Novartis - Allergenic Asthma Applied to Rats

Released on: April 15, 2008, 3:49 am

Press Release Author: A.L.F. Crime Investigation Agency (CIA)

Industry: Pharmaceuticals

Press Release Summary: This information campaign is dedicated to the victims of
Novartis AG: Gunned-down Brazilian farmers - Tortured, maimed and killed animals in
labs - Victims of sexual exploitation by the management - Africans left to die for
profit - Patients poisoned and killed with harmful drugs - Babies fed with unhealthy
food

Press Release Body: Part 8: Novartis Switzerland: Experiments Killing Rats

The model of repeated low dose allergen challenge has been applied to rats in order
to study the major features of chronic airways inflammation. Male rown Norway (BN)
rats (Iffa-Credo, L\'Arbresle, France) weighing 250-300 g were used. The animals were
briefly anaesthetized.
No exposure: Rats were examined by MRI and killed immediately after for histological
analysis.
Single exposure: One week after sensitization, animals were given i.t. OA (0.3
mg/kg) or saline (0.2 ml i.t.). These animals were analyzed by MRI 24 h after
challenge. They were killed immediately after the MRI session for BAL fluid analysis
or histology.
Multiple exposures at 96 h interval: Rats were challenged four times with OA (0.3
mg/kg i.t.) or saline (0.2 ml i.t.), the first challenge taking place one week after
sensitization. The procedure adopted for a single exposure was repeated at 96 h, 192
h and 288 h after the first challenge. For each animal MRI images were acquired 6,
24, 48, 96 h after each OA challenge. Animals were killed after the 312 h
acquisition (24 h after the fourth challenge) for BAL fluid analysis or histology.

A detailed description of the BAL procedure and the analysis of the parameters of
inflammation was provided. Immediately after MRI acquisitions rats were killed by an
overdose of pentobarbital (250 mg/kg i.p.). Lungs were fixed by slow in-situ
inflation.

Student\'s t test was also performed using vehicle-treated rats as the control group.

Challenge of actively sensitized BN rats with OA led to an inflammatory response in
the airways as assessed by changes in the BAL fluid leukocyte numbers.

Our observations are consistent with other studies performed in guinea pigs, rats
and mice.

However, because of respiratory movements, it would be necessary to artificially
ventilate and paralyze the rats.


Am J Physiol Lung Cell Mol Physiol (November 3, 2006): Lung inflammation and
vascular remodeling after repeated allergen challenge detected noninvasively by MRI




Web Site: http://www.novartiskills.eu

Contact Details: Animal Liberation Front
The A.L.F. Crime Investigation Agency (CIA)
Contact the A.L.F. CIA, agent Jean Vries
alfcia_vries@mail2world.com

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