Wait a second!
More handpicked essays just for you.
More handpicked essays just for you.
Listeria monocytogenes paper
Listeria monocytogenes paper
Listeria monocytogenes paper
Don’t take our word for it - see why 10 million students trust us with their essay needs.
Recommended: Listeria monocytogenes paper
The Effect of Listeriosis in Ovine Vs. Bovine
Introduction
Listeria, also referred to by the name Listeriosis, is an infection that is caused by eating contaminated food containing the bacterium Listeria Monocytogenes. This particular disease can affect not only animals, but also older adults, pregnant women, newborns, and adults with weakened immune systems. When looking at these bacteria under a microscope, they appear to be small and rod-like and can sometimes be seen arranged in short chains (See Fig. 1). Because there are different species of Listeria, it may take further characterization in order to distinguish between each one. Listeria can be found in several different locations and factors. Soil is a big one, if the soil
…show more content…
Depending also on the species, some cases of septicemia, abortion and latent infection may occur. Septicemia is poisoning of the blood and occasionally organs. Abortions can occur in the last trimester. Fetuses usually die in utero but stillbirths still occur frequently, and the abortion rate varies depending on species. Latent infection is an infection that does not always produce visible signs of a disease, but may be transmitted to another host. As far as recovery and treatments are concerned, there is possibility to catch the symptoms early and treat it with aggressive antibiotics. Listeria Monocytogenes are susceptible to penicillin (the drug of choice). High doses are required required due to the difficulty of of achieving minimum bacterial concentrations in the brain. The treatment should be continued one to two weeks. Supportive electrolytes and and fluids should also accompany the injections for the animal. In some cases though death is going to occur if the bacteria has completely taken over. At that point aggressive treatment may help for a short period of time but ultimately will not have any
The first day an unknown sample was assigned to each group of students. The first test applied was a gram stain to test for gram positive or gram-negative bacteria. The morphology of the two types of bacteria was viewed under the microscope and recorded. Then the sample was put on agar plates using the quadrant streak method for isolation. There were three agar plates; one was incubated at room temperature, the second at 30 degrees Celsius, and the third at 37 degrees Celsius. By placing each plate at a different temperature optimal growth temperature can be predicted for both species of bacteria.
They can be found anywhere and identifying them becomes crucial to understanding their characteristics and their effects on other living things, especially humans. Biochemical testing helps us identify the microorganism present with great accuracy. The tests used in this experiment are rudimentary but are fundamental starting points for tests used in medical labs and helps students attain a better understanding of how tests are conducted in a real lab setting. The first step in this process is to use gram-staining technique to narrow down the unknown bacteria into one of the two big domains; gram-negative and gram-positive. Once the gram type is identified, biochemical tests are conducted to narrow down the specific bacterial species.
However with septic shock the symptoms may be worse as the patient may experience tachyeordia and tachypnae, leucocytosis which is a high count of white blood cells, change in metal state for example confusion and hyperglycaemia which is a deficiency of glucose in the bloodstream. The diagnosis for sepsis and septic shock involve using blood cultures which is where bacteria is detected in blood which may have spread from a different part of the body. Blood cultures are taken mostly to be done on new-borns and young children who have the symptoms of sepsis. If the blood culture tests positive there is a bacterial or fungal infection which needs to be treated immediately as it is life-threatening. Also cytokines are used as they can destroy the infection however there is a problem with this diagnosis as excessive production can cause tissue and organ
Bacteria play a large role in our health, the environment, and most aspects of life. They can be used in beneficial ways, such as decomposing wastes, enhancing fertilizer for crops, and breaking down of substances that our bodies cannot. However, many bacteria can also be very harmful by causing disease. Understanding how to identify bacteria has numerous applications and is incredibly important for anyone planning to enter the medical field or begin a career in research. Having the background knowledge of identifying an unknown bacteria may one day aid healthcare professionals diagnose their patient with a particular bacterial infection or help researchers determine various clinical, agricultural, and numerous other uses for bacteria.
Capriotti & Frizzell (2016) explain that sepsis is often seen in those who have a weak immune system. These individuals are at an increased risk of developing sepsis from microorganisms that a healthy immune system would normally fight off (Capriotti et al. 2016). The elderly, infants, and immunosuppressed patients are the most at risk for developing the condition (Capriotti et al. 2016). Sepsis can be caused by any microbe, but is most often caused by bacteria (Capriotti et al. 2016). Since sepsis has such a broad reach and can develop as a secondary infection after an initial injury or illness, Capriotti & Frizzell (2016) further explain the di...
Infection with C. perfringens as a food-borne illness is acquired from consumption of food or water that has come in contact with the bacterium. Some possibilities include unwashed fruits and vegetables, undercooked me...
The Use of Antibiotics and Hormones in Animal Feed Antibiotics are chemicals produced by living organisms that are used to kill or inhibit the growth of other infectious micro-organisms. Most antibiotics prevent the growth of microorganisms, which they act on instead of completely killing them. Antibiotics are extra cellular products meaning that they can be extracted for use; Penicillin is an example of this as it comes from the fungus Penicillium notatum1. Hormones are chemicals that transfer information and instructions between cells in animals and plants. They regulate growth and development, controlling the function of various tissues.
