Listeria With Tumbling Motility (by Pathmass)

Listeria with tumbling motility (by Pathmass)

Listeria monocytogenes

Gram+, aerobic, motile rod, facultative intracellular, beta hemolytic on blood agar

Tumbling motility in broth (as seen in video)

Jet motility in cells by actin filament formation

Listeriolysin O (Beta hemolysin): pathogenic factor, facilitates it scape from phagosome before phagolysosome formation and “jets” into another cell.

Diseases:

Lysteriosis: asymptomatic or diarrhea.

Lysteriosis in pregnant women septicimia, crosses placenta.

Granulomatosis infantisepticum: neonatal disease, in utero transmission, sepsis, diseminated granulomas and high mortality.

Neonatal sepsis and meningitis (3° most common cause) 2-3 weeks after birth (fecal exposure)

Septicemia and meningitis in immunocompromised pts

Meningitis in renal transplant pts, cancer pts

More Posts from T-b-a-blr-blog and Others

t-b-a-blr-blog

6 years ago

Horizontal gene transfer

16 notes View Post

t-b-a-blr-blog

6 years ago

Ketone bodies are produced in the liver and can be used as an energy source in the mitochondrial of peripheral tissues. Important fact: RBCs can not use ketones because they lack mitochondria.

The liver is unable to peform Ketolysis because it lacks Thiophorase (Succinyl-CoA Acetoacetate Transferase), and is hence unable to activate its own ketones.

33 notes View Post

t-b-a-blr-blog

6 years ago

nasty moodboard

335 notes View Post

t-b-a-blr-blog

6 years ago

Side effects of drugs commonly given to the elderly

For sleep aid do not give barbituates or diphenhydramine (1st gen antihistamine). Instead, give Ramelteon.

20 notes View Post

t-b-a-blr-blog

6 years ago

171 notes View Post

t-b-a-blr-blog

6 years ago

13 notes View Post

t-b-a-blr-blog

6 years ago

That cell specialization…it’s pretty important.

(From our video)

842 notes View Post

t-b-a-blr-blog

6 years ago

Microbiology Mnemonics

140 notes View Post

t-b-a-blr-blog

6 years ago

If you cannot grasp what I have just explained, you should just leave and study economics!

Microbiology professor, first lecture (via scienceprofessorquotes)

267 notes View Post

t-b-a-blr-blog

6 years ago

Stuff in my Office

From 1930. This well-dressed young scientist is experimenting with The Air. Exactly what he is doing is a mystery.

July 25 …. I finally get it! He’s holding an eye dropper with a bulb on the end. I thought it was a pair of chopsticks! He’s picking up pieces of paper using the vacuum from squeezing the bulb! Still very formal, though …

447 notes View Post