Psychrotroph

 

                                                     Temperature And Bacterial Growth 

 

 

 

Psychrotrophic Bacteria 

 

Able To Grow At Temperatures Less Than 5 Degrees

 

 

 

 

Example: Yersinia Enterocolitica 

 

Cold growth (unique property)

• Y. enterocolitica can grow at 0–4°C
• This is called:
  • Psychrotrophic growth
• Clinical relevance:
  • Can multiply in refrigerated food (milk, pork, blood products)
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Clostridium Septicum

 

                                                                 Bacteria That Swarm 

                                      Motile Microorganisms And Their Swarming Motility

 

 

 

 

Clostridia As Human Pathogens 

 

 

Clostridium Septicum

 

  

 

 

 

Clostridium Septicum And Colonic Adenocarcinoma

 

 

Clostridium septicum is known for:

• High mortality infections
• Strong association with:
  • Colon malignancy and Immunosuppression
• Clinical presentations:
  • Spontaneous gas gangrene
  • Sepsis

   

  Pathophysiology: Colon Malignancy

• Tumor → mucosal ulceration
• ↓ oxygen + ↑ acidity
• → ideal for Clostridium septicum spores
• → bacterial translocation → bacteremia / gas gangrene

 

 

 

 

 

 

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Accordion Sign

 

                                                               Accordion Sign  

 

 

 

The Concertina sign (also called the accordion sign) on X-ray is a radiological feature most classically associated with pseudomembranous colitis, especially due to Clostridioides difficile infection. 

 

Severe inflammation → marked mucosal edema

Thickened haustra → deep folds

Contrast (on CT more than plain X-ray) gets trapped between folds

Creates a striped / layered pattern

 

 

 

 

 

 

 

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Christmas Tree In Medicine

 

 

 

 

 

 

 

 

 

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Lissauers Tract

 

 The posterolateral tract of Lissauer (also called Lissauer’s tract or dorsolateral fasciculus)

The tract is named after the German neurologist and anatomist:

• Heinrich Lissauer

 

 

 

 

 

Lissauer’s tract (Pain And Temperature)

 

 

The tract carries small-diameter fibers (A-delta and C fibers)

  These fibers are involved in pain and temperature sensation

 After traveling in Lissauer’s tract, they synapse in the substantia gelatinosa

 Lissauer’s tract   To Spinothalamic Tract

 

 

 

 

 

 

 

 

 

 

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Memory: World Theater Day, 27.03.2026, Mumbai

                       

                                              National Center For Performing Arts, Mumbai

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