scholarly journals The Potential Role of Vitamin B12 in the Prevention of COVID-19 Complications: A Narrative Review

2021 ◽  
Author(s):  
Srinidhi Rai ◽  
Sindhu ◽  
Prajna ◽  
B. Shamantha Rai ◽  
P. Rithesh Pakkala
Keyword(s):  
Vitamin B12 ◽  
Potential Role ◽  
Inflammatory Responses ◽  
The Elderly ◽  
Research Review ◽  
High Dose ◽  
Substantial Impact ◽  
Gut Microbe ◽  
Cellular And Humoral Immunity

The elderly are more prone to mortality from COVID-19 infection, as they are susceptible to develop acute respiratory distress syndrome (ARDS). For COVID-19 patients with ARDS caused by sepsis or septic shock, high-dose parenteral vitamin B12 appears to be a potential new treatment option. Vitamin B12 may play a substantial impact in COVID-19 morbidity and mortality reduction owing to its function in DNA synthesis, cellular control, improvement of anti-inflammatory immune responses, and decrease of pro-inflammatory responses. This review aims to assess the functional role of Vitamin B12 in COVID-19 in terms of its immunomodulatory effect, role in cellular and humoral immunity and maintaining the gut microbe homeostasis. From data inception to June 2021, accessible electronic databases were searched for research/review articles reporting on the function of Vitamin B12 in COVID-19. Scopus, Web of Science, PubMed, WHO worldwide research on COVID-19 and the clinical trials registration “https://clinicaltrials.gov/” were used to conduct the systematic search by using keywords: “COVID-19 and “Vitamin B12”. Also, based on these outcomes, it can be concluded that Vitamin B12 may have a potential role in preventing COVID-19 complications. Further, studies evaluating the role of Vitamin B12 in COVID-19 may open a new array of ideas on the optimal and the well-tolerated dose and timing of its administration in COVID-19 patients.

scholarly journals Current Nanocarrier Strategies Improve Vitamin B12 Pharmacokinetics, Ameliorate Patients’ Lives, and Reduce Costs

Nanomaterials ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 743
Author(s):  
Marco Fidaleo ◽  
Stefano Tacconi ◽  
Carolina Sbarigia ◽  
Daniele Passeri ◽  
Marco Rossi ◽  
...  
Keyword(s):  
Side Effects ◽  
Vitamin B12 ◽  
Memory Performance ◽  
Oral Route ◽  
High Dose ◽  
Human Beings ◽  
Inborn Errors ◽  
Essential Nutrient

Vitamin B12 (VitB12) is a naturally occurring compound produced by microorganisms and an essential nutrient for humans. Several papers highlight the role of VitB12 deficiency in bone and heart health, depression, memory performance, fertility, embryo development, and cancer, while VitB12 treatment is crucial for survival in inborn errors of VitB12 metabolism. VitB12 is administrated through intramuscular injection, thus impacting the patients’ lifestyle, although it is known that oral administration may meet the specific requirement even in the case of malabsorption. Furthermore, the high-dose injection of VitB12 does not ensure a constant dosage, while the oral route allows only 1.2% of the vitamin to be absorbed in human beings. Nanocarriers are promising nanotechnology that can enable therapies to be improved, reducing side effects. Today, nanocarrier strategies applied at VitB12 delivery are at the initial phase and aim to simplify administration, reduce costs, improve pharmacokinetics, and ameliorate the quality of patients’ lives. The safety of nanotechnologies is still under investigation and few treatments involving nanocarriers have been approved, so far. Here, we highlight the role of VitB12 in human metabolism and diseases, and the issues linked to its molecule properties, and discuss how nanocarriers can improve the therapy and supplementation of the vitamin and reduce possible side effects and limits.

