Extending multidisciplinary management of cleft palate to the developing world.

The needs of patients with a cleft lip and/or palate (CL/P) extend beyond surgical repair. A multidisciplinary approach to the care of patients with CL/P is the widely accepted standard in most regions of the developed world. Patients with CL/P in developing countries have needs similar to those of patients in industrialized nations. However, the existing shortages of healthcare resources have precluded provision of the most basic care to those with a CL/P. Innovative applications of technology can facilitate the delivery of speech therapy, evaluation of audiometric data, and limited dental evaluation for these patients with a modest financial investment. One method by which this care might be provided is with the use of Internet-based modalities. This represents a near universally available method to fill a conspicuous gap in the preoperative evaluation and postoperative care of patients with CL/P in the developing world. With rapidly expanding access to the Internet, particularly with wireless-3G connectivity worldwide, it is time to expand our delivery of humanitarian care beyond surgery alone in treating patients with CL/P in medically underserved areas.

Biodegradation of the cyanobacterial toxin microcystin LR in natural water and biologically active slow sand filters.

A bacterium (MJ-PV) previously demonstrated to degrade the cyanobacterial toxin microcystin LR, was investigated for bioremediation applications in natural water microcosms and biologically active slow sand filters. Enhanced degradation of microcystin LR was observed with inoculated (1 x 10(6) cell/mL) treatments of river water dosed with microcystin LR (>80% degradation within 2 days) compared to uninoculated controls. Inoculation of MJ-PV at lower concentrations (1 x 10(2)-1 x 10(5) cells/mL) also demonstrated enhanced microcystin LR degradation over control treatments. Polymerase chain reactions (PCR) specifically targeting amplification of 16S rDNA of MJ-PV and the gene responsible for initial degradation of microcystin LR (mlrA) were successfully applied to monitor the presence of the bacterium in experimental trials. No amplified products indicative of an endemic MJ-PV population were observed in uninoculated treatments indicating other bacterial strains were active in degradation of microcystin LR. Pilot scale biologically active slow sand filters demonstrated degradation of microcystin LR irrespective of MJ-PV bacterial inoculation. PCR analysis detected the MJ-PV population at all locations within the sand filters where microcystin degradation was measured. Despite not observing enhanced degradation of microcystin LR in inoculated columns compared to uninoculated column, these studies demonstrate the effectiveness of a low-technology water treatment system like biologically active slow sand filters for removal of microcystins from reticulated water supplies.

An interactive web-based Pseudomonas aeruginosa genome database: discovery of new genes, pathways and structures.

Using the complete genome sequence of Pseudomonas: aeruginosa PAO1, sequenced by the Pseudomonas: Genome Project (ftp://ftp.pseudomonas. com/data/pacontigs.121599), a genome database (http://pseudomonas. bit.uq.edu.au/) has been developed containing information on more than 95% of all ORFs in Pseudomonas: aeruginosa. The database is searchable by a variety of means, including gene name, position, keyword, sequence similarity and Pfam domain. Automated and manual annotation, nucleotide and peptide sequences, Pfam and SMART domains (where available), Medline and GenBank links and a scrollable, graphical representation of the surrounding genomic landscape are available for each ORF. Using the database has revealed, among other things, that P. aeruginosa contains four chemotaxis systems, two novel general secretion pathways, at least three loci encoding F17-like thin fimbriae, six novel filamentous haemagglutinin-like genes, a number of unusual composite genetic loci related to vgr/RHS: elements in Escherichia coli, a number of fix-like genes encoding a micro-oxic respiration system, novel biosynthetic pathways and 38 genes containing domains of unknown function (DUF1/DUF2). It is anticipated that this database will be a useful bioinformatic tool for the Pseudomonas: community that will continue to evolve.