November 13, 2001

Neurochem's data show early inflammation response during amyloid deposition in Alzheimer's Disease model.

Presentation at 31st Society for Neuroscience Annual Meeting in San Diego


New: SFN Poster available.

Neurochem Inc. (TSX : NRM) will present new data tomorrow November 14, at the 31st Society for Neuroscience (SFN) Annual Meeting in San Diego (November 12-16, 2001). The presentation will describe new data regarding the early onset of inflammation as related to the amyloid deposition process in a transgenic mouse model for Alzheimer's Disease. The data is significant in that it suggests that amyloid plays a major role in the neurotoxicity that results from deposition, and also acts as a trigger for inflammation very early on in the progression of Alzheimer's Disease.

"This study reinforces the importance of amyloid toxicity early in the progression of Alzheimer's Disease and confirms Neurochem's anti-amyloid approach," said Dr. Francine Gervais, Vice President of Research and Development at Neurochem. "The animal model suggests that by targeting amyloid early on, Neurochem's GAG Mimetics core technology could diminish the risk of degeneration by reducing the inflammation as well as the toxicity early in the process of amyloid plaque formation," she added.

About the Study

The presentation, entitled "Early Inflammatory Response During Amyloid Deposition in TgCRND8 Mice," utilizes a transgenic animal model harboring a mutant form of the human amyloid precursor protein (hAPP) developed by the University of Toronto and used by Neurochem. This model was used to determine the onset of amyloid-induced inflammation in the brain during the process of amyloid fibrillogenesis. Inflammation, in addition to amyloid plaque build-up, has been heavily implicated in the development of Alzheimer's Disease. This study sought to determine whether inflammation precedes, coincides or follows amyloid plaque formation. Conducted by Neurochem scientists in conjunction with researchers from McGill University in Montreal and the Centre for Research in Neurodegenerative Diseases at the University of Toronto, the study showed significant evidence that inflammation occurs early on in the development of brain amyloidosis and may precede the formation of aggregated plaques.

About GAG Mimetics

Neurochem's innovative core technology, GAG Mimetics, consists of the design and synthesis of compounds that mimic the properties of sulphated glycosaminoglycans' (GAGs) complex carbohydrates that promote the amyloid fibril formation and deposition that is characteristic of Alzheimer's Disease.

Neurochem's synthetic compounds compete with the naturally occurring GAGs by interfering with the formation and deposition of amyloid aggregates. This biochemical "deception" has been proven successful in studies showing the compounds disrupt the formation of indicators of Alzheimer's Disease and many other detrimental amyloid-based diseases. Neurochem is currently developing therapeutic and diagnostic drug candidates for the treatment of Alzheimer's disease, as well as a vaccine.

The abstract can be viewed at http://sfn.scholarone.com/itin2001/ under the name of the first author Mrs. S. Dudal and the poster at www.neurochem.com/NewsRoom.htm

About Neurochem

Neurochem is an industry leader in the development of therapeutic drugs and diagnostic tools for central nervous system and amyloid-related diseases associated with aging. The Company has built a strong product pipeline by developing a novel, proprietary series of compounds that inhibit the formation, deposition and toxic effects of amyloid fibrils within the body. Neurochem's therapeutic programs target Alzheimer's Disease, Epilepsy, Systemic Amyloidosis, Diabetes Type II and Hemorrhagic Stroke (due to Cerebral Amyloid Angiopathy). Neurochem is using a multi-pronged approach towards the development of pharmaceuticals for Alzheimer's Disease, including glycosaminoglycans (GAGs) mimetics, a vaccine, an anti-inflammatory and a neuroprotective approach as well as the creation of a diagnostic imaging tool. The Company has advanced to date three drug candidates to clinical trials: Alzhemed™, for the treatment of Alzheimer's Disease, Fibrillex™, for the orphan disease Secondary Amyloidosis, and Cerebril™, for Hemorrhagic Stroke. At present, the Company employs over 70 people and is located in Saint-Laurent, Canada (www.neurochem.com).

All of the statements contained in this news release, other than statements of fact which are independently verifiable at the date hereof, are forward-looking statements. Such statements, based as they are on the current expectations of management, inherently involve numerous risks and uncertainties, known and unknown. Some examples of known risks are: the impact of general economic conditions, general conditions in the pharmaceutical industry, changes in the regulatory environment in the jurisdictions in which Neurochem does business, stock market volatility, fluctuations in costs, and changes to the competitive environment due to consolidation or otherwise. Consequently, actual future results may differ materially from the anticipated results expressed in the forward-looking statements.

For further Information, please contact:
Dr. Lise Hébert
Vice President, Corporate Communications
lhebert@neurochem.com

275 Armand-Frappier
Laval (Quebec)
H7V 4A7
Tel: (450) 680-4500
Fax: (450) 680-4501

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