Helicobacter cinaedi

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Helicobacter cinaedi
Helicobacter sp 01.jpg
Scientific classification
Kingdom: Bacteria
Phylum: Proteobacteria
Class: Epsilonproteobacteria
Order: Campylobacterales
Family: Helicobacteraceae
Genus: Helicobacter
Species:H. cinaedi
Binomial name
Helicobacter cinaedi
(Totten et al. 1988) Vandamme et al. 1991

Campylobacter cinaediTotten et al. 1988

Helicobacter cinaedi is a bacterium in the family Helicobacteraceae, Campylobacterales order. It was formerly known as Campylobacter cinaedi until molecular analysis published in 1991 led to a major revision of the genus Campylobacter . [1] H. cinaedi can cause cellulitis and bacteremia in immunocompromised people. [2]

Campylobacterales order of bacteria

The Campylobacterales are an order of Proteobacteria which make up the epsilon subdivision, together with the small family Nautiliaceae. Like all Proteobacteria, they are Gram-negative. Most of the species are microaerophilic.

Molecular phylogenetics The branch of phylogeny that analyzes genetic, hereditary molecular differences

Molecular phylogenetics is the branch of phylogeny that analyzes genetic, hereditary molecular differences, predominately in DNA sequences, to gain information on an organism's evolutionary relationships. From these analyses, it is possible to determine the processes by which diversity among species has been achieved. The result of a molecular phylogenetic analysis is expressed in a phylogenetic tree. Molecular phylogenetics is one aspect of molecular systematics, a broader term that also includes the use of molecular data in taxonomy and biogeography.

Cellulitis Human disease

Cellulitis is a bacterial infection involving the inner layers of the skin. It specifically affects the dermis and subcutaneous fat. Signs and symptoms include an area of redness which increases in size over a few days. The borders of the area of redness are generally not sharp and the skin may be swollen. While the redness often turns white when pressure is applied, this is not always the case. The area of infection is usually painful. Lymphatic vessels may occasionally be involved, and the person may have a fever and feel tired.



This species is able to dart around using its single polar flagellum. Its cells are spiral to rod-shaped. [3]

Flagellum part of a cell of some organisms

A flagellum is a lash-like appendage that protrudes from the cell body of certain bacteria and eukaryotic cells termed as flagellates. A flagellate can have one or several flagella. The primary function of a flagellum is that of locomotion, but it also often functions as a sensory organelle, being sensitive to chemicals and temperatures outside the cell. The similar structure in the archaea functions in the same way but is structurally different and has been termed the archaellum.

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Proteobacteria phylum of Gram-negative bacteria

Proteobacteria is a major phylum of gram-negative bacteria. They include a wide variety of pathogens, such as Escherichia, Salmonella, Vibrio, Helicobacter, Yersinia, Legionellales and many other notable genera. Others are free-living (non-parasitic) and include many of the bacteria responsible for nitrogen fixation.

<i>Helicobacter pylori</i> Species of bacteria

Helicobacter pylori, previously known as Campylobacter pylori, is a Gram-negative, microaerophilic bacterium usually found in the stomach. It was identified in 1982 by Australian scientists Barry Marshall and Robin Warren, who found that it was present in a person with chronic gastritis and gastric ulcers, conditions not previously believed to have a microbial cause. It is also linked to the development of duodenal ulcers and stomach cancer. However, over 80% of individuals infected with the bacterium are asymptomatic, and it may play an important role in the natural stomach ecology.

<i>Helicobacter</i> genus of bacteria

Helicobacter is a genus of Gram-negative bacteria possessing a characteristic helical shape. They were initially considered to be members of the genus Campylobacter, but in 1989, Goodwin et al. published sufficient reasons to justify the new genus name Helicobacter. The genus Helicobacter contains about 35 species.

