Tuesday, 17 May 2016

Paenibacillus dakarensis: A new species of Bacterium from Dakar, Senegal.

Paenibacilli are Gram variable, facultatively anaerobic, and endospore forming Bacteria found in soil, water, vegetable matter and some Insects and their larvae, and sometimes found in clinical samples. They produce polysaccharide-degrading enzymes which are used in agriculture, industry and medicine. Some species are known to be able to fix nitrogen (incorporate atmospheric nitrogen into organic compounds which can then be used by other organisms), while others may be involved in infections; Foulbrood, a particularly destructive disease of Honey Bees is caused by a form of Paenibacillus.

In a paper published in the journal New Microbes and New Infections on 22 January 2016, Cheikh Lo and Senthil Sankar of the Faculté de médecine at Aix-Marseille Université, Becaye Fall and Bissoume Sambe-Ba of the Hôpital Principal de Dakar, Oleg Mediannikov of the Faculté de médecine at Aix-Marseille Université and Campus International at Université Cheikh Anta Diop de Dakar, Catherine Robert, also of the Faculté de médecine at Aix-Marseille Université, Ngore Faye of the Laboratoire de Parasitologie générale at Université Cheikh Anta Diop de Dakar, Boubakar Wade, also of the Hôpital Principal de Dakar, Didier Raoult of the Faculté de médecine at Aix-Marseille Université, Campus International at Université Cheikh Anta Diop de Dakar and the Special Infectious Agents Unit at King Abdulaziz University,  Pierre-Edouard Fournier, again of the Faculté de médecine at Aix-Marseille Université and Florence Fenollar of the Faculté de médecine at Aix-Marseille Université and the Campus International at Université Cheikh Anta Diop de Dakar, describe a new species of Paenibacillus from a blood sample taken from a sixteen month old child ar the Hôpital Principal de Dakar in March 2014.

The new species od given the specific name Paenibacillus dakarensis, meaning 'from Dakar'. It was found to be possible to culture the Bacterium on 5% sheep’s blood–enriched Columbia agar at temperatures of between 28 and 37°C, with optimum growth at 37°C. In culture the Bacteria formed small white colonies, which proved to be vulnerable to a variety of anti-biotics. It is unclear what, if any, pathogenic effects the Bacteria had in the patient.

Transmission electron microscopy of Paenibacillus dakarensis strain FF9T. Cells were observed on Tecnai G2 transmission electron microscope operated at 200 keV. Scale bar = 500 nm.

See also:

http://sciencythoughts.blogspot.co.uk/2015/05/evidence-of-leprosy-in-from-early-anglo.htmlEvidence of Leprosy in from an early Anglo Saxon grave from Essex, England.              Leprosy is caused by the Bacterium Mycobacterium leprae; it is fatal, incurable without modern antibiotics and causes serious...
http://sciencythoughts.blogspot.co.uk/2015/01/bacteria-from-biofilms-in-water-supply.htmlBacteria from biofilms in the water supply at Mafikeng, South Africa.                            South Africa has an arid climate and a rapidly rising Human population, which can place a strain on the country’s attempts to provide clean water for its entire population. Like many countries...
http://sciencythoughts.blogspot.co.uk/2012/05/john-snows-cholera-map.htmlJohn Snow's Cholera Map.                         John Snow was a nineteenth century London doctor, who is widely credited with the discovery of the transmission mechanism of Cholera, a severe and often fatal infection of the small intestine caused by the bacterium Vibrio cholerae. In Snow's time our understanding of microbiology was in its infancy...
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