Nutritional Therapy for PKU Memory Function
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Solution Overview
Problem
Patients with phenylketonuria (PKU) and hyperphenylalanimenia face impaired recognition and working memory due to elevated phenylalanine levels, which disrupt biochemical processes and hinder cerebral protein synthesis, differing from the mechanisms underlying neurodegenerative disorders like Alzheimer's and dementia.
Innovation Solution
A nutritional therapy combining ω-3 polyunsaturated fatty acids (DHA, EPA, DPA), choline, B vitamins (vitamin B6, B12, B9), uridine, and specific amino acids to reduce brain phenylalanine levels and stimulate recognition and working memory, while ensuring the composition is substantially devoid of phenylalanine.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If phenylalanine levels are reduced in PKU patients, then recognition and working memory improve, but phenylalanine is an essential amino acid needed for protein synthesis and normal growth
Solution Approach 1:
The patent changes the concentration parameter of phenylalanine in the diet to a controlled low level, and simultaneously adjusts the parameters of complementary nutrients (omega-3 fatty acids, choline, B vitamins, uridine) to optimized levels. This parameter optimization allows sufficient protein synthesis while reducing neurotoxic effects on recognition and working memory
Solution Approach 2:
The patent creates a composite nutritional formulation combining multiple substances: low-phenylalanine protein sources, omega-3 polyunsaturated fatty acids (DHA, EPA, DPA), choline compounds, B vitamins (B6, B12, B9), and uridine. This composite approach addresses the contradiction by providing essential amino acids without excessive phenylalanine, while adding nutrients that support brain function and protein synthesis
2Reliability
If a nutritional therapy composition is developed to improve brain function in PKU, then recognition memory improves, but the composition complexity increases
Solution Approach 1:
The patent segments the nutritional therapy into distinct functional components: protein sources (low phenylalanine), fatty acid supplements (omega-3), choline compounds, B vitamin complex, and uridine. Each segment addresses a specific physiological need, making the complex formulation more manageable and understandable while maintaining overall efficacy for improving recognition memory
Data Source
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Figure 2A~2B
AI summary
The invention pertains to the use of a composition in the manufacture of a product or method for therapeutically improving, promoting, restoring or maintaining recognition and/or working memoryin a subject suffering from PKU and/or in a subject suffering from or at increased risk of impaired recognition and/or working memoryassociated with PKU, said composition comprising therapeutic amounts of: (i) at least one ω-3 polyunsaturated fatty acid (LCPUFA) selected from the group consisting of docosahexaenoic acid (DHA), eicosapentaenoic acid (EPA) and docosapentaenoic acid (DPA); (ii) choline, a choline salt and/or choline ester; and (iii) at least one B vitamin selected from the group consisting of vitamin B6, vitamin B12 and vitamin B9, including functional equivalents thereof, preferablyvitamin B6 and/or vitamin B12, and functional equivalents thereof.The invention also pertains to a composition for use in such use or method.