ETEC is a major cause of traveler’s diarrhea in adults in industrialized countries and a leading cause of infant diarrhea in developing countries. ETEC is estimated to cause 200 million episodes of diarrhea and approximately 380,000 deaths in children in the developing world and travelers to those areas. In the US, ETEC is estimated to cause approximately 17,800 foodborne illnesses annually. Enterotoxins produced by ETEC strains include heat-labile LT toxin and heat-stable ST toxin. ETEC illnesses are usually associated with acute watery diarrhea and sometimes nausea, headache, vomiting, or fever.

Eosinophil Activation Protein (EDN/EPX) is a protein released by activated eosinophils which has strong cytotoxic characteristics. 

Cytotoxic means that a substance or process can damage cells or cause them to die. "Cyto" means cell and "toxic" means poison.

The protein plays a significant role in a variety of inflammatory and mast-cell mediated pathologies in addition to fighting pathogens, particularly viral infections.

Eosinophil Cationic Protein (ECP) is a ribonuclease that is part of the RNase A superfamily, primarily associated with the body's immune response mechanisms, especially in the context of allergic reactions and parasitic infections.

ECP is released by eosinophils, a type of white blood cell that plays a crucial role in the body's immune defense system. Eosinophils are known to be involved in the modulation of immune responses and the mediation of inflammatory processes, particularly in allergic conditions such as asthma, rhinitis, and eczema, as well as in responses to parasitic infections.

The presence and concentration of ECP in bodily fluids are used as a biomarker to indicate the activation of eosinophils and the intensity of the inflammatory response. High levels of ECP are often associated with active disease states in conditions characterized by eosinophilic inflammation. For instance, in patients with asthma, elevated ECP levels can reflect the severity of airway inflammation and have been linked to disease exacerbation and decreased lung function. Similarly, in allergic rhinitis and atopic dermatitis, increased ECP levels correlate with symptom severity and the extent of eosinophilic involvement.

Eosinophil Protein X is a water-soluble protein that is found in eosinophils. Fecal Eosinophil Protein X levels are abnormally increased in people with intestinal inflammation where high concentrations of eosinophils may be found.

What Are Eosinophils?

Eosinophils are a type of white blood cell that helps defend against parasites, allergens, bacteria, and viruses. They make up less than 5% of all white blood cells but play a key role in immune responses.

An elevated eosinophil count may indicate infection or an allergic reaction, while very high levels could signal an underlying health condition.

What Do Eosinophils Defend Against?

• Fungal, bacterial, and viral infections
• Parasites, such as worms

How Do Eosinophils Work?

Eosinophils destroy invading pathogens and contribute to inflammation, particularly in allergies, asthma, and eczema. While inflammation helps control infections, it can also damage surrounding tissues, making eosinophils both protective and a factor in allergic diseases.

What Are Eosinophils?

Eosinophils are a type of white blood cell (leukocyte) that play a key role in protecting your body from infections, allergens, and foreign invaders. These cells are part of your immune system and are responsible for defending against parasites, bacteria, fungi, and viruses. Eosinophils account for less than 5% of your total white blood cell count, but their presence is crucial in immune responses.

An increased number of eosinophils can indicate that your body is fighting an infection, managing an allergic reaction, or dealing with a more serious health condition if levels are significantly elevated.

The Role of Eosinophils in the Immune System

Eosinophils are active participants in your immune system and have several critical functions, including:

• Defending Against Parasites: Eosinophils help eliminate parasites like worms, including hookworms and roundworms.
• Fighting Infections: They play a role in combating bacterial, fungal, and viral infections.
• Responding to Allergies: Eosinophils are heavily involved in allergic responses, contributing to inflammation associated with conditions like asthma, eczema, and hay fever.

Eosinophils and Inflammation

Eosinophils are central to your body’s inflammatory response, particularly in cases of allergies. When your immune system identifies a threat, such as a parasite or allergen, eosinophils release chemicals to attack the invader. This process triggers inflammation, which helps isolate and control the immune response at the site of infection or irritation.

However, while inflammation is a protective mechanism, it can also lead to tissue damage in the surrounding area. Chronic inflammation, such as that seen in allergies, asthma, or eczema, can result in discomfort and other long-term health effects.

Key Facts About Eosinophils

• Small in Number: Eosinophils make up less than 5% of your white blood cells but have a significant impact on immune health.
• Elevated Levels: Higher-than-normal eosinophil counts may indicate infections, allergic reactions, or more serious conditions like autoimmune diseases or certain cancers.
• Dual Role: Eosinophils not only defend against pathogens but also contribute to inflammation, which can be both beneficial and harmful depending on the context.

Eosinophils are a critical component of your immune system, playing a dual role in protecting your body and managing inflammatory responses. While they are essential for fighting infections and parasites, they also play a major role in allergic reactions, which can lead to chronic inflammation if left unmanaged. Monitoring eosinophil levels through blood tests can provide insights into your immune health and help diagnose underlying conditions.

