ipl-logo

Listeriosis: Foodborne Infection

954 Words4 Pages

Mapadimeng khomotso
17m5423
What is listeriosis?
Listeriosis is a foodborne infection caused by a motile, rod-shaped, gram-positive, and food-borne bacteria called listeria commonly found in contaminated food (D, 2004). It is most likely to infect people who have a compromised immune system, pregnant women, older people, newborn, birds, and animals and it can give rise to meningitis and encephalitis.
Listeria monocytogene discussion
It is a foodborne pathogen which can infect both humans and animals. Structurally it is rod-shaped and it falls under gram-positive bacteria since it doesn't have an outer cell membrane. It lacks spore formation capability unlike most bacterial and it can make ATP by the process of aerobic respiration should there …show more content…

Since the stomach is highly acidic by a PH range of 1 to 2 the listeria survives that acidic medium and it is passed down the small intestines with the food bolus then When it is in the intestines it targets different areas of the intestinal epithelium such as payer’s patches and intestinal villi. It targets the tip of the villi where apoptotic cells are removed or the lateral goblet cells specializing in mucus secretion. The crossing of intestinal barrier starts with the interaction of the listeria protein called internalin-A with E-cadherin which is a specific receptor of the cell. Afterward, the bacteria then enter the goblet cell to the lamona propea to the bloodstream it then secrets lysine-O toxin that makes pores on the phospholipid membrane through which ions pass in and out leading to ion imbalance of the cell which then promotes bacterial entrance by zipper mechanism by compromising cell internal processes and organelles. The excess calcium entering the cell causes ionic imbalance leading to (1) mitochondrial fragmentation (2) histone dephosphorylating (3) transcription complications and ion desumoylation. The bacteria then release LNTA and other virulence factors to rapture the membranes of the cell and it to repress gene expressions. it modifies itself and becomes resistant to immune cell response factors such as phagocytes .it also secretes ACT-A that will enhance the rapid growth of actin

Show More
Related

Exercise 14 Unknown Identification Lab Report

449 Words | 2 Pages

The second ½ of the organism was used for gram staining. The gram stain method was performed on the unknown organism per lab manual page 42 and two gram stain reactions were identified. Organism B was gram positive cocci in grape like clusters. Because organism B was positive I could eliminate Escherichia coli, Enterobacter aerogenes and Proteus vulgaris because these bacteria would be rod shapes. Organism A was gram negative pink rod shaped and because of gram positive morphology I could eliminate Staphylococcus aureus, Streptococcus lactis and Bacillus subtilis.

Read More

Est1 Task 2

839 Words | 4 Pages

TASK 2 Infectious diseases are the invasion of host organisms, (microbes) which can be invisible to the eyes. The microbes are also known as pathogens. A microbe infects an organism (which is known as the host of the microbe). In a human host, the microorganism causes a disease by either disrupting an important body process or by stimulating the immune system to mount a defensive reaction. The pathogen, interferes with the normal functioning of the host and can lead to chronic wounds, gangrene, loss of an infected limb, and even death.

Read More

Unknown Bacteria Lab Report

1200 Words | 5 Pages

The purpose of this lab report is to employ a myriad of skills, tools and, methods learned throughout this semester to perform the appropriate tests for the identification of the assigned unknown bacteria. Add more background information here!!! The most important tools and techniques used during this identification include aseptic technique, microscopic examination and, the use of selective and differential media. Aseptic technique is an important tool for microbiologists. It is imperative that aseptic technique is maintained throughout the length of any test to avoid any cross-contamination that may lead to inaccurate results.

Read More

Unknown Lab Report Essay

408 Words | 2 Pages

The unknown bacteria was then tested on multiple selective and differential media. Growth was present on the MacConkey Agar and the colonies were the same color as the plate, which told me my bacteria was gram negative and did not ferment lactose. There was no growth on the Mannitol Salt Agar, and this told me the unknown was not salt tolerant and did not

Read More

Unknown Lab Report

1444 Words | 6 Pages

These microorganisms are used to teach us how multicellular organisms came to be and how they can survive today. These small, microscopic organisms are so unique that the identification of them is paramount in the advancements of science. Knowing the chemical makeup, the shape, and the biochemical processes is important in identifying these organisms to understand how they survive and where. A number of tests can be ran on an unknown bacteria to determine their ideal

Read More

Colistin Case Study

2242 Words | 9 Pages

Enterobacteriaceae - Enterobacteriacaea is a family of gram-negative, anaerobic, rod-shaped bacteria that are usually motile and consist of saprophytes and parasites of worldwide distribution. They can be found in soil, water, plants and animals. Q2I: Mutation - Mutation is an inheritable change in the base sequence of the genome of an organism.   Question Set 3: Q3A: The authors hypothesized that colistin resistance was spreading by horizontal gene transfer as opposed to mutation.

