nanobacteria


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nanobacteria

(nă′nō-băk-tēr-ē-ă)
A controversial entity, formerly thought to be the smallest known bacteria with intact gram-negative cell walls. They are now suspected of being inorganic precipitates of calcium carbonate.

nanobacteria

Micro-organisms less than 0.1 (micrometre) long and surrounded by a mineralized shell, that were first described in mid-1998. It is claimed that cells infected with these bacteria develop mineral deposits and suggested that they may be the cause of kidney stones and a range of other diseases that feature calcification. Critics have suggested that these are simply normal bacteria that have shrunk and become calcified. Further study is required.

nanobacteria

very small, nano-sized (about 20–200 nm in diameter) putative bacteria, representing the smallest known replicating bacteria. They have been detected in blood of humans and animals. Their small size means that they can pass through sterile filters (0.1 μm pore size). The species name Nanobacterium sanguineum reflects the small size and habitat. Nanobacteria appear to belong to the Proteobacteria (see PURPLE BACTERIA or to be ancestors of the group. They are believed to cause calcification in many human pathological states, such as kidney stones.

Particles resembling the nanobacteria have been found in sedimentary rock/Martian meteorite. These have been termed Nannobacteria.

It should be noted that there are opponents of the nanobacteria hypothesis, who claim that nanobacteria are smaller than the minimum possible for living cells and are instead artefacts of chemical/geochemical reactions of non-living material.

References in periodicals archive ?
Characteristics of nanobacteria and their possible role in stone formation.
No one knows where nanobacteria originate any more than we know where viruses or other bacteria come from.
On a parallel track, research began on other organisms, such as Helicobacter pylori, herpes simplex virus, cytome galovirus, (3) and, most recently, nanobacteria.
The concept that nanobacteria are living organisms is still controversial because the research on their putative nucleic acid has not been completed yet," states lead researcher Neva Ciftcioglu.
NASA researchers say that low-gravity conditions appear to promote the growth of tiny particles called nanobacteria (NB)--a finding that may be linked to the rapid formation of kidney stones in astronauts during space travel.
The Calcium Bomb: The Nanobacteria Link To Heart Disease & Cancer is a breakthrough work by journalist Douglas Mulhall and biological engineer Katja Hansen.
Investigation for the presence of nanobacteria in the multiple organs involved in systemic calciphylaxis may be of help in elucidating the pathogenesis of this frequently fatal disorder.
Our worldwide demand for CNP diagnostic products is increasing as CNPs or nanobacteria are implicated in more and more chronic diseases," stated Dr.
nanobacteria Objects once thought to be submicroscopic bacteria turn out to be balls of protein and calcium carbonate, but scientists continue to investigate the nanoscale spheres' link to disease (SN: 5/10/08, p.
for the production of two blood tests for the detection of Nanobacteria.