Articles related to "Gram Negative"



Gram Negative Bacterial Pneumonia
Pneumonia is an infection of the lungs typically caused by a bacteria, virus, or inhaled substances. Here is a look at some gram-negative bacterial causes.
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Gram Negative ( Gram- ) Bacteria
Most bacteria have one of these two types of cell walls. The differential Gram stain uses two dyes to distinguish between bacteria based on cell wall structure.
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Gram Negative Bacterial Stain
Gram- bacteria stain pink due to the location of cell wall peptidoglycan and an external LPS membrane. Here's how Gram staining identifies Gram negative organisms.
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Septic Shock Gene Identified
Mutations in the gene that detects gram negative bacterial infections early could make you more likely to develop septic shock.
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A Living Antibiotic, Anyone?
Bdellovibrio bacteriovorus feasts on disease causing gram negative bacteria, making them potentially useful as 'living antibiotics'.
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Gram Positive Bacterial Pneumonia
Pneumonia is an inflammation or infection of the lungs most commonly caused by a bacteria or virus, but can also be caused by inhaling foreign substances.
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Bacteria Gram Stain Reaction
Gram staining involves the application of a series of dyes that leaves some bacteria purple (Gram +) and others pink (Gram -). Here's how the Gram stain works.
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Bacterial Cell Wall Structure
The amount and location of peptidoglycan in the prokaryotic cell wall is what determines whether a bacterium is Gram-positive or Gram-negative.
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Gram Positive ( Gram+ ) Bacteria
Most bacteria have one of these two types of cell walls. The differential Gram stain uses two dyes to distinguish between bacteria based on cell wall structure.
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MacConkey's Agar (MAC) Bacterial Growth Medium
MacConkeys Agar is a special bacterial growth medium that is selective for Gram- bacteria and can differentiate those bacteria that are able to ferment lactose.
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MOA of Aminoglycoside Antibiotics
Antibiotics are chemotherapeutic agents used to inhibit or kill bacteria (prokaryotic organisms). How do aminoglycosides destroy bacteria without hurting our cells?
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MOA of Penicillin Antibiotics
Antibiotics are chemotherapeutic agents used to inhibit or kill bacteria (prokaryotic organisms). How does penicillin destroy bacteria without hurting our cells?
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What Are Bacterial Fimbriae?
Most Gram-negative bacteria have hair-like projections external to their cell's wall. One type, fimbriae, allows bacteria to stick together and attach to host cells.
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MOA of Quinolone Antibiotics
Antibiotics are chemotherapeutic agents used to inhibit or kill bacteria (prokaryotic organisms). How do quinolones destroy bacteria without hurting our cells?
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MOA of Tetracycline Antibiotics
Antibiotics are chemotherapeutic agents used to inhibit or kill bacteria (prokaryotic organisms). How do tetracyclines destroy bacteria without hurting our cells?
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weapons of brutal little beasties
How do the tiny bacteria cause so much damage to us in terms of pain, misery, energy, money, emotional strain etc.?
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What is Salmonella?
Seemingly with increased frequency, news reports link the sickening of numerous people with the identification of food tainted by the presence of the bacterium Salmonella
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API-20E Bacterial Identification Test Strip
Differential stains and media can provide preliminary identification of microbes, but to identify Gram- bacteria to the species, a more sophisticated test is required.
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Causes and Types of Pneumonia
Pneumonia is an inflammation of the lungs caused by bacteria, virus, fungus or the inhalation of foreign substances. Here are some quick links to articles on pneumonia.
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Differential Bacterial Growth Media
In microbiology, there are many different techniques used to identify microbes. Differential media typically provide general information regarding identity.
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Fimbriae and Bacterial Virulence
Fimbriae are external structures of Gram- cells which enable bacteria to adhere to surfaces and, as virulence factors, mediate infection of host cells.
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Gram Positive Bacterial Stain
Gram + bacteria stain purple due to the chemistry and structure of their peptidoglycan cell wall. Here's how Gram staining identifies Gram-positive organisms.
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How Do Antibiotics Work to Kill Bacteria?
Antibiotics are drugs used to fight bacterial infections. How do these medications work to kill bacteria without harming human cells?
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Selective Bacterial Growth Media
Selective media inhibit the growth of certain microbes, providing general information regarding the bacteria that are able to grow on these specialized types of agar.
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Silent Sexually Transmitted Infections (STIs)
Medications and vaccines are available to treat and prevent some STIs. Still these diseases are on the rise. Many cause no symptoms; spread by those unaware of infection.
