Helicobacter Stocks List
Symbol | Grade | Name | % Change | |
---|---|---|---|---|
RDHL | F | Redhill Biopharma Ltd. | 0.17 | |
QDEL | F | Quidel Corporation | -1.12 |
Related Industries: Biotechnology Diagnostics & Research
Symbol | Grade | Name | Weight | |
---|---|---|---|---|
IHI | D | iShares U.S. Medical Devices ETF | 0.22 | |
ISCV | C | iShares Morningstar Small-Cap Value ETF | 0.08 | |
XJH | D | iShares ESG Screened S&P Mid-Cap ETF | 0.07 | |
ISCB | C | iShares Morningstar Small-Cap ETF | 0.04 | |
ESML | C | iShares MSCI USA Small-Cap ESG Optimized ETF | 0.04 |
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- Helicobacter
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.Some species have been found living in the lining of the upper gastrointestinal tract, as well as the liver of mammals and some birds. The most widely known species of the genus is H. pylori, which infects up to 50% of the human population. It also serves as the type species of the genus. Some strains of this bacterium are pathogenic to humans, as they are strongly associated with peptic ulcers, chronic gastritis, duodenitis, and stomach cancer.
Helicobacter species are able to thrive in the very acidic mammalian stomach by producing large quantities of the enzyme urease, which locally raises the pH from about 2 to a more biocompatible range of 6 to 7. Bacteria belonging to this genus are usually susceptible to antibiotics such as penicillin, are microaerophilic (optimal oxygen concentration between 5 and 14%) capnophiles, and are fast-moving with their flagella.
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