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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

2024-04-16 08:19:50

Genetic and Epigenetic Theory of Disease

The Genetic and Epigenetic Theory of Disease posits that genetic mutations and epigenetic modifications, influenced by environment and lifestyle, impact gene function and disease development, providing insights into disease mechanisms and potential personalized treatments.

2024-04-16 06:38:22

Microbiome Theory of Health and Disease

The Microbiome Theory posits that gut balance promotes health, while imbalances (dysbiosis) cause disease, suggesting restoration as treatment.

2024-04-16 03:27:11

Müllerianosis theory

Müllerianosis theory posits that embryonic Müllerian duct remnants misplace and differentiate, forming endometrial-like tissues in non-uterine locations post-puberty, contributing to conditions like endometriosis.

2024-04-13 10:48:45

Lymphovascular Metastasis Theory

Lymphovascular Metastasis Theory posits that endometrial cells spread via blood and lymph systems, causing distant endometriosis. Evidence is promising but limited.

2024-04-13 10:07:27

Coelomic Metaplasia Theory

Coelomic Metaplasia Theory could help explain the cases of endometriosis in men or in women who are not yet menstruating.

2024-04-12 14:11:46

Environmental Theory of Endometriosis

The environmental theory of endometriosis suggests exposure to toxins like dioxins and CBs may contribute to its development by disrupting hormones, modulating the immune system, and promoting inflammation.

2024-04-11 17:10:22

Retrograde Menstruation Theory

Retrograde menstruation theory holds that during menstruation, some endometrial tissue reverses through the fallopian tubes into the pelvic cavity. It implants on pelvic organs, thickens, breaks down, and bleeds cyclically, causing inflammation, pain, and scar tissue, characteristic of endometriosis.

2024-04-08 14:15:14

Endometriomas

An endometrioma is a type of ovarian cyst filled with old blood, arising from endometrial tissue outside the uterus, typically causing pain and potentially impacting fertility.

2024-04-04 10:11:08

Metal Homeostasis

Transition metals like iron, zinc, copper, and manganese are crucial for the enzymatic machinery of organisms, but their imbalance can foster pathogenic environments within the gastrointestinal tract.

2024-04-04 09:41:00

The Chronic Inflammation Hypothesis

The Chronic Inflammation Hypothesis suggests that persistent inflammation contributes to the development and progression of various chronic diseases, including cancer, diabetes, and cardiovascular disorders.

2024-03-28 16:27:22

Nickel

Bacteria regulate transition metal levels through complex mechanisms to ensure survival and adaptability, influencing both their physiology and the development of antimicrobial strategies.

2024-03-28 13:29:02

Molecular Mimicry

Definition Molecular mimicry is a biological phenomenon where the molecules (usually proteins or peptides) of one organism mimic the molecular structures of another organism. This mimicry can occur between molecules of different viruses, between viruses and the host, or between different cellular components within an organism.Fundamental Molecules: At the most basic level, molecular mimicry involves […]

2024-03-21 12:11:30

Virulence Factors

Virulence factors are molecules produced by pathogens that contribute to their ability to infect, colonize, and cause disease in host organisms by evading the immune system or damaging host tissues.

2024-03-20 18:03:13

Dimethylglyoxime (DMG)

Dimethylglyoxime (MG) is a chemical compound known for its ability to selectively chelate Nickel ions (Ni^2+), forming a bright red precipitate. This property has made MG a useful reagent in analytical chemistry for detecting and quantifying nickel. In fighting pathogens with nickel-dependent enzymes, such as those possessing urease or hydrogenase essential for their survival and […]

2024-03-15 13:15:48

Drug Repurposing 

Drug repurposing involves identifying new therapeutic uses for existing drugs, offering a cost-effective and time-efficient pathway to enhance treatment options and address unmet medical needs.

2024-03-09 10:38:47

Low‑Nickel Diet (LNiD)

A low-nickel diet (NiD) is a therapeutic dietary intervention that eliminates high-nickel foods, primarily plant-based sources such as legumes, nuts, whole grains, and cocoa, to reduce systemic nickel exposure. It is clinically validated for managing systemic nickel allergy syndrome (NAS) and nickel-induced eczema. Its relevance is well-established in microbiome modulation, with studies demonstrating clinical benefits in conditions such as endometriosis, fibromyalgia, irritable bowel syndrome, and ERD.

2024-02-22 20:17:17

Microbiome Signatures Definition: A Conceptual Advancement for Translational Microbiome Science

Microbiome signatures are reproducible ecological and functional patterns—encompassing traits, interactions, and metabolic functions—that reflect microbial adaptation to specific host or environmental states. Beyond taxonomy, they capture conserved features like metal metabolism or immune modulation, enabling systems-level diagnosis and intervention in health and disease.

2024-02-20 11:34:03

Your Unique Microbiome Signature

Your microbiome is the collection of microorganisms (such as bacteria, fungi, and viruses) that live on and in your body. It is unique to you and can be influenced by various factors, including your diet, environment, and genetics. Determining your own unique Microbiome Signature can be performed by undergoing microbiome testing. This can be done […]

2024-01-29 19:21:34

Photobiomodulation

Photobiomodulation (BM), formerly known as Level Laser Therapy (LLT), is a non-invasive therapeutic technique involving the application of light, typically in the red to near-infrared (IR) spectrum, to promote tissue repair, reduce inflammation and pain, and provide various other therapeutic effects. This technique has gained significant attention in clinical and research settings due to its […]

2024-01-01 00:00:00

Oral, Vaginal, and Stool Microbial Signatures in Patients With Endometriosis as Potential Diagnostic Non-Invasive Biomarkers: A Prospective Cohort Study

This study explores oral, vaginal, and stool microbial signatures in patients with endometriosis, highlighting their potential as non-invasive diagnostic biomarkers. Findings suggest distinct microbial shifts in these sites, offering a promising avenue for early detection and targeted intervention in endometriosis management.

2023-01-01 00:00:00

Association of aberrant brain network dynamics with gut microbial composition uncovers disrupted brain-gut-microbiome interactions in irritable bowel syndrome: Preliminary findings

This study identifies disrupted brain-gut-microbiome interactions in BS patients, revealing altered brain network dynamics and microbial shifts linked to symptom severity and cognitive dysfunction. These findings highlight the potential for targeted therapies addressing both brain connectivity and gut microbiota to improve BS management.

2021-01-01 00:00:00

Associations Between Endometriosis and Gut Microbiota

This study examines the association between endometriosis and gut microbiota, highlighting significant differences in microbial diversity and composition. Women with endometriosis showed altered gut microbial profiles compared to healthy controls, with specific bacterial shifts linked to gastrointestinal symptoms and hormonal therapy. These findings suggest microbiota-targeted therapies may benefit endometriosis management.

2020-01-01 00:00:00

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

This study identifies the vaginal microbiome as a predictor of endometriosis severity, highlighting microbial shifts that correlate with rASRM staging. Anaerococcus emerged as a key biomarker for advanced disease stages, while ST V dominance during menstruation suggests inflammatory shifts. Findings support the potential of non-invasive microbiome-based diagnosis for endometriosis.