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Vitamin C and Antioxidants Research
Research Guide
What is Vitamin C and Antioxidants Research?
Vitamin C and Antioxidants Research is the scientific study of ascorbic acid's antioxidant properties and its roles in immune function, cancer treatment, sepsis management, neuroprotection, pharmacokinetics, and potential applications in diseases like COVID-19.
This field encompasses 54,966 works exploring Vitamin C's mechanisms as an antioxidant in health and disease. Research addresses its impacts on immune function, sepsis, cancer, and neuroprotection through oral and intravenous administration. Key studies examine free radicals, oxidative stress, and antioxidant defenses in aging and pathology.
Topic Hierarchy
Research Sub-Topics
Pharmacokinetics of Intravenous Ascorbic Acid
This sub-topic studies plasma concentration profiles, bioavailability, and dose-dependent pharmacokinetics of high-dose IV vitamin C in humans. Researchers compare IV vs. oral routes and model tissue distribution.
Vitamin C in Sepsis Management
This sub-topic explores high-dose vitamin C supplementation in septic patients, focusing on mortality reduction, organ function improvement, and combination therapies. Researchers conduct RCTs and meta-analyses.
Neuroprotective Effects of Ascorbic Acid
This sub-topic investigates vitamin C's role in mitigating oxidative stress, excitotoxicity, and neurodegeneration in stroke, TBI, and Parkinson's models. Researchers examine neuronal uptake and antioxidant mechanisms.
Ascorbic Acid and Immune Function Modulation
This sub-topic covers vitamin C's enhancement of neutrophil function, lymphocyte proliferation, and cytokine regulation during infections. Researchers study deficiency impacts and supplementation in immunocompromised states.
Vitamin C in Cancer Therapy Adjunct
This sub-topic evaluates high-dose IV vitamin C as pro-oxidant therapy in cancer, targeting tumor cells selectively while sparing normals. Researchers assess synergy with chemotherapy and survival outcomes.
Why It Matters
Vitamin C and antioxidants research informs clinical practices in sepsis management and immune support, where intravenous administration shows potential benefits. For instance, Barry Halliwell and John M.C. Gutteridge in "Free radicals in biology and medicine" (1991) detailed free radical roles in biology, cited 17,237 times, influencing treatments for oxidative damage in vascular systems. B N Ames et al. in "Oxidants, antioxidants, and the degenerative diseases of aging" (1993) linked oxidant by-products to DNA, protein, and lipid damage contributing to cancer and aging, cited 5,956 times, guiding antioxidant interventions in chronic diseases. These findings support applications in neuroprotection and postischemic injury, as in Franklin H. Epstein and Joe M. McCord's "Oxygen-Derived Free Radicals in Postischemic Tissue Injury" (1985), cited 5,441 times, highlighting free radical contributions to reperfusion injury.
Reading Guide
Where to Start
"Free radicals in biology and medicine" by Barry Halliwell et al. (1991) is the starting point for beginners, as its 17,237 citations establish foundational concepts of free radicals central to understanding Vitamin C's antioxidant roles.
Key Papers Explained
Barry Halliwell et al.'s "Free radicals in biology and medicine" (1991) provides the core framework on free radical biology, which B N Ames et al.'s "Oxidants, antioxidants, and the degenerative diseases of aging" (1993) builds upon by linking oxidants to aging diseases. Franklin H. Epstein and Joe M. McCord's "Oxygen-Derived Free Radicals in Postischemic Tissue Injury" (1985) extends this to reperfusion injury mechanisms. Vijaya Lobo et al.'s "Free radicals, antioxidants and functional foods: Impact on human health" (2010) applies these concepts to dietary antioxidants like Vitamin C. Esra Birben et al.'s "Oxidative Stress and Antioxidant Defense" (2012) and Qiang Ma's "Role of Nrf2 in Oxidative Stress and Toxicity" (2013) detail cellular defenses.
Paper Timeline
Most-cited paper highlighted in red. Papers ordered chronologically.
Advanced Directions
Current frontiers emphasize Vitamin C's intravenous applications in sepsis, cancer, and COVID-19, with focus on pharmacokinetics and neuroprotection. No recent preprints or news coverage available, so ongoing work likely refines high-dose protocols from established papers like those on free radicals and oxidative stress.