Read More

Informative Essay On Chipotle

1448 Words | 6 Pages

It is also stated some Exclusions and hygiene practice Some common types of food poisoning are succeeding Salmonella, Campylobacter, Cryptosporidium, Ecoli O157, Listeria Monocytogenes, Shigella - Bacillary Dysentery, Small Round Structured Virus. In Campylobacter, Symptoms include an overall feeling of disease, diarrhea, severe abdominal pain, high fever and sometimes vomiting. First symptoms can take up to 4 days from the eating of polluted food, but is more usually 12 - 48 hours. This infection normally continues 3 weeks but can last longer. This contagion is caused by large numbers of bacteria living on food.

Read More

Cja 100 Assignment 3.1

641 Words | 3 Pages

PHAR 100 Assignment 3 1. Antibiotics are a form of medicine that seek out and destroy the bacteria that make us feel sick. Antibiotics work great against bacteria, however they don’t work against viruses. Penicillin was the first antibiotic to be discovered by Alexander Fleming, and it was first used to treat infections. Essentially, these powerful medicines fight bacterial infections, and have the potential to save lives.

Read More

Kingdomss Of Life: Protist Kingdom And Archaebacteria Kingdoms

706 Words | 3 Pages

This type of bacteria is normally a chemotroph however some are actually photosynthetic and will absorb sunlight to obtain energy. Eubacteria is a simple cell with rough walls. This type of bacteria is seen with a flagella which is a tail-like structure attached to the cell. Eubacteria can be found in nearly every environment such as soil, oceans and deserts. While some bacteria are autotrophs and are photosynthetic on the other hand some are heterotrophs for example, parasites that live on the host and decomposers.

Read More

How Did Lister Use Water To Prevent Infection

307 Words | 2 Pages

After he found the cause of infection, Lister began to find ways to prevent infection. He had read about a chemical called carbolic acid that was poured on fertilizer to stop the spread of disease. Unfortunately, carbolic acid was so strong that it could burn skin, so Lister had to mix it with water to prevent it from harming the patient too much. The first time he used carbolic acid was on an eleven-year-old boy who had broken his leg. Lister covered the boy’s leg with a cloth covered in carbolic acid and the wound healed with no infection.

Read More

Helicobacter Pylori Research Paper

878 Words | 4 Pages

Helicobacter pylori usually infect the person’s stomach, normally during childhood. While this infection of bacteria doesn’t cause harms in most cases, still it can cause diseases in few people. For their survival in your stomach, the bacteria change the surrounding around them by lowering the acidity in order to survive. Their spiral shape allows them to penetrate your stomach protective lining called mucus; where your body’s immune cells cannot reach. Thus, bacteria can easily interfere with your body’s immune response to make sure they don’t get destroyed.

Read More

Staphylococcus Epidermidis Research Paper

452 Words | 2 Pages

After experiment on microscope under oil immersion, I learned that my Unknown is gram positive. Under the lens, the bacteria appears in purple color. Its morphology is cocci arranged in cluster. However, during decolorizing process, I put too much alcohol to the crystal violet-iodine complex making the color overly removed. That led to the result of my gram positive has slightly redish

Read More

Terrorist Attacks In The 1980s

261 Words | 2 Pages

There multiple strains of the bacteria which cause different reactions. This bacteria was placed in local salad bars by the Rajneeshpuram members to infect the local population (Davisson 2003, 1) (Hilow, 1995). A similar event, on a larger scale could be used today to sicken or kill hundreds or even thousands of people in the United States. One possible way to accomplish this is to infect crops such as lettuce which have porous skins and easily carry biological agents.

Read More

Global Warming's Effect On Marine Prokaryotes

1698 Words | 7 Pages

This bacterium can cause infection from consuming raw seafood, particularly oysters. Oysters are classified as a filter feeder and they filter small particles and organisms from the water that surrounds them and they typically filter roughly 20 to 100 liters of water a day. This method of feeding can lead to high concentrations of Vibrio and as a result, the oyster becomes colonized with the bacterium and thus serves as a vehicle for the transmission of vibrios bacteria. Vibrio vulnificus is the most common species responsible for the majority of mortalities of all the species of vibrio throughout the world and the incidence of illness from this bacterium is increasing worldwide. “The highest density of Vibrios vulnificus has been reported in oysters from the Gulf of Mexico, which has an overall higher mean water temperature compared with other coastal waters in the United States” (Daniels, 2011).

Read More

Informative Speech On Disease

1627 Words | 7 Pages

I. There are numerous amounts of diseases all over the world. In the present time, these diseases are cured or contained by vaccines. A couple centuries ago, doctor Edward Jenner developed the first vaccine in 1796. He discovered this vaccine by observing his ambiance. Jenner realized that milkmaids (tend to cattle) frequently contracted cowpox, but after they convalesced they were immune to the deadlier disease smallpox.

Read More

More about Listeriosis: Foodborne Infection

Related Topics

Open Document