The percentage of eosinophils in synovial fluid analysis is a valuable diagnostic marker that can indicate various joint conditions, particularly eosinophilic synovitis. It serves as a crucial piece of information for healthcare providers to determine the appropriate treatment and management strategies.

Eicosapentaenoic Acid (EPA) is a Polyunsaturated Omega-3 Fatty Acid and is involved in the regulation of inflammatory processes and prevention of blood clots.

Omega-3 fatty acids (omega-3s) have a carbon–carbon double bond located three carbons from the methyl end of the chain. Omega-3s, sometimes referred to as “n-3s,” are present in certain foods such as flaxseed and fish, as well as dietary supplements such as fish oil. Several different omega-3s exist, but the majority of scientific research focuses on three: alpha-linolenic acid (ALA), eicosapentaenoic acid (EPA), and docosahexaenoic acid (DHA). ALA contains 18 carbon atoms, whereas EPA and DHA are considered “long-chain” (LC) omega-3s because EPA contains 20 carbons and DHA contains 22.

Eicosapentaenoic Acid (EPA) is a Polyunsaturated Omega-3 Fatty Acid and is involved in the regulation of inflammatory processes and prevention of blood clots.

Omega-3 fatty acids (omega-3s) have a carbon–carbon double bond located three carbons from the methyl end of the chain. Omega-3s, sometimes referred to as “n-3s,” are present in certain foods such as flaxseed and fish, as well as dietary supplements such as fish oil. Several different omega-3s exist, but the majority of scientific research focuses on three: alpha-linolenic acid (ALA), eicosapentaenoic acid (EPA), and docosahexaenoic acid (DHA). ALA contains 18 carbon atoms, whereas EPA and DHA are considered “long-chain” (LC) omega-3s because EPA contains 20 carbons and DHA contains 22.

→ Eicosapentanoic acid (EPA) is an omega-3 fatty acid that participates in the health of cellular membranes, mediates lipid actions, and reduces inflammatory responses in the body.

→ EPA and DHA influence the types of inflammatory response mediators made in favor of anti-inflammatory eicosanoids such as leukotrienes, prostaglandins, and thromboxanes. EPA and DHA are also noted for moderate to strong anti-depressant effects.

→ Specific to EPA, it has been shown to suppress signaling of TNF-α in adipocytes.

→ EPA also increases cerebral oxygenation.

→ EPA appears to have some beneficial influence on regulating levels of leptin and increasing adiponectin.

→ EPA may enhance adaptive immunity by stimulating B cell responsiveness.

Three of the most important omega-3 fatty acids are eicosapentaenoic acid (EPA), docosapentaenoic acid (DPA), and docosahexaenoic acid (DHA). Omega-3 fatty acids are primarily obtained from food sources, such as oily fish. They have antioxidant, anti-inflammatory, and antithrombotic effects, and can help to reduce triglyceride levels. 

The EPA:AA ratio is a valuable predictor of cardiovascular risk.

The EPA:AA ratio may be a marker of chronic inflammation, with a lower ratio corresponding to higher levels of inflammation. It is now well established that inflammation plays an important role in cardiovascular disease.

The EPA (Eicosapentaenoic Acid) to Arachidonic Acid ratio is a measure often used to gauge the balance of anti-inflammatory and pro-inflammatory fatty acids in the body.

Eicosapentaenoic Acid (EPA) is an omega-3 fatty acid primarily found in fatty fish and fish oil supplements, known for its anti-inflammatory properties.

In contrast, Arachidonic Acid is an omega-6 fatty acid found in animal products and some vegetable oils, which can give rise to pro-inflammatory eicosanoids when metabolized.

The fatty acid profile shows the balance of fats and their metabolites in plasma. Your overall balance of omega-3 and omega-6 fats is represented by the ratios of AA/EPA(arachidonic acid/eicosapentaenoic acid) and EPA/DGLA.

The fatty acid profile shows the balance of fats and their metabolites in plasma. Your overall balance of omega-3 and omega-6 fats is represented by the ratios of AA/EPA(arachidonic acid/eicosapentaenoic acid) and EPA/DGLA.

Epi-Testosterone is one of several naturally-occurring testosterone compounds in the body that act as steroids.

Epitestosterone, or isotestosterone is an endogenous steroid and an epimer of the androgen sex hormone testosterone. It is a weak competitive antagonist of the androgen receptor (AR). Structurally, epitestosterone differs from testosterone only in the configuration at the hydroxy-bearing carbon, C17. Epitestosterone is believed to form in a similar way to testosterone; studies found that around 50% of epitestosterone production in human males can be ascribed to the testis, although the exact pathway of its formation is still the subject of research. It has been shown to accumulate in mammary cyst fluid and in the prostate. Epitestosterone levels are typically highest in young males; however, by adulthood, most healthy males exhibit a testosterone to epitestosterone ratio (T/E ratio) of about 1:1

Epi-Testosterone is one of several naturally-occurring testosterone compounds in the body that act as steroids.