Potential role of NF-κB pathway in the immuno-inflammatory responses during human cystic echinococcosis

Acta Tropica ◽  
2020 ◽  
Vol 203 ◽  
pp. 105306 ◽  
Author(s):  
Sarah Tilioua ◽  
Dalila Mezioug ◽  
Zine-Charaf Amir-Tidadini ◽  
Yacine-Miloud Medjdoub ◽  
Chafia Touil-Boukoffa
Keyword(s):  
Cystic Echinococcosis ◽  
Potential Role ◽  
Inflammatory Responses ◽  
Human Cystic Echinococcosis

scholarly journals Unexplained Anemia in the Elderly: Potential Role of Arterial Stiffness

2016 ◽  
Vol 7 ◽  
Author(s):  
David Montero ◽  
Candela Diaz-Cañestro ◽  
Andreas Flammer ◽  
Carsten Lundby
Keyword(s):  
Arterial Stiffness ◽  
Potential Role ◽  
The Elderly

scholarly journals Vitamin D accelerates resolution of inflammatory responses during tuberculosis treatment

2012 ◽  
Vol 109 (38) ◽  
pp. 15449-15454 ◽  
Author(s):  
Anna K. Coussens ◽  
Robert J. Wilkinson ◽  
Yasmeen Hanifa ◽  
Vladyslav Nikolayevskyy ◽  
Paul T. Elkington ◽  
...  
Keyword(s):  
Vitamin D ◽  
Antimicrobial Therapy ◽  
Potential Role ◽  
Inflammatory Responses ◽  
Vitamin D Supplementation ◽  
Tuberculosis Treatment ◽  
Sputum Smear ◽  
High Dose ◽  
Increased Risk

Calcidiol, the major circulating metabolite of vitamin D, supports induction of pleiotropic antimicrobial responses in vitro. Vitamin D supplementation elevates circulating calcidiol concentrations, and thus has a potential role in the prevention and treatment of infection. The immunomodulatory effects of administering vitamin D to humans with an infectious disease have not previously been reported. To characterize these effects, we conducted a detailed longitudinal study of circulating and antigen-stimulated immune responses in ninety-five patients receiving antimicrobial therapy for pulmonary tuberculosis who were randomized to receive adjunctive high-dose vitamin D or placebo in a clinical trial, and who fulfilled criteria for per-protocol analysis. Vitamin D supplementation accelerated sputum smear conversion and enhanced treatment-induced resolution of lymphopaenia, monocytosis, hypercytokinaemia, and hyperchemokinaemia. Administration of vitamin D also suppressed antigen-stimulated proinflammatory cytokine responses, but attenuated the suppressive effect of antimicrobial therapy on antigen-stimulated secretion of IL-4, CC chemokine ligand 5, and IFN-α. We demonstrate a previously unappreciated role for vitamin D supplementation in accelerating resolution of inflammatory responses during tuberculosis treatment. Our findings suggest a potential role for adjunctive vitamin D supplementation in the treatment of pulmonary infections to accelerate resolution of inflammatory responses associated with increased risk of mortality.

Critical Issues in the Health of the Elderly: The Role of Physical Activity

1984 ◽  
Vol 3 (4) ◽  
pp. 199-208 ◽  
Author(s):  
Roy J. Shephard
Keyword(s):  
Physical Activity ◽  
Health Care ◽  
Potential Role ◽  
Health Care Expenditures ◽  
The Elderly ◽  
Health Care Needs ◽  
Care Needs ◽  
Present Evidence ◽  
Critical Issues

ABSTRACTThe potential role of physical activity in the primary, secondary, tertiary and quarternary treatment of disease is examined with particular reference to the health care needs of the elderly. Areas requiring further research are stressed. On present evidence, it would appear likely that enhanced physical activity could make a useful contribution to the containment of health care expenditures; however, it still has to be established how far the gains of physical condition and resultant improvements of health status that are seen in younger individuals could be realized by the various categories of geriatric patient.

