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High antibiotic consumption for the treatment of bacterial and viral infections in recent decades has resulted in a failure of their efficacy. The number of recurrent bacterial infections suffered by the general population in which the antibiotic is not effective (derived from resistance) is increasing every day, and bacterial immunotherapy plays a very important role in the prevention and prophylaxis of future bacterial infections.

Antibiotic treatment failure derived from resistance leads to preventive therapies: Bacterial Immunotherapy.

Bacterial Immunotherapy

The treatment of recurrent bacterial infections with bacterial immunotherapy is an individualised prophylactic treatment which represents an alternative to antibiotic treatment, and an effective measure in the prevention of recurrent bacterial infections (tonsillitis, sinusitis, pharyngitis, bronchitis, cystitis, prostatitis, etc.).

Bacterial vaccines can be classified according to the source of the sample as either auto-vaccines or polybacterial vaccines.

Auto-vaccines are created based on the isolation, culture and inactivation of the strains of bacteria isolated from the patient's sample, and represent an effective prophylactic therapy in the individualised treatment of recurrent bacterial infections.

On the other hand, a polybacterial vaccine is manufactured from the collection of bacterial strains selected by the specialist, based on the bacterial agent causing the condition in question.

There are two types of presentations available on the market:

  • Nasopharyngeal
  • Sublingual

These presentations facilitate treatment compliance by the patient.

Individualised treatment for the prevention of recurrent bacterial infections.

 

VACUNAS VACTERIANAS VACUNAS VACTERIANAS

Immunotherapy

The treatment of allergic diseases is mainly based on three measures of action; avoidance of the allergen or substance causing the allergic reaction, treatment of symptoms through the use of medication, i.e., drug treatment and immunotherapy (single aetiological treatment that acts at the level of the cause of the allergic problem).

Immunotherapy is the only etiological treatment that acts on the origin of allergic disease

Allergen immunotherapy vaccines are the only effective treatment which act from the source of the problem, changing the course of the allergic disease, preventing new sensitisations and preventing the development of asthma in allergic patients. Therefore, the World Health Organization (WHO), considers this type of treatment as the only effective treatment that treats the cause of the allergic disease, whose effects on the allergic patient are to induce a state of clinical and immunological tolerance in the face of future exposure to the allergen or substance causing the allergic reaction.

Immunotherapy consists of the administration of increasing doses of the allergen or substance causing the allergic reaction.

The efficacy of allergen immunotherapy treatments is long-term. The recommended vaccination period ranges from 3 to 5 years, although the improvement of symptoms can be observed from 5 months. The specialist is responsible for annually assessing the condition of each patient in order to decide on the duration of the vaccination period in each case.

It is the only treatment approved by the World Health Organization which is effective in treating the cause of the allergy.

Laboratorios Diater offers specialists a wide range of immunotherapy treatments, classified according to the route of administration.

Subcutaneous administration

One of the forms of administration available in immunotherapy is the subcutaneous route. In this case, immunotherapy would be administered by giving injections of an allergen (pollens, mites, fungi, epithelial cells, etc.), the substance causing the allergic process, in the patient's arm.

Immunotherapy is normally administered in two phases; a first initiation phase in which the doses are weekly, until the maintenance dose is reached, and a second maintenance phase, in which the administration of the subsequent doses is done on a monthly basis, for a vaccination period ranging from 3 to 5 years. Currently, there are products that greatly shorten the initiation phase by achieving the maintenance dose in a single day and require only monthly injections. These treatments are much more convenient for patients.

Although immunotherapy is a long-term treatment, the improvement of the symptoms of allergic disease can be seen after the first year of treatment.

Administration of subcutaneous immunotherapy should be performed monthly under the supervision of a specialist doctor.

Sublingual administration

Laboratorios Diater has another effective form of administration of immunotherapy - the sublingual route. It consists of the administration of the allergen through the sublingual mucosa, by depositing the substance or allergen under the tongue and holding it there until completely absorbed.

The administration of this type of treatment, does not make it necessary to attend a medical centre or healthcare centre, since it may be administered daily in the patient’s home. In order to ensure the effectiveness of these treatments administered by this route, good patient compliance is of paramount importance, since administration is performed daily at home during the time estimated by the specialist. According to the WHO, this ranges from 3 to 5 years.

Laboratorios Diater has therefore developed innovative administration devices that improve the ease and convenience of use, ensuring greater treatment compliance.

