Casein, Lactococcus Lactis Cultured

For diagnostic purposes, the dosage of Casein, Lactococcus Lactis Cultured is not measured in milligrams but in concentration and volume.

• Skin Prick Test (SPT): Typically, one drop of the extract (usually at a concentration of 1:10 or 1:20 w/v) is applied to the skin, followed by a prick with a sterile lancet.
• Intradermal Testing: If required (though rare for food allergens), a much higher dilution (e.g., 1:1000 or 1:10,000) is injected in a volume of 0.02 mL to 0.05 mL.
• Oral Immunotherapy (OIT): Dosing is highly individualized. It begins with a 'rush' phase or 'initial escalation' where doses might start as low as 0.01 mg of protein and double every 30 minutes under strict observation, followed by a 'build-up' phase where the dose is increased weekly at home.

Milk allergy is most prevalent in the pediatric population.

• Skin Prick Test: The procedure for children is identical to adults, although the number of tests performed at one time may be limited to minimize discomfort. The concentration used is generally the same.
• Oral Immunotherapy: Pediatric dosing is the standard for OIT. Doses are meticulously calculated based on the child's threshold of reaction, often starting with micrograms of protein.
• Safety Note: Children with a history of asthma are at a higher risk for severe reactions during testing and must be stable before the extract is used.

Renal Impairment

No specific dosage adjustments are required for renal impairment, as the proteins are not cleared by the kidneys in a manner that would lead to toxicity. However, patients with end-stage renal disease may have altered skin reactivity (anergy), which can lead to false-negative skin test results.

Hepatic Impairment

No dosage adjustments are necessary for patients with liver disease. The immunological activity of the extract is independent of hepatic metabolism.

Elderly Patients

Geriatric patients may exhibit reduced skin reactivity due to the natural thinning of the dermis and decreased mast cell density. While no specific dose adjustment is needed, the interpretation of the skin test must be done with caution, and a positive histamine control is essential.

This substance is never self-administered by the patient for diagnostic purposes.

1. 1Preparation: The skin (usually the forearm or back) is cleaned with alcohol.
2. 2Application: Drops of the extract are placed on the skin at least 2 cm apart.
3. 3Pricking: A sharp device is used to pass through the drop into the upper layers of the skin. A new lancet must be used for each allergen to prevent cross-contamination.
4. 4Observation: The patient must remain in the office for at least 20 to 30 minutes. The results are read by measuring the diameter of the wheal and flare.
5. 5Oral Use: If used for OIT, the extract is typically mixed with a 'vehicle' food (like applesauce or juice) that the patient is not allergic to. It should be taken at the same time every day, but never on an empty stomach and never before or after vigorous exercise, hot showers, or during illness, as these factors can lower the 'reaction threshold.'

In the context of Oral Immunotherapy (OIT):

• One Missed Dose: Usually, the patient is advised to take the next scheduled dose as normal. Do not double the dose.
• Two or More Missed Doses: Contact the allergist immediately. A 'step-down' in dosage may be required to safely resume treatment, as the immune system can quickly lose its desensitized state.

An 'overdose' in the context of an allergenic extract is defined as the administration of an amount that triggers a systemic allergic reaction (anaphylaxis).

• Signs of Overdose: Hives (urticaria), swelling of the throat (angioedema), wheezing, shortness of breath, rapid heart rate, or a drop in blood pressure (fainting).
• Emergency Measures: Immediate administration of epinephrine (EpiPen) is the first-line treatment. The patient should be placed in the supine position (lying on the back) with legs elevated, and emergency medical services (911) must be called.

> Important: Follow your healthcare provider's dosing instructions exactly. Do not attempt to use these extracts or perform 'home testing' under any circumstances.

Most patients undergoing testing or treatment with Casein, Lactococcus Lactis Cultured will experience some form of localized reaction.

• Localized Pruritus (Itching): This is the most common side effect at the site of the skin test. It typically begins within minutes and subsides within an hour.
• Wheal and Flare: A raised, red bump at the test site is the expected result of a positive test. It may feel warm or slightly tender.
• Oral Itching (Oropharyngeal Pruritus): For those taking the extract orally (OIT), an itchy mouth or throat is extremely common, especially during the initial stages of treatment.
• Gastrointestinal Discomfort: Mild stomach pain or nausea often occurs following oral ingestion as the proteins interact with the gut's immune system.

