Is gonorrhea Gram-negative?
Is gonorrhea Gram-negative?
a mucopurulent endocervical or urethral exudate on physical examination and. sexual exposure to a person infected with N. gonorrhoeae….Definitions: Identification of N. gonorrhoeae.
| Characteristic | Illustration |
|---|---|
| Gram stain Cell Morphology | Gram-negative diplococcus |
Can gonorrhea be Gram stained?
The presence of typical gram-negative intracellular diplococci and polymorphonuclear leukocytes on Gram stain from a specimen collected from a symptomatic male establishes a diagnosis of gonorrhea (sensitivity, >95%; specificity, >99%).
What is the Gram reaction of Neisseria?
Neisseria species are gram-negative, oxidase-positive bacteria. All are catalase positive, except some strains of N. bacilliformis and N. elongata.
What is the Gram stain of Neisseria?
Neisseria species are Gram-negative cocci, 0.6 to 1.0 μm in diameter. The organisms are usually seen in pairs with the adjacent sides flattened. Pili, hairlike filamentous appendages extend several micrometers from the cell surface and have a role in adherence.
What bacteria are gram-negative diplococci?
Examples of gram-negative diplococci are Neisseria spp. and Moraxella catarrhalis. Examples of gram-positive diplococci are Streptococcus pneumoniae and Enterococcus spp. Presumably, diplococcus has been implicated in encephalitis lethargica.
Is Escherichia Gram-positive or negative?
Examples of Gram-negative bacteria include Escherichia coli (E coli), Salmonella, Hemophilus influenzae, as well as many bacteria that cause urinary tract infections, pneumonia, or peritonitis. Gram stain can be done within a few hours.
What is the Gram reaction of Escherichia coli?
Metabolism and Physiology
| Characteristics | Reaction |
|---|---|
| Gram stain | Negative |
| Morphology | Straight rods |
| Motility | + (peritrichous) some non-motile |
| Aerobic and anaerobic growth | + |
What are the steps of Gram staining?
The performance of the Gram Stain on any sample requires four basic steps that include applying a primary stain (crystal violet) to a heat-fixed smear, followed by the addition of a mordant (Gram’s Iodine), rapid decolorization with alcohol, acetone, or a mixture of alcohol and acetone and lastly, counterstaining with …
Where Neisseria gonorrhoeae is found?
N. gonorrhoeae infects the mucous membranes of the reproductive tract, including the cervix, uterus, and fallopian tubes in women, and the urethra in women and men. N. gonorrhoeae can also infect the mucous membranes of the mouth, throat, eyes, and rectum.