The home administration of sublingual immunotherapy facilitates the allergic patient’s treatment compliance.

Allergic disease may result in rhinitis, rhinoconjunctivitis, asthma and/or urticaria. It is necessary to carry out a proper study for diagnosis, in which the specialist shall take into account both family and personal history, through a proper medical history (anamnesis), and the specialist will continue the study searching for the principal causative agent through a series of diagnostic tests performed “in vivo” (prick test, provocation tests and intradermal reaction) and "in vitro" (test in which a blood test is performed in order to detect high levels of certain antibodies indicative of allergic disease).

Laboratorios Diater offers the specialist a wide range of products and allergen extracts for the proper aetiological diagnosis of an allergy and to therefore determine the allergen responsible for the symptoms.

The diagnosis of the allergy is made using simple tests - both skin tests and blood tests.

IN VIVO METHODS

Medical history

This consists of gathering information from the patient, through specific questions put to the patients themselves, in order to obtain useful information to make the diagnosis of the disease. Therefore, a good medical history will facilitate the diagnosis and treatment of the allergy.

Skin Tests

prick test, consist of the administration of the allergen or substance suspected of causing the allergic reaction. This is performed on the skin of the upper side of the forearm through the inoculation of allergen extracts into the epidermis, by means of a puncture with a lancet. Any remaining liquid is eliminated afterwards, in order to ensure that there is no cross-contamination amongst several allergens, which may alter the validity of the results.

Subsequently, the patient will have to wait around 15-20 minutes, after which the doctor will take the reading and interpret the results according to the type of reaction that has taken place on the patient’s skin.

If the patient is allergic, a papule with swelling and redness at the puncture site will develop, due to the release of inflammatory mediators. This could mean that this allergen may be responsible for large parts of your allergic symptoms.

To check that the test was performed correctly, two controls will used: positive and negative. If the test was carried out correctly, a papule will be produced in the forearm area where the positive control (histamine) has been placed and no reaction of any type should occur in the case of the negative control (physiological saline solution). Generally, prick tests are safe, and they do not present a risk of an allergic reaction. However, generalised allergic reactions have sometimes been described with the conduct of these tests. Most times the allergic reactions were with medicinal products and in highly sensitive individuals.

On many occasions, for a correct and complete diagnosis, the specialist shall also resort to conducting "in vitro"tests after performing the skin tests.

A correct diagnosis begins with the conduct of skin tests with allergens, also called Prick Tests.

Intradermal Tests

Intradermal testing is another diagnostic method that helps determine whether an individual is allergic to a specific substance. This technique is used by the specialist when the skin prick tests are negative and the specialist suspects that the allergen in question is causing the allergic reaction. The test consists of the administration of a small amount of allergen or suspected substance under the surface of the skin. After 15-20 minutes, the area of application is examined for signs of an allergic reaction, consisting of a small urticaria, swelling and redness of the skin.

The intradermal test is a more sensitive technique than the prick test, providing better results at diagnosis. They are used particularly in the diagnosis of a drug allergy and bee or wasp sting venom.

The intradermal test is a more sensitive technique than the prick test, providing better results at diagnosis.

Provocation Tes

The provocation test, is another complementary method of diagnosis of the allergy. For this test, the suspected allergen of the allergic reaction is administered, through one of the following organs: nose, conjunctiva (eyes) or respiratory tract (lung), in order to reproduce the symptoms that could appear when an allergic individual is exposed naturally to an allergen.

There are three types of provocation depending on the affected organ:

  • Conjunctival provocationl: Application of the suspected substance in the conjunctiva of the eye. This test is conducted if there is an allergic conjunctival condition.
  • Nasal provocation: Application of the suspected substance in the nose. This test is conducted in the event of allergic rhinitis.
  • Bronchial provocation: Inhalation of the allergen in conditions that result in asthma or allergic respiratory problems.
The provocation tests reproduce the allergic symptoms in the affected target organ.

 

IN VITRO METHODS

To confirm the diagnosis of the allergy to a particular substance, blood tests are often conducted, demonstrating the presence of specific antibodies against a substance or allergen suspected of causing the allergic reaction. These tests detect the presence of immunoglobulin E (IgE), an antibody produced by the immune system of allergic individuals.

Blood tests for IgE antibodies aid a correct confirmatory diagnosis of an allergy.

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(i) By email to lopd@ferrer.com.

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