Megasphaera

Definition

Megasphaera is a genus of anaerobic, Gram-negative bacteria commonly found in the human urogenital tract. These bacteria are part of the normal microbiota but can become pathogenic under specific conditions.

5 Must Know Facts For Your Next Test

1. Megasphaera species are anaerobic, meaning they thrive in environments without oxygen.
2. These bacteria are Gram-negative and have a spherical shape.
3. Megasphaera is often found in the normal flora of the female vaginal microbiota.
4. An imbalance in Megasphaera populations can be associated with bacterial vaginosis.
5. Megasphaera elsdenii is one of the well-studied species within this genus.

Review Questions

Related terms

Anaerobic Bacteria: Bacteria that do not require oxygen for growth and may even die in its presence.

Gram-Negative Bacteria: Bacteria that have a thin peptidoglycan layer and an outer membrane, appearing pink after Gram staining.

Bacterial Vaginosis:

A condition characterized by an imbalance in the normal bacterial flora of the vagina, often including overgrowths of anaerobic bacteria.