<i>Campylobacter jejuni</i> species of bacterium

Campylobacter jejuni is one of the most common causes of food poisoning in Europe and in the United States. The vast majority of cases occur as isolated events, not as part of recognized outbreaks. Active surveillance through the Foodborne Diseases Active Surveillance Network (FoodNet) indicates that about 14 cases are diagnosed each year for each 100,000 persons in the population. The European Food Safety Authority estimated in 2011 that there are approximately nine million cases of human campylobacteriosis per year in the European Union.

Campylobacteriosis genus of Gram-negative bacteria

Campylobacteriosis is an infection by the Campylobacter bacterium, most commonly C. jejuni. It is among the most common bacterial infections of humans, often a foodborne illness. It produces an inflammatory, sometimes bloody, diarrhea or dysentery syndrome, mostly including cramps, fever and pain.

<i>Campylobacter fetus</i> species of bacterium

Campylobacter fetus is a species of Gram-negative, motile bacteria with a characteristic "S"-shaped rod morphology similar to members of the genus Vibrio. Like other members of the genus Campylobacter, C. fetus is oxidase-positive.

Timeline of peptic ulcer disease and <i>Helicobacter pylori</i> timeline of the events relating to the discovery that peptic ulcer disease and some cancers are caused by H. pylori

This is a timeline of the events relating to the discovery that peptic ulcer disease and some cancers are caused by H. pylori. In 2005, Barry Marshall and Robin Warren were awarded the Nobel Prize in Physiology or Medicine for their discovery that peptic ulcer disease (PUD) was primarily caused by Helicobacter pylori, a bacterium with affinity for acidic environments, such as the stomach. As a result, PUD that is associated with H. pylori is currently treated with antibiotics used to eradicate the infection. For decades prior to their discovery, it was widely believed that PUD was caused by excess acid in the stomach. During this time, acid control was the primary method of treatment for PUD, to only partial success. Among other effects, it is now known that acid suppression alters the stomach milieu to make it less amenable to H. pylori infection.

<i>Elizabethkingia meningoseptica</i> species of bacterium

Elizabethkingia meningoseptica is a gram-negative rod-shaped bacterium widely distributed in nature. It may be normally present in fish and frogs; while it may be isolated from chronic infectious states, as in the sputum of cystic fibrosis patients. In 1959, the American bacteriologist Elizabeth O. King was studying unclassified bacteria associated with pediatric meningitis at the Centers for Disease Control and Prevention in Atlanta, when she isolated an organism that she named Flavobacterium meningosepticum. In 1994, it was reclassified in the genus Chryseobacterium and renamed Chryseobacterium meningosepticum(chryseos = "golden" in Greek, so Chryseobacterium means a golden/yellow rod similar to Flavobacterium). In 2005, a 16S rRNA phylogenetic tree of Chryseobacteria showed that C. meningosepticum along with C. miricola were close to each other but outside the tree of the rest of the Chryseobacteria and were then placed in a new genus Elizabethkingia named after the original discoverer of F. meningosepticum.

Helicobacter cellulitis is a cutaneous condition caused by Helicobacter cinaedi. H. cinaedi can cause cellulitis and bacteremia in immunocompromised people.

Cedecea is a genus of extremely rare bacteria of the family Enterobacteriaceae. The name of this genus was derived from CDC, the abbreviation for the Centers for Disease Control where the initial members of this genus were discovered. This genus resembles no other group of Enterobacteriaceae. Cedecea bacteria are Gram-negative, bacillus in shape, motile, nonencapsulated, and non-spore-forming. The strains of Cedecea appear to be similar to those of Serratia. Both Cedecea and Serratia are lipase positive and resistant to colistin and cephalothin; however, Cedecea is unable to hydrolyze gelatin or DNA.