scholarly journals COBALAMIN DEFICIENCY IN THE ELDERLY

2020 ◽  
Vol 12 (1) ◽  
pp. e2020043 ◽  
Author(s):  
Giacomo Marchi ◽  
Fabiana Busti ◽  
Acaynne Lira Zidanes ◽  
Alice Vianello ◽  
Domenico Girelli
Keyword(s):  
Vitamin B12 ◽  
Early Recognition ◽  
Bone Marrow Failure ◽  
Oral Treatment ◽  
Serum Vitamin ◽  
Vitamin B12 Deficiency ◽  
Signs And Symptoms ◽  
The Elderly ◽  
Cobalamin Deficiency ◽  
High Dose

Older people are at risk for cobalamin (vitamin B12) deficiency because of a number of common disorders (e.g. autoimmune gastritis) and drugs (e.g. antacids) that may alter its absorption and utilization. The prevalence of cobalamin deficiency increases with age, resulting particularly elevated in frail and institutionalized subjects. At variance with common sense, the diagnosis is far from simple and requires a high degree of suspicion, due to heterogeneity and non-specificity of the signs and symptoms, ranging from macrocytosis (with or without anemia) to neuropsychiatric manifestations, that characterize several other aging-related disorders, like hematological malignancies, diabetes, hypothyroidism or vasculopathies. Furthermore, the detection of low levels of serum vitamin B12 appears poorly sensitive and specific. Other biomarkers, like serum homocysteine or methylmalonic acid, have improved the diagnostic possibilities but are expensive, not widely available and may be influenced by some confounders (e.g. folate deficiency, or chronic renal failure). Early recognition and treatment are crucial, since a proportion of patients develop severe complications, such as bone marrow failure and irreversible neurological impairment. High-dose oral treatment has proven to be as effective as the parenteral route even in subjects with malabsorption, ensuring the complete resolution in the majority of cases. In this review, we trace the essential role of cobalamin in humans, the possible causes and impact of deficiency, the diagnostic challenges and the therapeutic options, between old and emerging concepts, with a particular focus on the elderly.

scholarly journals Potential Role of Phenolic Extracts of Mentha in Managing Oxidative Stress and Alzheimer’s Disease

Antioxidants ◽  
2020 ◽  
Vol 9 (7) ◽  
pp. 631
Author(s):  
Doaa M. Hanafy ◽  
Geoffrey E. Burrows ◽  
Paul D. Prenzler ◽  
Rodney A. Hill
Keyword(s):  
Oxidative Stress ◽  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Potential Role ◽  
The Elderly ◽  
Future Research ◽  
Phenolic Constituents ◽  
The Central Nervous System ◽  
Developed Nations

With an increase in the longevity and thus the proportion of the elderly, especially in developed nations, there is a rise in pathological conditions that accompany ageing, such as neurodegenerative disorders. Alzheimer’s disease (AD) is a neurodegenerative disease characterized by progressive cognitive and memory decline. The pathophysiology of the disease is poorly understood, with several factors contributing to its development, such as oxidative stress, neuroinflammation, cholinergic neuronal apoptotic death, and the accumulation of abnormal proteins in the brain. Current medications are only palliative and cannot stop or reverse the progression of the disease. Recent clinical trials of synthetic compounds for the treatment of AD have failed because of their adverse effects or lack of efficacy. Thus, there is impetus behind the search for drugs from natural origins, in addition to the discovery of novel, conventional therapeutics. Mints have been used traditionally for conditions relevant to the central nervous system. Recent studies showed that mint extracts and/or their phenolic constituents have a neuroprotective potential and can target multiple events of AD. In this review, we provide evidence of the potential role of mint extracts and their derivatives as possible sources of treatments in managing AD. Some of the molecular pathways implicated in the development of AD are reviewed, with focus on apoptosis and some redox pathways, pointing to mechanisms that may be modulated for the treatment of AD, and the need for future research invoking knowledge of these pathways is highlighted.

Sign in / Sign up

Export Citation Format

Share Document