Lactobacillus crispatus DSM 20584 = JCM 1185 = ATCC 33820 strain

Lactobacillus crispatus DSM 20584 (also known as JCM 1185 and ATCC 33820) is a Gram-positive, rod-shaped bacterium that typically forms chains and is nonsporulating. This strain is classified as a facultative anaerobe, indicating its ability to thrive in both aerobic and anaerobic environments. The optimal growth temperature for L. crispatus DSM 20584 is approximately 37.0°C, which aligns with the physiological temperature of many mammalian hosts. Lactobacillus crispatus is commonly found in host-associated habitats, notably within the human microbiome, particularly in the gastrointestinal tract and the female urogenital tract. Its presence in these niches is often associated with beneficial roles, such as the maintenance of microbial balance and the prevention of pathogenic infections. The strain's ability to grow in varying oxygen conditions may contribute to its adaptability within the host environment, allowing it to compete effectively with other microbial species. Recent studies suggest that specific strains of Lactobacillus, including L. crispatus, may play a crucial role in the modulation of local immune responses and the production of antimicrobial substances. These activities could enhance host health by promoting a balanced microflora and protecting against dysbiosis. Thus, L. crispatus DSM 20584 exemplifies the intricate relationships that beneficial microbes maintain with their hosts, highlighting the potential for Lactobacillus species in probiotic applications and health promotion.