• Delayed Local Reactions: Some patients may experience swelling and redness at the test site that appears 6 to 12 hours after the procedure. This is known as a 'late-phase reaction.'
• Generalized Hives (Urticaria): Hives appearing on parts of the body away from the test site indicate a mild systemic reaction.
• Abdominal Cramping: More significant GI distress, sometimes accompanied by vomiting, can occur in sensitive individuals during OIT.

• Eosinophilic Esophagitis (EoE): This is a chronic immune system disease where eosinophils (a type of white blood cell) build up in the lining of the esophagus. This has been reported as a rare complication of long-term oral exposure to milk allergens during immunotherapy.
• Persistent Lymphadenopathy: Swelling of the lymph nodes near the site of administration.

> Warning: Stop using Casein, Lactococcus Lactis Cultured (if on OIT) and call your doctor or emergency services immediately if you experience any of the following:

• Anaphylaxis: A severe, life-threatening systemic allergic reaction. Symptoms include a feeling of 'impending doom,' swelling of the tongue, difficulty swallowing, and a sudden drop in blood pressure.
• Bronchospasm: Severe wheezing or chest tightness that does not respond to a rescue inhaler.
• Laryngeal Edema: Swelling in the throat that makes it difficult to breathe or speak.
• Hypotension (Shock): Dizziness, fainting, or turning pale and blue (cyanosis).

When used for diagnostic purposes, there are generally no long-term side effects. However, when used as part of a long-term immunotherapy program:

• Immunological Shift: The primary long-term effect is a desired change in the immune system's response to milk.
• Chronic GI Issues: In rare cases, patients may develop chronic low-grade inflammation of the digestive tract if the dose is consistently higher than their tolerance level.

While non-standardized extracts may not always carry a specific 'Black Box' on the outer carton in the same way as standardized extracts (like Grass Pollen tablets), the FDA-approved class labeling for allergenic extracts includes a severe warning regarding Anaphylaxis.

Summary of Warning: Casein, Lactococcus Lactis Cultured can cause severe life-threatening systemic reactions, including anaphylaxis. Patients must be observed for at least 30 minutes following administration. It should not be administered to patients with unstable or severe asthma. Healthcare providers must be prepared to treat anaphylaxis with epinephrine immediately.

Report any unusual symptoms or side effects to your healthcare provider. You may also report side effects to the FDA at 1-800-FDA-1088.

Casein, Lactococcus Lactis Cultured is a potent biological agent. Its use is restricted to clinical environments where medical professionals can monitor for and treat systemic allergic reactions. It is not for self-administration unless specifically prescribed as part of an oral immunotherapy maintenance program, and even then, only after extensive in-office training.

No FDA black box warnings for Casein, Lactococcus Lactis Cultured. However, the class-wide warning for allergenic extracts remains: This product can cause anaphylaxis, which may be fatal. It must be administered by physicians who are exceptionally experienced in the treatment of allergic diseases and who have the equipment and medications (including epinephrine) necessary to manage a life-threatening reaction.

• Allergic Reactions / Anaphylaxis Risk: The primary risk is an over-response of the immune system. Patients with a history of severe reactions to very small amounts of dairy are at the highest risk.
• Asthma Status: Patients with poorly controlled or severe asthma are at a significantly increased risk for a fatal outcome if a systemic reaction occurs. Asthma must be stable (FEV1 > 80% predicted) before testing or treatment begins.
• Cardiovascular Health: Patients with underlying heart disease may be at greater risk if they require epinephrine, as epinephrine can cause stress on the heart (tachycardia, arrhythmias).
• Beta-Blocker Use: Patients taking beta-blockers may be resistant to the effects of epinephrine, making a systemic reaction much harder to treat.

• Immediate Observation: A minimum 30-minute wait time in the clinic after any administration is mandatory.
• Lung Function: For asthmatic patients, peak flow or spirometry may be checked before administration.
• Skin Assessment: The test site must be monitored for excessive swelling or signs of infection (though infection is extremely rare).
• OIT Monitoring: Patients on oral therapy may require periodic blood tests to measure milk-specific IgE and IgG4 levels to track the progress of desensitization.

Generally, Casein, Lactococcus Lactis Cultured does not affect the ability to drive. However, if a systemic reaction occurs or if antihistamines are administered to treat a local reaction, these can cause drowsiness or impaired coordination. Patients should not drive if they feel unwell after a procedure.

Alcohol should be avoided for several hours before and after administration of the extract, especially during OIT. Alcohol increases blood flow and can increase the rate of allergen absorption, potentially lowering the threshold for a systemic reaction.

If the extract is being used for skin testing, there is no 'discontinuation' process. If used for OIT, stopping the medication suddenly will result in a loss of clinical tolerance. If you must stop, do so only under the direction of your allergist to avoid the risk of a severe reaction upon the next accidental exposure to dairy.

