Is Shigella, the bacterium that causes bacillary dysentery, a Gram-negative rod?

Aug 02, 2023 Source: Cainiu Health
Dr. Zhou Chao
Introduction
Shigella, the bacterium that causes bacillary dysentery, is a Gram-negative rod. Bacillary dysentery is an intestinal disease caused by Shigella, and patients may experience symptoms such as abdominal pain, diarrhea, high fever, bloody stools, and mucus discharge. Gram-negative rods are a class of bacteria classified by the Gram staining method. These bacteria have relatively thin cell walls composed of complex structures.

Under normal circumstances, Shigella, the bacterium that causes bacillary dysentery, is a Gram-negative rod. The details are as follows:

Bacillary dysentery is an intestinal disease caused by Shigella infection, and patients may experience symptoms such as abdominal pain, diarrhea, high fever, bloody stools, and mucus discharge. Gram-negative rods are a category of bacteria classified by the Gram staining method. These bacteria have relatively thin cell walls composed of complex structures. The cell wall of Gram-negative rods consists of an outer bacterial membrane, an inner bacterial membrane, and a periplasmic space. During the Gram staining process, Gram-negative rods appear red rather than purple because their cell wall structure fails to retain the crystal violet dye used in Gram staining when decolorized with alcohol. Additionally, the outer membrane of Gram-negative rods contains lipopolysaccharides (LPS), which play a significant role in activating the host's immune system by triggering inflammatory responses. Shigella is a type of Gram-negative bacterium that appears red during Gram staining; therefore, Shigella is classified as a Gram-negative rod.

If infected with Shigella, patients should seek medical guidance for treatment using medications such as norfloxacin capsules or ceftriaxone sodium for injection, and maintain good dietary hygiene.