Vancomycin-resistant bacteria: VRSA and VRE

Vancomycin-resistant bacteria VRSA and VRE

Vancomycin-resistant bacteria: VRSA and VRE What is Vancomycin? Vancomycin is a glycopeptide antibiotic that is used to treat bacterial infections in the intestinal tract caused by Clostridium difficile and Staphylococcus infections and Enterococcus spp that cause inflammations in the large and small intestines. It can be administered in two ways, orally and intravenously. Oral administration … Read more Vancomycin-resistant bacteria: VRSA and VRE

Quorum Sensing in Bacteria

Quorum Sensing

Quorum Sensing in Bacteria Quorum sensing in bacteria Quorum. It is a Latin word that means a group of members carries out an activity legally. Quorum sensing is a mechanism of cell to cell signaling or density sensing in micro-organisms. Characteristics for quorum sensing For the bacteria to use quorum sensing constitutively, they must possess … Read more Quorum Sensing in Bacteria

Superbugs as Global Crisis

Superbugs as Global Crisis

Superbugs microbes that become resistant to the drugs that should destroy and kill them can be bacterial or fungal strains Image Source: Tincture and Business Insider Sources/ Factors of Resistance Natural selection Antibiotic resistance gene “flow” in nature Resistance genes in plasmids transferred from one bacteria to another Resistant microorganisms become predominant in the environment … Read more Superbugs as Global Crisis

Ideonella sakaiensis- Plastic eating bacteria

Ideonella sakaiensis- Plastic eating bacteria

Ideonella sakaiensis- Plastic eating bacteria Today the use of plastic and the pollutants has been the global threat. It has created an impact on the terrestrial as well as the marine ecosystem. Though the use of plastic has to comfort our living style, the lack of proper management has created pollution in nature. Recently, researchers … Read more Ideonella sakaiensis- Plastic eating bacteria

Isolation and Identification of Vibrio cholerae from faecal sample

Isolation and Identification of Vibrio cholerae from faecal sample

Isolation and Identification of Vibrio cholerae from faecal sample Introduction Vibrio is short, curved, Gram-negative rods measuring 2×0.5 µm and that is motile by its single polar flagellum. It is a facultative anaerobe that produces acid from carbohydrate fermentation. The growth of most species of Vibrio is facilitated by Na + ion but not for … Read more Isolation and Identification of Vibrio cholerae from faecal sample

Escherichia coli (E. coli) O157:H7

Escherichia coli O157H7

What is Escherichia coli O157:H7? Escherichia coli O157:H7  is a serotype of enterohemorrhagic E. coli which is Shiga toxin-producing. It produces Shiga toxin 1 (Stx1) and/or Shiga toxin 2 (Stx2) as the virulence factors that contribute to its pathogenicity by the formation of attachment and effacing (A/E) lesions on human intestinal epithelium. The minimum temperature … Read more Escherichia coli (E. coli) O157:H7

Carbapenem-Resistant Gram-Negative Bacteria

Carbapenemase Producing Enterobacteriaceae (CPE)

Carbapenem-Resistant Gram-Negative Bacteria The Carbapenem-Resistant Gram-Negative bacteria are a group of bacteria that have developed resistance against Carbapenem Antibiotics a last resort drug of administration for most gram-negative bacterial infections that have developed resistance against all possible antibiotics. These include the Carbapenemase Producing Organisms( CPOs)  and Carbapenem-Resistant Enterobacteriaceae (CREs). Carbapenem-Resistant Enterobacteriaceae (CREs) are a group … Read more Carbapenem-Resistant Gram-Negative Bacteria

Solute Transport Mechanisms in Bacteria

Solute Transport Mechanisms in Bacteria

Bacteria require several nutrients for their growth. Structural components such as cell wall and cell membrane restrict the entry of several molecules inside the cell. Therefore, the specific mechanism for nutrient uptake is highly important for the bacterial cell. Image Source: Dr. Kenneth Todar There are different transport mechanisms involved in the process which are … Read more Solute Transport Mechanisms in Bacteria

The Bacterial Cell Wall

The Bacterial Cell Wall

The Bacterial Cell Wall The cell wall is the outer most rigid structure which provides the structure to the bacterial cell. Moreover, it helps the cell by providing protection to the cell from osmotic lysis, toxic chemicals, and other pathogens. The chemical structure of the bacterial cell wall is similar in different bacteria. However, the … Read more The Bacterial Cell Wall

Staphylococcus aureus

Staphylococcus aureus- Properties, Epidemiology, Clinical Disease, Diagnosis, Treatment, Control, Prevention

Staphylococcus aureus Properties Ability to grow aerobically and anaerobically, over a wide range of temperatures, and in the presence of a high concentration of salt; the latter is important because these bacteria are a common cause of food poisoning. Polysaccharide capsule that protects the bacteria from phagocytosis. Cell surface proteins (protein A, clumping factor proteins) … Read more Staphylococcus aureus