Gramnegatiivisia

Gramnegatiivisia is a Finnish term that translates to "gram-negative" in English. It refers to a group of bacteria that lack a cell wall component called peptidoglycan, which is a defining feature of gram-positive bacteria. Gram-negative bacteria have an outer membrane that contains lipopolysaccharides (LPS), which are not present in gram-positive bacteria. This outer membrane provides additional protection and contributes to the bacteria's resistance to certain antibiotics.

Gram-negative bacteria are typically more resistant to antibiotics than gram-positive bacteria due to their outer membrane. However, they are also more susceptible to certain antibiotics, such as beta-lactams, which can penetrate the outer membrane and inhibit the synthesis of peptidoglycan.

Gram-negative bacteria are found in a wide range of environments, including soil, water, and the human body. They can cause a variety of infections, including urinary tract infections, pneumonia, and sepsis. Some gram-negative bacteria are also used in biotechnology for the production of enzymes, antibiotics, and other useful compounds.

The classification of bacteria as gram-negative or gram-positive is based on their staining characteristics using the Gram stain, a simple and widely used diagnostic tool in microbiology. The term "gram-negative" was coined by the Danish bacteriologist Hans Christian Gram in 1884.