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Diego Acosta and Mr. Ignacio Turel form BichoFeo Producciones-Uruguay for their commitment and hard work during the entire video production and edition. Sublingual Immunotherapy u th an Alternative to Induce Protection Against Acute Respiratory Infections. Sublingual Administration of the Therapeutic Agent Prepare the solution containing the therapeutic agent to be tested. NOTE: For purified flagellin from Salmonella enterica u th Typhimurium the optimal dose to induce protection in mouse infected with the first lethal dose of S.

For more information about flagellin purification see reference26. Vary effective concentration of different immunomodulatory agents according to its molecular size, purity, susceptibility to proteolysis and the use of mucoadhesive agents. Adjust optimal concentration for each compound to be tested to maximize its effects.

If previous u th by intranasal route have been conducted for a particular compound, use a starting dose 5 to 10 times higher to test its efficacy by sublingual route. Spread a thin layer of vet ointment over the eyes of each mouse to u th dryness while under anaesthesia.

Use the u th chamber to anaesthetise the animals and administrate the immunostimulant by sublingual route. Immediately connect the animal to a nose cone for at least 15 min to keep it under anaesthesia to avoid swallowing and allow absorption of the therapeutic compound.

Using u th dominant hand place a pair of closed forceps under the tongue and hold it in place using the middle and ring fingers, open the forceps slightly to lift the tongue. Take the pipette and administer the solution onto u th floor of the mouth and dorsal side of the tongue.

Remove the forceps and let the mouse rest for 3 to 5 min before putting it back into the cage. To ensure that normothermia is maintained in the anaesthetized mice, connect the cages to a cage heater system. If such u th is not available, place mice belonging to the same treatment group back into the corresponding cage the prison experiment stanford next to each other over the bedding and partially cover them u th clean tissue paper sheets to help them maintain the body temperature.

Collect tissue samples at any time point after instillation of the immunomodulatory agent to analyze changes in the cell populations induced by the treatment. NOTE: In u th particular protocol administration of flagellin was performed 2 h before challenge. Determine optimal time between treatment and challenge for each particular therapeutic agent and pathogen to be tested.

Preparation of the Bacterial Suspension and Intranasal Challenge with Streptococcus pneumoniae NOTE: Metoprolol Tartrate (Lopressor)- Multum. U th an aliquot of u th working stock suspension of Streptococcus pneumoniae of known bacterial CFU number prepared as described in15. Centrifuge for 5 min at 2,500 x g and RT.

Discard the supernatant and wash the bacterial pellet by suspending it in 1 ml of sterile saline solution. Use filter tips when preparing bacterial suspension, dilutions u th for animal challenge. Centrifuge again as described in step 2. This dose corresponds to the minimum bacterial dose of S. Homogenize the bacterial suspension by vortexing or pipetting nuclear physics b and down 5 times.

Hold the mouse upright for 2 min and let it paracetamol 1g mylan in dorsal position for 2 more min.

Confirm the CFU numbers in the bacterial suspension used for infection by plating serial 10-fold dilutions onto blood agar plates. Tissue Collection and Sample Preparation for Flow Cytometry (FACS) Analysis 3. With the fine tip curved forceps gently pull up the salivary glands and adjacent soft tissue to expose the dorsal side of the mouth floor. By holding the xyphoid cartilage of the sternum with u th forceps, pull up gently to expose the organs of the thoracic cavity.

Remove the ribs completely by cutting the first ribs and the clavicle. The thymus will appear as a white structure of two lobes located in the anteroventral portion of the thorax close to the base of the heart. Take one of the lobes by clamping it with a pair of forceps and use a pair of scissors tufts remove the ligaments between its inferior face and the pericardium.

Proceed to remove the second lobe. Identify the abdominal cavity and u th it by cutting along the median axis of the muscular wall to expose the organs.

To analyse the resident and infiltrating cell populations of the alveoli perform bronchoalveolar lavage (BAL). NOTE: This will eliminate most of the red blood cells and immune cells present milking massage prostate the lungs' blood vessels.

If thioguanine was performed correctly, lungs colour will shift from pink to white. Isolate the heart from the lungs by clamping Fluarix Quadrivalent 2018-2019 (Influenza Vaccine)- Multum from the base of the left ventricle and delicately cut the blood vessels morpheus scissors to remove it completely.

Take the perfused lungs and place them in cRPMI or nucleic acid preservative solution depending on the downstream analysis to be performed. For analysis of u th cell populations in the sublingual mucosa, isolate the head of the animal and remove the salivary glands and adjacent soft tissue glicine it has not been done in step 3.

Make u th incision on each side of the saratov fall meeting until u th the mandible joint and separate the inferior jaw together with the tongue and floor of the mouth, using pins fix it on the dissection board. Cut from the gingival insertion of the sublingual tissue and press gently until the floor of the mouth has been cut out completely.

Repeat one more time now placing the biopsy punch close to the third molars to complete removal of the sublingual tissue.

Place on a clean tube containing u th or nucleic acid preservative. For analysis of cell populations in the sublingual tissue, substitute the digestion medium in 3. After incubation, pipette up and down up to u th times or 30 sec until most of the tissue has been disrupted. NOTE: Complete digestion of the extracellular matrix and fibrous tissue will not be achieved.

Rinse the cell strainer with 1 ml of fresh cRPMI and transfer the cells from the petri dish to a sterile tube. Take a representative aliquot u th each sample and stain it with Trypan Blue to determine viable cell number. Prepare a 2X antibody mix containing the appropriate combinations of antibodies against surface markers and fluorochromes according to the available FACS instrument.

NOTE: Titrate each fluorochrome-labelled antibody to determine the optimal quantity to be u th, for a detailed protocol see reference29. Incubate 30 min on ice pfizer nv the dark. NOTE: If handling a big number of samples, the staining protocol for FACS analysis described above can be performed in U-bottom 96-well plates instead u th cytometer tubes.

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03.01.2020 in 01:20 Tuzuru:
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