{
    "title": "Rejuvenation : Nicotinamide MonoNucleotide (NMN) vs Ageing",
    "inventor_name": "David Sinclair et al",
    "publication_year": 2013,
    "device_name": "Nicotinamide Mononucleotide (NMN)",
    "goal": "Reverse ageing and improve healthspan by restoring cellular NAD+ levels and mitochondrial-nuclear communication.",
    "problem_addressed": "Age-related decline in NAD+ levels, mitochondrial dysfunction, and associated diseases such as cancer, type-2 diabetes, and muscle wasting.",
    "concept_summary": "NMN, a direct precursor of NAD+, is administered to animals (and potentially humans) to boost intracellular NAD+ concentrations. Elevated NAD+ re-establishes communication between mitochondria and the nucleus, activates sirtuin genes, and mimics the beneficial effects of calorie restriction and exercise, leading to rapid improvements in muscle function and other ageing markers.",
    "detailed_description": "University of NSW researchers injected mice with NMN at a dose of 500 mg per kilogram of body weight per day. Within one week, older mice displayed muscle performance indistinguishable from younger animals, and cellular assays showed restoration of NAD+ levels and improved mitochondrial-nuclear signaling. The underlying mechanism involves conversion of NMN to NAD+, which activates sirtuin deacetylases (SIRT1-7) and reduces the pseudohypoxic state driven by HIF-1alpha accumulation. Human trials are proposed, but the compound is currently expensive (~$1,000 / g). The invention also includes methods for modulating the NAD+ salvage pathway (e.g., NPT1, PNC1, NMA1, NMA2) to extend cellular lifespan and stress resistance.",
    "category": "Medical & Dental Technologies",
    "principles": [
        "NAD+ supplementation",
        "Sirtuin activation",
        "Mitochondrial-nuclear communication restoration"
    ],
    "scientific_domains": [
        "Biochemistry",
        "Molecular Biology",
        "Gerontology"
    ],
    "mechanisms_of_action": [
        "Conversion of NMN to NAD+ in cells",
        "Activation of SIRT1-7 sirtuin genes",
        "Improved mitochondrial-nuclear signaling",
        "Mimicry of calorie-restriction and exercise effects"
    ],
    "materials": [
        "Nicotinamide mononucleotide (NMN)",
        "Nicotinamide",
        "NAD+"
    ],
    "energy_sources": [],
    "inputs": [
        "NMN dosage (500 mg kg^-^1 day^-^1)",
        "Animal or human subjects"
    ],
    "outputs": [
        "Increased intracellular NAD+ levels",
        "Improved muscle function",
        "Reduced age-related cellular stress",
        "Potential extension of lifespan"
    ],
    "claimed_performance": "500 mg kg^-^1 day^-^1 NMN reversed ageing markers in mice within one week; cost estimated at $1,000 per gram, leading to daily costs of $35-$43 k for a human adult.",
    "experimental_evidence": "Mouse studies showed that NMN injection restored NAD+ levels, improved mitochondrial function, and made muscle performance of old mice indistinguishable from that of young mice after just one week.",
    "replication_status": "Only pre-clinical mouse data reported; human trials have not yet begun and no independent replication is documented.",
    "keywords": [
        "NMN",
        "NAD+",
        "Sirtuins",
        "Anti-aging",
        "Mitochondrial communication",
        "Calorie restriction mimetic"
    ],
    "related_technologies": [
        "NAD+ precursors (e.g., NR, nicotinamide)",
        "Sirtuin activators (e.g., resveratrol)",
        "Calorie-restriction mimetics"
    ],
    "controversy_level": "medium",
    "confidence_score": 0.85,
    "practicability_score": 0.6,
    "fringe_score": 0.2,
    "evidence_strength": 0.5,
    "risk_score": 0.2,
    "trl_estimate": 5,
    "source_urls": [
        "http://www.news.com.au/lifestyle/health/university-of-nsw-research-finds-compound-that-can-reverse-ageing/story-fneuzlbd-1226786877989",
        "http://www.cell.com/retrieve/pii/S0092867413015213?cc=y",
        "http://www.news.com.au/lifestyle/health/aussie-scientist-david-sinclair-claims-anti-aging-superbug-breakthrough/story-fneuzlbd-1226592865613"
    ],
    "organizations": [
        "University of New South Wales",
        "Harvard Medical School",
        "Cell (journal)",
        "Aldrich Chemical Company"
    ],
    "applications": [
        "Anti-aging therapy",
        "Treatment of age-related diseases (cancer, diabetes, muscle wasting)",
        "Enhancement of healthspan"
    ],
    "limitations": [
        "Very high cost of NMN",
        "Lack of human clinical data",
        "Potential unknown side effects"
    ],
    "open_questions": [
        "Long-term safety and efficacy in humans",
        "Optimal dosing regimen",
        "Whether benefits translate to lifespan extension"
    ],
    "red_flags": [
        "Claims of reversing ageing may be overstated without human data",
        "Cost prohibitive for widespread use"
    ],
    "evidence_quotes": [
        "Just a week after older mice were injected with the compound they had improvements in their muscles that made them indistinguishable from younger animals.",
        "The research used the equivalent of 500mg of NMN for every kilogram of body weight per day.",
        "NMN injected into an animal body transforms into NAD to repair the broken communication channels.",
        "If the compound is administered early enough in the ageing process, in just a week, the muscles of older mice were indistinguishable from the younger animals.",
        "Human trials of the compound that turns back ageing by improving communication between parts of a cell could start as early as next year."
    ]
}