depending on the developmental stage and activation states within a given lineage.

Operative treatment of midclavicular fractures in 62 elderly patients: knowles pin versus plate.

This prospective, randomized trial compared treatment with Knowles pins and plates in 62 elderly patients (>50 years) with midclavicular fractures. The clinical outcomes were evaluated at 30 months postoperatively. The mean shoulder score of the Knowles pinning was 85 points and the plating was 84 points (P=.

Surgical treatment of undisplaced femoral neck fractures in the elderly.

The study was a retrospective evaluation and comparison. Eighty-four elderly patients (> 60 years) with undisplaced intracapsular femoral neck fractures were treated with osteosynthesis with either dynamic hip screws (DHS) or multiple cannulated screws (MCS). The Singh index was used to evaluate bone quality.