Infective Stage of E. gingivalis

E. gingivalis is a gram-negative anaerobic bacterium that can cause periodontal disease. The infective stage of E. gingivalis is the stage at which the bacterium can cause infection in the host. The infective stage of E. gingivalis is as follows:

Trophozoite

The trophozoite is the active, motile, and feeding stage of E. gingivalis. It is the stage at which the bacterium can invade the host's tissues and cause infection. The trophozoite is characterized by several features:

- It is a gram-negative bacterium that has a characteristic rod shape.
- It is anaerobic, meaning that it does not require oxygen to grow and survive.
- It has several virulence factors that allow it to invade and survive in the host's tissues, including fimbriae, gingipains, and lipopolysaccharides.

The trophozoite stage of E. gingivalis is the stage that is most commonly associated with periodontal disease. During this stage, the bacterium can invade the host's tissues and cause inflammation, leading to the breakdown of the periodontal ligament and the loss of bone around the teeth.

Conclusion

In conclusion, the infective stage of E. gingivalis is the trophozoite stage. This is the stage at which the bacterium can invade the host's tissues and cause infection. Understanding the infective stage of E. gingivalis is important for developing strategies to prevent and treat periodontal disease.