gas gangrene

Examples of gas gangrene in the following topics:

• Gangrene

  • Diabetes and long-term smoking increase the risk of suffering from gangrene.
  • The gangrenous tissue most often detaches spontaneously .
  • Gas gangrene is a bacterial infection that produces gas within tissues.
  • Because of its ability to quickly spread to surrounding tissues, gas gangrene should be treated as a medical emergency.
  • Compare and contrast the different types of gangrene: dry, wet, gas, noma, fournier gangrene and necrotizing fasciitis

• Ergot Poisoning

  • The symptoms which present in individuals with ergot poisoning can be classified as convulsive symptoms and gangrenous symptoms.
  • The gangrenous symptoms are a result of vasoconstriction induced by the alkaloids.

• Gas Vesicles

  • There is a simple relationship between the diameter of the gas vesicle and pressure at which it will collapse - the wider the gas vesicle the weaker it becomes.
  • However, wider gas vesicles are more efficient.
  • They provide more buoyancy per unit of protein than narrow gas vesicles.
  • This will select for species with narrower, stronger gas vesicles.
  • Discuss the role of a gas vesicle in regards to survival

• Edible Fungi

  • Even before the discovery of penicillin, people used blue cheese to prevent gangrene in wounds.

• Gas Requirements

  • Cells are grown and maintained at an appropriate temperature and gas mixture of oxygen, carbon dioxide, and nitrogen in a cell incubator.
  • Cells are grown and maintained at an appropriate temperature and gas mixture (typically, 37°C and a mixture of oxygen, carbon dioxide, and nitrogen) in a cell incubator .
  • Diazotrophs are microorganisms that fix atmospheric nitrogen gas into a more usable form such as ammonia.
  • Cells are grown and maintained at an appropriate temperature and gas mixture of oxygen, carbon dioxide, and nitrogen in a cell incubator.

• Toxins

  • Ergotism is characterized by detrimental effects on the vascular system in particular, including vasoconstriction of blood vessels resulting in gangrene, and eventually, limb loss if left untreated.

• Detecting Acid and Gas Production

  • Culture media can be used to differentiate between different kinds of bacteria by detecting acid or gas production.
  • The Durham tube method is used to detect production of gas by microorganisms.
  • If gas is produced after inoculation and incubation, a visible gas bubble will be trapped inside the small tube.

• Metabolomics

  • The term "metabolic profile" was introduced by Horning, et al. in 1971, after they demonstrated that gas chromatography-mass spectrometry (GC-MS; ) could be used to measure compounds present in human urine and tissue extracts.
  • GC-MS is a method that combines the features of gas-liquid chromatography and mass spectrometry to identify different substances within a test sample.
  • Separation methods: Gas chromatography, especially when interfaced with mass spectrometry (GC-MS), is one of the most widely used and powerful methods.
  • Gas chromatography–mass spectrometry (GC-MS) is a method that combines the features of gas-liquid chromatography and mass spectrometry to identify different substances within a test sample.

• Cold-Seep Ecosystems

  • Cold seeps can also be distinguished in detail, as follows: oil/gas seeps, gas seeps, methane seeps, gas hydrate seeps, brine seeps, are forming brine pools, pockmarks and mud volcanos.
  • Aggregating into bacterial mats at cold seeps , these bacteria metabolize methane and hydrogen sulfide (another gas that emerges from seeps) for energy.
  • As the rate of gas seepage slowly decrease, the shorter-lived, methane-hungry mussels (or more precisely, their methane-hungry bacterial symbionts) start to die off.

• Oxygen

  • The GasPak System is an isolated container that achieves an anaerobic environment by the reaction of water with sodium borohydride and sodium bicarbonate tablets to produce hydrogen gas and carbon dioxide.
  • Hydrogen then reacts with oxygen gas on a palladium catalyst to produce more water, thereby removing oxygen gas.