Papers at a Glance
| # | Paper | Year | Venue | Citations | Open Access |
|---|---|---|---|---|---|
| 1 | Free radicals in biology and medicine | 1991 | General Pharmacology T... | 17.2K | ✕ |
| 2 | Vitamin D Deficiency | 2007 | New England Journal of... | 13.3K | ✕ |
| 3 | Evaluation, Treatment, and Prevention of Vitamin D Deficiency:... | 2011 | The Journal of Clinica... | 10.2K | ✓ |
| 4 | Oxidants, antioxidants, and the degenerative diseases of aging. | 1993 | Proceedings of the Nat... | 6.0K | ✓ |
| 5 | Oxygen-Derived Free Radicals in Postischemic Tissue Injury | 1985 | New England Journal of... | 5.4K | ✕ |
| 6 | Free radicals, antioxidants and functional foods: Impact on hu... | 2010 | Pharmacognosy Reviews/... | 5.3K | ✓ |
| 7 | Induction of the Vitamin D Receptor Attenuates Autophagy Dysfu... | 2017 | PubMed | 5.2K | ✕ |
| 8 | [1] Role of free radicals and catalytic metal ions in human di... | 1990 | Methods in enzymology ... | 5.0K | ✕ |
| 9 | Oxidative Stress and Antioxidant Defense | 2012 | World Allergy Organiza... | 4.8K | ✓ |
| 10 | Role of Nrf2 in Oxidative Stress and Toxicity | 2013 | The Annual Review of P... | 4.6K | ✕ |
Frequently Asked Questions
What are the main roles of Vitamin C in this research field?
Vitamin C, or ascorbic acid, acts primarily as an antioxidant, scavenging free radicals generated by metabolism and environmental factors. Studies cover its effects on immune function, sepsis management, cancer treatment, and neuroprotection. Research also examines pharmacokinetics for oral and intravenous use.
How do free radicals contribute to disease according to key papers?
Free radicals cause damage to DNA, protein, and lipid, contributing to aging and degenerative diseases like cancer, as shown in B N Ames et al.'s "Oxidants, antioxidants, and the degenerative diseases of aging" (1993). Barry Halliwell et al. in "Free radicals in biology and medicine" (1991) explored their roles in biology and medicine. Oxygen-derived free radicals mediate postischemic tissue injury, per Franklin H. Epstein and Joe M. McCord (1985).
What is the impact of oxidative stress and antioxidants?
Oxidative stress from reactive oxygen species damages cells and underlies diseases, while antioxidants like Vitamin C mitigate this. Esra Birben et al. in "Oxidative Stress and Antioxidant Defense" (2012) describe defense mechanisms against oxidants. Vijaya Lobo et al. in "Free radicals, antioxidants and functional foods: Impact on human health" (2010) link antioxidants to health benefits via functional foods.
How does Nrf2 factor into antioxidant research?
Nrf2 regulates antioxidant responses to oxidative stress from metabolism and toxins. Qiang Ma in "Role of Nrf2 in Oxidative Stress and Toxicity" (2013) explains Nrf2's protective role in controlled oxidant production. This pathway counters damage in various diseases.
What methods are used to study Vitamin C pharmacokinetics?
Research compares oral and intravenous Vitamin C administration to assess bioavailability and therapeutic levels. Studies focus on high-dose intravenous use for sepsis and cancer. This informs dosing in clinical settings for immune and neuroprotective effects.
What is the current state of Vitamin C research in COVID-19?
Papers investigate Vitamin C's potential role in COVID-19 treatment via antioxidant and immune-modulating effects. The field totals 54,966 works, covering its use alongside sepsis management strategies. No recent preprints or news updates were available in the data.
Open Research Questions
- ? How do high-dose intravenous Vitamin C pharmacokinetics differ from oral administration in achieving therapeutic plasma levels for sepsis and cancer?
- ? What are the precise neuroprotective mechanisms of Vitamin C against oxidative stress in traumatic brain injury models?
- ? To what extent do antioxidants like Vitamin C modulate immune function in viral infections such as COVID-19?
- ? How does interplay between free radicals, catalytic metal ions, and antioxidants influence human disease progression?
- ? What thresholds of oxidant production trigger Nrf2 activation versus toxicity in aging-related degenerative diseases?
Recent Trends
The field holds steady at 54,966 papers with no specified 5-year growth rate.
Highly cited works from 1985-2013, such as "Free radicals in biology and medicine" (1991, 17,237 citations), continue dominating, indicating sustained interest in foundational free radical and oxidative stress mechanisms without new preprints or news in the last 12 months.
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