Arcobacter is a genus of Gram-negative, spiral-shaped bacteria in the class Epsilonproteobacteria. It shows an unusually wide range of habitats, and some species can be human and animal pathogens. Species of the genus Arcobacter are found in both animal and environmental sources, making it unique among the epsilonproteobacteria. This genus currently consists of five species: A. butzleri, A. cryaerophilus, A. skirrowii, A. nitrofigilis, and A. sulfidicus, although several other potential novel species have recently been described from varying environments. Three of these five known species are pathogenic. Members of this genus were first isolated in 1977 from aborted bovine fetuses. They are aerotolerant, Campylobacter-like organisms, previously classified as Campylobacter. The genus Arcobacter, in fact, was created as recently as 1992. Although they are similar to this other genus, Arcobacter species can grow at lower temperatures than Campylobacter, as well as in the air, which Campylobacter cannot.

Helicobacter canis is a bacterium in the Helicobacteraceae family, Campylobacterales order. Its type strain is NCTC 12739T. It colonises the lower bowel, but is also present in cases of hepatitis. Besides infecting dogs, this bacterium is known to cause infections in immunocompromised humans.

Campylobacter lari is a species of nalidixic acid-resistant, thermophilic, microaerophilic bacteria first isolated from human faeces. It shows anaerobic growth in the presence of trimethylamine N-oxide hydrochloride. Its type strain is NCTC 11352. It is commonly found in sea gulls. In humans, it has been involved in cases of enteritis, severe abdominal pain and terminal bacteremia.

Acinetobacter junii is a species of bacteria. Its type strain is ATCC 17908. It can be pathogenic. This bacterium has been linked to nosocomial infections including catheter-related blood stream infections and cellulitis.

Helicobacter felis is a bacterium in the Helicobacteraceae family, Campylobacterales order. It can be pathogenic. It is part of the gastric mucosa of cats, and is Gram-negative, microaerophilic, urease-positive, and spiral-shaped. Its type strain is CS1T.

Tsukamurella inchonensis is a bacterium with type strain IMMIB D-771T.

Campylobacter showae is a species of Campylobacter found in humans. It is gram-negative, straight rod-shaped, motile by means of multiple unipolar flagella. It is asaccharolytic and prefers an anaerobic atmosphere. SU A4 is its type strain. Its genome has been sequenced.

Dietzia is a Gram-positive bacterial genus from the family of Dietziaceae which occur in many different habitats including humans and animals. The species Dietzia maris is a human pathogen. The genus Dietzia is named after the American microbiologist Alma Dietz.

Bergeyella is a rod-shaped, Gram-negative, aerobic, non-spore-forming and non-motile genus from the family of Flavobacteriaceae.

<i>Bergeyella zoohelcum</i> species of bacterium

Bergeyella zoohelcum is a Gram-negative, rod-shaped, aerobic and non-motile bacterium from the genus of Bergeyella which occurs in the upper respiratory tract of dogs and cats Bergeyella zoohelcum can cause respiratory disease in cats. Bergeyella zoohelcum can cause infections after dog bites.


  1. Vandamme P, Falsen E, Rossau R, Hoste B, Segers P, Tytgat R, De Ley J. "Revision of Campylobacter, Helicobacter, and Wolinella taxonomy: emendation of generic descriptions and proposal of Arcobacter gen-nov". International Journal of Systematic Bacteriology. 41 (1): 88–103. doi:10.1099/00207713-41-1-88. PMID   1704793.
  2. Kiehlbauch JA, Tauxe RV, Baker CN, Wachsmuth IK (1994). "Helicobacter cinaedi-associated bacteremia and cellulitis in immunocompromised patients". Annals of Internal Medicine. 121 (2): 90–93. doi:10.7326/0003-4819-121-2-199407150-00002.
  3. Garrity GM, Brenner DJ, Krieg NR, Staley JT (eds.) (2005). Bergey's Manual of Systematic Bacteriology, Volume Two: The Proteobacteria, Part C: The Alpha-, Beta-, Delta-, and Epsilonproteobacteria. New York, New York: Springer. ISBN   978-0-387-24145-6.