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Tests for Identification of Bacteria
Gram, Acid Fast and Endospore stains; MacConkey's, Mannitol Salt, and Blood Agar media as well as the API-20 test strip all provide information to identify microbes.
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Bacterial vaginosis
Bacterial vaginosis is a condition in which the normal flora of the vagina has been disrupted shifting from the predominance of Lactobacillus species to an overgrowth of
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Comparison of Bacterial and Viral Meningitis
Meningitis is an inflammation of the meninges that line and protect the brain and spinal cord. It occurs when bacteria or viruses breech the blood-brain barrier.
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External Structures of Prokaryotic Cells
Prokaryotic cells can have a variety of surface appendages - flagellum, fimbria or pilus - that enable them to move, adhere to surfaces and even infect host cells.
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How to Interpret Beta Hemolysis on Blood Agar
What does it mean if a BAP throat culture shows B-hemolysis? Do you have strep throat? Maybe. Here is some additional information on B-hemolytic bacteria.
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MOA of Cephalosporin Antibiotics
Antibiotics are chemotherapeutic agents used to inhibit or kill bacteria (prokaryotic organisms). How do they destroy bacteria without hurting our cells?
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Streptomycin –
Antibiotics are the metabolic by-products of microorganisms that in very small amounts are detrimental or inhibitory to other microorganisms.
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Prokaryotic Microbe Cell Biology
Prokaryotes are evolutionarily ancient, for billions of years the only form of life. Here's a summary of the basic "parts & pieces" of these primitive cells.
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Acinetobacter – Emerging Bacterial Pathogen
The bacterium Acinetobacter baumannii was often ignored by doctors but now is considered a potentially lethal pathogen in hospitals, due to antibiotic resistant strains.
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Sole Survivors - Germs And Shoes
Researchers, in conjunction with a major shoe corporation, recently identified a myriad of dangerous and health-threatening germs carried unknowingly on your shoe.
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Urinary Tract Infections
Urinary tract infections can be mild or serious with symptoms that depend on the portion of the urinary tract involved.
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Ehrlichia - Dog Tick Disease
Erhlichia is a disease spread by ticks. There are different types of Ehrlichia and the different types are spread by different types of ticks.
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Elkhorn Corals Killed by Bacterium!
The foundation of a coral reef are the hard corals like the elkhorn coral. A bacterial disease is killing large numbers of these corals and could cause enormous damage to the coral reefs in the Carribean Sea.
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Fungal Pneumonia - Endemic
Pneumonia is an infection of the lungs most commonly caused by a bacterium or virus, but can also result from inhalation of endemic fungi. Here are the most common.
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Genome, Proteome and Metabolome
Living things can be studied and classified based on their genome as well as the protein products derived from those genetic instructions.
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Helicobacter Pylori
Helicobacter pylori causes peptic ulcer disease: gastric and duodenal ulcers.
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MOA of Sulfonamide Antibiotics
Antibiotics are chemotherapeutic agents used to inhibit or kill bacteria (prokaryotic organisms). How do sulfonamides impact bacteria without hurting our cells?
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Morgellons-Unexplained Dermopathy
The Center For Disease Control in Atlanta has partnered with Kaiser Permanente in California to research and begin to unravel the mystery of Morgellons Disease.
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Peptic Ulcer Disease
Gastric and duodenal ulcers were long thought to be the cause of stress and spicy foods until Helicobacter pylori was discovered.
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Pneumonia Caused by Virus
Pneumonia is an inflammation of the lungs that can result from infection with a bacterial, fungal or viral pathogen.
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Primary Atypical Pneumonia
Pneumonia is an inflammation of the lungs usually caused by a bacteria or virus. Respiratory infection from bacteria-like Mycoplasma causes atypically mild symptoms.
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Salmonella Outbreak
A current outbreak linked to peanut butter in Minnesota is affecting more than 430 people in 43 states with 3-5 deaths, but what is this evil thing called salmonella?
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Structural Differences of Bacteria and Viruses
Bacteria and viruses are both tiny infectious agents with the ability to cause disease. So it is not surprising that these microbes are sometimes mistaken as the same.
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What Causes Stomach Ulcers?
Think that stress and spicy food cause ulcers? Think again! Although these factors can make an ulcer worse, peptic ulcers are actually caused by the bacterium H. pylori.
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Chlamydiae Bacteria
The Chlamydia genus of bacteria consists of four unique species that cause a variety of disease including genital tract infections and respiratory tract infections.
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