Tag Archives: bacteria

“Is this the perfect storm — an exploding population of opportunistic Gram-negative bacteria (some natural, some not), millions of gallons of food (oil) for the bacteria, and a susceptible population of stressed-out people?” Excerpt: I have heard from Gulf residents and visitors who developed a rash or peeling palms from contact with Gulf water, including such activities as swimming or wading, getting splashed, handling oiled material or dead animals without gloves, and shucking crabs from the recently opened Gulf fisheries. I have also heard from people who developed the same symptoms after contact with Gulf air by wiping an oily film off their airplane's leading edges after flying over the Gulf (absorbent pad tested positive for oil) or swimming in outdoor pools, or splashing in puddles, after it rained. Outraged by the unprecedented release of oil and toxic chemicals in the Gulf, Nurse Schmidt and Mike McDowell developed a project to test Gulf rainwater for harmful chemicals. Schmidt said, “We are convinced the chemicals used in the Gulf to help disperse oil have evaporated and will eventually come down mixed with the rain.” Another clue, more like a condemnation, is that NOAA and EPA decided to use dispersants in the Gulf without considering what harm the chemicals and dispersed oil might do to people, specifically, the general public. Dr. Sylvia Earle, former chief scientist of NOAA, and other scientists, criticized the agencies' decision, in part, based on concern about harm to human health. Other scientists have also criticized the agencies' decision. Citing the National Academy of Sciences, a Texas Tech University professor testified in Congress that the chemicals break down cell walls, making organisms (including people) more susceptible to oil. The professor called the Gulf an “eco-toxicological experiment,” which is inexcusable, because OSHA has known about harm from solvent exposure since at least 1987. Don't these federal agencies talk amongst themselves — or with others? Which all brings me back to the grandmother. After talking with her, I've been reading about bacteria, and I now think the Great Gulf Experiment is going very badly for humans. One can only wonder about the rest of the ecosystem. There are two distinct types of bacteria based on the structure of their cell walls. Gram-positive bacteria have a single-membrane cell wall, while Gram-negative bacteria have a double-membrane cell wall. Methicillin-resistant Staphylococcus aureus (MRSA) bacteria are “Gram-positive,” while the oil-eating bacteria are Gram-negative. But! A component of the double-membrane cell wall structure of Gram-negative bacteria can irritate human skin, causing inflammation and activating the immune system. In other words, oil-eating bacteria, just because they are Gram-negative, can cause skin rashes. In the case of Alcanivorax borkumensis, the reaction can erupt on the skin like MRSA infections. To make things a little scarier, some of the oil-eating bacteria have been genetically modified, or otherwise bioengineered, to better eat the oil — including Alcanivorax borkumensis and some of the Pseudomonas. Oil-eating bacteria produce bio-films. According to Nurse Schmidt, studies have found that bio-films are rapidly colonized (p. 97) by other Gram-negative bacteria — including those known to infect humans. Scientists anticipated early on that the Gulf leak would cause populations of oil-eating bacteria to soar. Still, infections are not likely in healthy people. However, exposure to oil weakens a person's immune system function, as does the mental stress of dealing with disaster trauma. And then there are people who are more at risk than others to bacterial infections, especially when first challenged with oil and solvent exposure. This includes children, people with cystic fibrosis or asthma, and African Americans (who are prone to blood disorders), to name a few. Is this the perfect storm — an exploding population of opportunistic Gram-negative bacteria (some natural, some not), millions of gallons of food (oil) for the bacteria, and a susceptible population of stressed-out people? Perhaps. If the outbreak of skin rashes across the Gulf is any indication, the health care providers, media, and Congress ought to be taking a hard look at this question. Further, people ought to be connecting the dots to illnesses that surfaced in Exxon Valdez spill responders and to the illnesses occurring now in Michigan residents coping with the Enbridge oil pipeline spill. In the Gulf, Nurse Schmidt believes: This is like a major bacterial storm. It could be the reason we are seeing a variance of symptoms in different individuals. In some people, we see respiratory complications, while in others we see skin or GI symptoms. I think it is due to a multitude of colonized bacteria — which may have been triggered by BP's disaster. added by: samantha420