> Important: Discuss all your medical conditions, especially respiratory or heart problems, with your healthcare provider before starting Casein, Lactococcus Lactis Cultured.

• Beta-Adrenergic Blockers (Beta-Blockers): These medications (e.g., propranolol, metoprolol) are contraindicated or used with extreme caution. Clinical Consequence: They block the receptors that epinephrine acts upon. If the patient has anaphylaxis, epinephrine may fail to reverse the airway obstruction and low blood pressure, potentially leading to a fatal outcome.
• MAO Inhibitors (MAOIs): Used for depression or Parkinson's. Clinical Consequence: These can potentiate the effects of pressor amines (like epinephrine), leading to a hypertensive crisis if an allergic reaction needs to be treated.

• ACE Inhibitors: Medications like lisinopril. Clinical Consequence: These may interfere with the body's natural compensatory mechanisms during anaphylaxis, potentially making the reaction more severe.
• Tricyclic Antidepressants: Similar to MAOIs, these can increase the cardiovascular sensitivity to epinephrine.

• Antihistamines (H1 Blockers): Medications like loratadine (Claritin), cetirizine (Zyrtec), or diphenhydramine (Benadryl). Clinical Consequence: These drugs suppress the skin's response to histamine. Management: These must be discontinued 3 to 7 days before skin testing to avoid a false-negative result.
• H2 Blockers: Medications like famotidine (Pepcid). Clinical Consequence: These can also slightly reduce skin reactivity and should be stopped 48 hours before testing.
• Systemic Corticosteroids: Long-term use of prednisone can thin the skin and potentially dampen the immune response, though short-term use usually does not interfere with skin prick tests.

• Dairy Products: Obviously, the patient should avoid all other dairy products during the testing phase to ensure results are not confounded.
• High-Fat Meals: When taking the extract orally (OIT), a very high-fat meal may delay absorption, while an empty stomach may accelerate it too quickly. Consistency is key.
• Hot Foods/Liquids: Consuming very hot soup or tea immediately after an oral dose can increase local blood flow in the mouth and throat, increasing the risk of local itching and swelling.

• St. John's Wort: May interact with medications used to treat anaphylaxis.
• Licorice Root: Can affect blood pressure and electrolyte balance, potentially complicating the management of a systemic reaction.

• Skin Test Suppression: As mentioned, antihistamines and certain antidepressants can lead to false-negative results.
• Serum IgE: The administration of the extract itself does not usually interfere with blood-based allergy tests (ImmunoCAP), but the results of the skin test and blood test should be interpreted together by a specialist.

> Important: Tell your doctor about ALL medications, supplements, and herbal products you are taking, especially those for blood pressure or heart health.

• Severe, Uncontrolled Asthma: Patients with an FEV1 (Forced Expiratory Volume) consistently below 80% of predicted or those with frequent acute exacerbations must not undergo testing or treatment. Mechanism: The risk of a fatal bronchospasm during a systemic reaction is unacceptably high.
• Recent Myocardial Infarction (Heart Attack): Within the last 3-6 months. Mechanism: The heart may not tolerate the stress of a systemic allergic reaction or the high doses of epinephrine required to treat it.
• History of Severe Anaphylaxis to Casein: If a patient has a known history of near-fatal reactions to trace amounts of casein, skin testing may be too dangerous and in vitro (blood) testing is preferred.

• Pregnancy: While not an absolute contraindication for testing, it is generally avoided to prevent the risk of anaphylaxis-induced uterine contractions or fetal hypoxia. Immunotherapy should not be started during pregnancy.
• Acute Infection or Fever: Testing should be postponed until the patient is well, as the immune system is already 'primed,' which may increase the risk of a systemic reaction or produce unreliable results.
• Severe Atopic Dermatitis (Eczema): If the skin is extensively involved with eczema, there may not be enough 'clear' skin to perform an accurate test, and the skin may be hyper-reactive (dermographism).

• Bovine Serum Albumin: Patients allergic to beef may show cross-reactivity.
• Other Mammalian Milks: There is a high degree of cross-reactivity (up to 90%) between cow's milk casein and casein from goats and sheep. If you are allergic to this extract, you are likely allergic to those milks as well.

> Important: Your healthcare provider will evaluate your complete medical history, including your current asthma control and heart health, before prescribing or using Casein, Lactococcus Lactis Cultured.

Pregnancy Category: Not formally assigned by the FDA for most non-standardized extracts, but generally considered Category C.