Listeria monocytogenes, a motile, gram-positive rod, is an opportunistic food-borne pathogen capable of causing listeriosis in humans. Listeriosis includes manifestations of septicemia, meningitis, pneumonia, and encephalitis. L. monocytogenes is also implicated in miscarriages, stillbirth, and premature birth for pregnant women. L. monocytogenes is a tough bacterium resistant to freezing, drying, and heat; most strains have been shown to be pathogenic. It is hypothesized that 1-10% of humans are intestinal carriers of L. monocytogenes. Over 37 mammalian species, including wild and domestic animals, are capable of L. monocytogenes infection and transmission. Extensive environmental reservoirs for L. monocytogenes include soil, water, vegetation, sewage, silage, and the intestinal tract of various animals.
Mother has just gotten back from the grocery store. She's loading up the refrigerator with chicken, fish, and eggs--no red meat once again. Oblivious to the complaints about father saying the risk to human health from Mad Cow Disease is low and that he has got to have his meat. What can I say? A man has got to have his red, red meat. It has only been less than a year since the World Reference Laboratory has confirmed that a cow killed in Alberta, Canada was tested positive for bovine spongiform encephalopathy (BSE) also known as Mad Cow Disease among the public. But that was not the news that got mother going through red-meat paranoia. This past Christmas, it was found that a cow in Washington of the US of A, was positive for mad cow. If my word dissection is correct, the disease can be broken down to enceph meaning the brain and pathy meaning disease.* Overall, it is a disease that turns the brain into a sponge-like chunk of meat.
The horse’s hoof is susceptible to many infections and unsoundnesses. These problems can be biological in nature, arising as a result of bacterial, viral, or fungal infections. Others are derived from issues of neglect, exposure to factors that can cause unsoundnesses, or encounters with septic conditions. Unsoundnesses can occur in horses of all ages but older horses are more susceptible to them. The time of year plays a part in what infections or unsoundnesses the horse can contract. For example thrush is common in the winter when conditions are muddy. This infection can be serious in the event that it is not taken care of so a horse owner must know what it is, how to treat it, and how to prevent the horse or horses from getting it.
“ Sepsis” according to the International Surviving Sepsis Campaign, is defined as the presence of infection together with systemic manifestations of infection (Dellinger et al., 2013) In todays modern society sepsis still accounts for 15% of maternal deaths a year worldwide (Dolea & Stein, 2003). Despite medical advances, aseptic technique, and antibiotic use, sepsis is the most common cause of direct maternal death in the UK. According to the CMACE report the maternal mortality rate increased from 0.85 deaths per 100,000 maternities in 2003–05 to 1.13 deaths in 2006–08 (Harper, 2011). Puerperal sepsis has a long history within obstetrics and midwifery, and yet despite this knowledge it has become, yet again, the leading cause of direct maternal death. Therefore due to the increased maternal mortality, I have chosen to focus on the care of a woman within ...
Using antibodies in cattle is a big ordeal to some. Antibodies are to help the cow cure any sickness and prevent anything from spreading. When cows get a sickness such as pinkeye or pneumonia etc. an antibiotic called LA200 is used. LA200 can be used for almost all illnesses in any livestock. In our herd we use it a lot because if a cow gets sick we do not want the others to catch it. With using antibiotics it also has its setbacks. Since we use antibiotics for our cattle certain places will not purchase the cattle because they are not all natural such Chipotle. Also when giving the cows a needle injection of antibodies, the meat around the needle puncture is no longer edible. This topic is important because we are a ranch family with a little
The most commonly recognized food borne infections are those caused by the bacteria Campylobacter, Salmonella, and E. coli 0157:H7, and by a group of viruses called Calicivirus, also know as the Norwalk viruses. “Thousands of types of bacteria are naturally present in our environment, but not all bacteria cause disease in humans.” (Schmutz 1)
Cattle mastitis is regarded as the most prevalent and economically important disease on all continents, with annual great losses in the dairy industry worldwide[1]. A wide variety of microorganisms have been found as etiological agents of mastitis in cattle[2]. In addition to bacterial agents, several other groups of microorganisms such as fungi and algae from Prototheca genus capable of inducing an inflammatory process in the udder[2]. Yeasts are groups of unicellular opportunistic organisms, ever present in the natural surroundings of dairy cattle and are normal inhabitants of the skin of the udder and teats, in which they exist in low numbers [3].
A GBS positive mother in the second phase of labor (birth of the newborn), puts the newborn at risk for the bacterium to cross over. If a newborn becomes GBS positive, the infection can cause neonatal morbidity and mortality; through respiratory distress, meningitis, sepsis, and heart and blood pressure instability (Noar, Blumenfeld, Merzbach, Timor-Trisch, & Zeltzer, 1982). It is vital that we prevent this cross-over of GBS through antibiotic administration of Penicillin G, as per RUH protocol. Penicillin G is the first-line of treatment and is usually administered IV at least 4 hours before birth to reduce the risk while the mother delivers and it’s important to monitor mother for any severe allergic reactions because they can occur rapidly (Chow et al., 2013). The nurse managed to start the Penicillin G at 0830 and then Syntocinon shortly after the antibiotic was done. She had no past medical history with no complications other than the GBS positive. We strapped on the Electronic Fetal Monitor (EFM) to get some readings of the fetal heart rate in relation to her contractions. The FHR was baselining at 145 with moderate