Karen Pendergrass

Karen Pendergrass, Standards Team

About

Karen Pendergrass is a microbiome researcher specializing in microbiome-targeted interventions (MBTIs). She systematically analyzes scientific literature to identify microbial patterns, develop hypotheses, and validate interventions. As the founder of the Microbiome Signatures Database, she bridges microbiome research with clinical practice. In 2012, based on her own investigative research, she became the first documented case of FMT for Celiac Disease, four years before the first published case study.

Recent Posts

2025-03-18

Urinary lead concentration and composition of the adult gut microbiota in a cross-sectional population-based sample

What was studied? The study examined the association between urinary lead concentrations and changes in the gut microbiota composition in a population-based sample of adults. The research explored how varying levels of lead exposure could impact microbial diversity, richness, and specific bacterial taxa within the gut. Who was studied? The study population comprised adults […]

2025-03-18

Transvaginal Photobiomodulation for the Treatment of Chronic Pelvic Pain: A Pilot Study

The study in question focused on the use of transvaginal photobiomodulation (TV-PBM) as a treatment for chronic pelvic pain (CPP) in women. Here are the details based on the key aspects of the study: What was studied? The research investigated whether transvaginal photobiomodulation could effectively reduce chronic pelvic pain in women. This was a […]

2025-03-18

TMAO: how gut microbiota contributes to heart failure

This review underscores the critical role of gut microbiota and TMAO in heart failure pathophysiology and opens up new avenues for therapeutic interventions targeting the gut–TMAO–HF axis. The findings suggest promising directions for future research and clinical applications aimed at improving HF patient care and outcomes.

2025-03-18

The Vaginal Microbiome as a Tool to Predict rASRM Stage of Disease in Endometriosis: a Pilot Study

What was studied? The study focused on characterizing the gut and vaginal microbiome profiles of women with endometriosis compared to controls without the disease, exploring the potential of these profiles as less-invasive diagnostic tools for assessing the severity of endometriosis. Who was studied? Fifty-nine women participated in the study, including 35 with endometriosis and […]

2025-03-18

The Role of the Microbiome in Erectile Dysfunction: A review

This review discusses the increasingly recognized role of the human microbiome in health and disease, particularly focusing on its implications for erectile dysfunction (ED). The review highlights several key points: Evidence Linking Microbiome to ED Risk Factors: There is compelling evidence associating the gut microbiome with conditions known to contribute to ED, including diabetes, hypertension, […]

2025-03-18

The Revaluation of Plant-Derived Terpenes to Fight Antibiotic-Resistant Infections

What was studied? The study focused on terpenes derived from plants as potential antimicrobial agents, particularly their effectiveness against antibiotic-resistant infections. This included an exploration of the diverse mechanisms by which terpenes combat microbial resistance, their bioavailability, and the synergistic effects when combined with other antimicrobials. Who was studied? The research mainly involved microbial […]

2025-03-18

The Microbiome in Precision Medicine: The Way Forward

OverviewJoseph F. Petrosino’s editorial highlights the microbiome’s pivotal role in precision medicine, emphasizing its potential to advance personalized diagnostics and therapeutic strategies. The integration of microbiome signatures with other ‘omics’ data, such as genomics and metabolomics, offers a comprehensive understanding of disease mechanisms and tailored treatments. Petrosino draws parallels between microbiome signature research and genomics, […]

2025-03-18

The impact of photobiomodulation of major salivary glands on caries risk

What was studied? The study explored the impact of photobiomodulation therapy using different types of light on the major salivary glands and its subsequent effects on caries risk factors in individuals with high risk for dental caries. The therapy modalities tested included polarized polychromatic light, continuous LED light, and pulsed LED light, each aiming to […]

2025-03-18

The influence of nickel on intestinal microbiota disturbances

Excess nickel disrupts gut microbiota, promoting dysbiosis and contributing to conditions like obesity and systemic nickel allergy syndrome (SNAS). Probiotics and nickel-restricted diets show promise in mitigating these effects, underscoring the need for further research and clinical intervention.

2025-03-18

The gut microbiota–brain axis in neurological disorder

What was reviewed? The review paper provides a comprehensive overview of the gut microbiota-brain axis (GBA) and its role in various neurological disorders. Specifically, the paper examined the intricate bidirectional communication between the gut microbiota (GM) and the central nervous system (CNS), exploring how dysbiosis (an imbalance in the gut microbiota) contributes to the pathogenesis […]

2025-03-18

The gut microbiota and endometriosis: From pathogenesis to diagnosis and treatment

What was reviewed? The study reviewed the relationship between the gut microbiota and endometriosis, focusing on how the gut microbiota may influence the pathogenesis, diagnosis, and potential treatment of endometriosis through various mechanisms such as estrogen modulation, immune response, and inflammation. Who was reviewed? The review did not involve specific individuals as subjects of […]

2025-03-18

The Female Vaginal Microbiome in Health and Bacterial Vaginosis

This review in Frontiers in Cellular and Infection Microbiology examines the vaginal microbiome’s role in health and disease, particularly bacterial vaginosis (BV). It highlights the shift from a Lactobacillus-dominant microbiome in health to a dysbiotic state in BV, linked to increased risk of STIs, PID, and preterm birth. It also discusses current diagnostic and treatment limitations, emphasizing advanced molecular techniques and innovative therapies like probiotics and vaginal microbiota transplantation (VMT) for better management and improved reproductive health outcomes.

2025-03-18

The effect of hyperbaric oxygen therapy in the inflammatory response in a mouse model of endometriosis: An experimental study

This study highlights hyperbaric oxygen therapy’s (HBOT) role in reducing inflammation and NFκB expression in a mouse model of endometriosis. The findings suggest HBOT as a promising non-invasive treatment for managing endometriosis-associated inflammation, targeting hypoxia-induced molecular pathways and offering potential microbiome benefits through reduced inflammatory burden.