• Risks: The primary danger is not the extract itself, but the risk of anaphylaxis. Anaphylaxis in the mother can lead to maternal hypotension, which causes placental hypoperfusion (reduced blood flow to the baby) and fetal hypoxia (lack of oxygen).
• Clinical Guidance: Diagnostic skin testing should be deferred until postpartum unless the information is critical for immediate management. Allergy immunotherapy (OIT) should never be initiated during pregnancy, though maintenance doses may sometimes be continued if the patient is stable and the benefit outweighs the risk.

It is unknown if the components of Casein, Lactococcus Lactis Cultured are excreted in human milk. However, since casein is a natural component of human milk (though different in structure from bovine casein), the risk to the infant is considered minimal. The primary concern remains the mother's safety and the potential need for emergency medications like epinephrine, which is compatible with breastfeeding in emergency situations.

• Approved Use: This extract is most frequently used in children, as milk allergy is a primary pediatric concern.
• Growth Effects: There are no known effects on growth or development from the extract itself. However, the restrictive diets necessitated by a milk allergy diagnosis require careful nutritional monitoring to ensure adequate calcium and Vitamin D intake.
• Safety: Children are at higher risk for accidental exposure and systemic reactions during OIT. Close supervision by parents and school staff is essential.

• Cardiovascular Risk: Older adults are more likely to have underlying heart disease or be taking medications like beta-blockers or ACE inhibitors, which significantly increase the risk profile of allergenic extracts.
• Skin Reactivity: Reduced skin turgor and mast cell response may lead to smaller wheal sizes, potentially leading to under-diagnosis if not interpreted correctly.

In patients with chronic kidney disease, 'uremic pruritus' or skin anergy may occur. This can make the results of skin prick testing difficult to interpret. No specific dose adjustments are needed, but clinical correlation with blood tests is highly recommended.

There are no specific precautions for hepatic impairment. The proteins in the extract are processed by local and systemic proteases rather than the cytochrome P450 system in the liver.

> Important: Special populations require individualized medical assessment. Always inform your allergist if you are pregnant, planning to become pregnant, or have underlying heart or kidney conditions.

Casein, Lactococcus Lactis Cultured acts as an antigen that targets specific IgE antibodies bound to the high-affinity IgE receptor (FcεRI) on the surface of mast cells and basophils.

1. 1Sensitization Phase: In allergic individuals, previous exposure to milk proteins has led to the production of Casein-specific IgE.
2. 2Elicitation Phase: Upon administration of the extract, the multivalent casein proteins (alpha, beta, and kappa fractions) bind to multiple IgE molecules simultaneously.
3. 3Degranulation: This cross-linking triggers an intracellular signaling cascade involving tyrosine kinases (like Syk), leading to the rapid release of pre-formed mediators (histamine, tryptase) and the de novo synthesis of leukotrienes and cytokines.
4. 4Clinical Result: This causes the immediate hypersensitivity reaction seen in skin tests or the systemic symptoms of anaphylaxis.

• Dose-Response: There is a clear dose-response relationship between the concentration of the extract and the size of the wheal/flare reaction, up to a 'saturation' point.
• Time to Onset: 5 to 15 minutes for the immediate skin reaction.
• Duration of Effect: The immediate skin reaction typically resolves within 1 to 2 hours, though late-phase reactions can occur 6 to 12 hours later.

| Parameter | Value |

|---|---|

| Bioavailability | Negligible (Skin Prick); Variable (Oral) |

| Protein Binding | N/A (Antigen-Antibody binding) |

| Half-life | Minutes to hours (Proteolysis) |

| Tmax | 15-20 minutes (Skin reaction) |

| Metabolism | Tissue and Plasma Proteases |

| Excretion | Not renally excreted as intact protein |

• Molecular Components: A complex mixture of phosphoproteins. Alpha-s1 casein (~39-46%), Alpha-s2 (~8-11%), Beta-casein (~25-35%), and Kappa-casein (~8-15%).
• Modification: Culturing with Lactococcus lactis involves enzymatic cleavage of certain peptide bonds and lactic acid production, which may alter the 3D conformation (folding) of the proteins.
• Solubility: Caseins are relatively insoluble in water at their isoelectric point (pH 4.6) but are soluble in the buffered saline or glycerinated solutions used for extracts.

Casein, Lactococcus Lactis Cultured belongs to the class of Non-Standardized Food Allergenic Extracts. It is distinct from 'Standardized Extracts' (like Ragweed or Honeybee venom) because there is no established national standard for its biological potency.