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Cobilinschi C, Andrei CA, Grinţescu IM, Mirea L. Metabolic failure due to thiamine deficiency during critical illness. Curr Opin Clin Nutr Metab Care 2024; 27:155-162. [PMID: 38205831 DOI: 10.1097/mco.0000000000001017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/12/2024]
Abstract
PURPOSE OF REVIEW Thiamine is a crucial component in cellular energy metabolism, serving as a cofactor for multiple enzymatic processes and also having a role in regulating neuronal and neuromuscular transmission. Also it exerts antioxidant proprieties. The objective of this review is to consolidate and assess the most recent research concerning the consequences of insufficient thiamine levels for critically ill patients and to examine thiamine-related interventions. RECENT FINDINGS Recent studies have unveiled a noteworthy association between thiamine deficiency and unfavorable consequences, such as heightened morbidity and fatality rates. The aforementioned deficiency exhibits a significant presence in medical situations such as starvation and alcohol use disorder, but also in patients during critical illness. Thiamine deficiency can have significant metabolic implications resulting in compromised energy generation and organ dysfunction, warranting prompt recognition and management. SUMMARY Thiamine deficiency may not be recognized in critical care. Timely identification and management are imperative to mitigate adverse outcomes and improve patient prognosis. Thiamine may offer benefits for specific patient groups at higher risk of deficiency. Future studies should focus to establish optimal dosing, timing, and monitoring strategies on understanding the pathophysiological changes associated with thiamine deficiency in ICU patients and clarify its role in improving clinical outcomes.
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Affiliation(s)
- Cristian Cobilinschi
- Department of Anesthesiology and Intensive Care, Clinical Emergency Hospital Bucharest
- Department of Anesthesiology and Intensive Care II, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania
| | - Cosmin-Andrei Andrei
- Department of Anesthesiology and Intensive Care, Clinical Emergency Hospital Bucharest
- Department of Anesthesiology and Intensive Care II, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania
| | - Ioana Marina Grinţescu
- Department of Anesthesiology and Intensive Care, Clinical Emergency Hospital Bucharest
- Department of Anesthesiology and Intensive Care II, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania
| | - Liliana Mirea
- Department of Anesthesiology and Intensive Care, Clinical Emergency Hospital Bucharest
- Department of Anesthesiology and Intensive Care II, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania
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Agarwal A, Basmaji J, Fernando SM, Ge FZ, Xiao Y, Faisal H, Honarmand K, Hylands M, Lau V, Lewis K, Couban R, Lamontagne F, Adhikari NKJ. Parenteral Vitamin C in Patients with Severe Infection: A Systematic Review. NEJM EVIDENCE 2022; 1:EVIDoa2200105. [PMID: 38319815 DOI: 10.1056/evidoa2200105] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
BACKGROUND: Inflammation and oxidative damage caused by severe infections may be attenuated by vitamin C. METHODS: We conducted a systematic review of randomized controlled trials (RCTs) of parenteral vitamin C as combined therapy or monotherapy versus no parenteral vitamin C administered to adults hospitalized with severe infection. The primary outcome was mortality. We performed random-effects meta-analyses and assessed certainty in effect estimates. RESULTS: Of 1547 citations, 41 RCTs (n = 4915 patients) were eligible for inclusion. Low-certainty evidence suggested that vitamin C may reduce in-hospital mortality (21 RCTs, 2762 patients; risk ratio, 0.88 [95% confidence interval (CI), 0.73 to 1.06]), 30-day mortality (24 RCTs, 3436 patients; risk ratio, 0.83 [95% CI, 0.71 to 0.98]), and early mortality (before hospital discharge or 30 days; 34 RCTs, 4366 patients; risk ratio, 0.80 [95% CI, 0.68 to 0.93]). Effects were attenuated in sensitivity analyses limited to published blinded trials at low risk-of-bias (in-hospital mortality: risk ratio, 1.07 [95% CI, 0.92 to 1.24], moderate certainty; 30-day mortality: risk ratio, 0.88 [95% CI, 0.71 to 1.10], low certainty; and early mortality: risk ratio, 0.88 [95% CI, 0.73 to 1.06], low certainty). For 90-day mortality, all trials had low risk-of-bias; moderate-certainty evidence suggested harm (five RCTs, 1722 patients; risk ratio, 1.07 [95% CI, 0.94 to 1.21]). Moderate-certainty evidence suggested an increased risk of hypoglycemia (risk ratio, 1.20 [95% CI, 0.69 to 2.08]). Effects on other secondary outcomes were mixed and informed by low-certainty evidence. No credible subgroup effects were observed for mortality related to cointerventions (monotherapy vs. combined therapy), dose, or type of infection (Covid-19 vs. other). CONCLUSIONS: Overall, evidence from RCTs does not establish a survival benefit for vitamin C in patients with severe infection. (PROSPERO number, CRD42020209187.)
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Affiliation(s)
- Arnav Agarwal
- Department of Critical Care Medicine, Sunnybrook Health Sciences Centre, Toronto
- Department of Medicine, Université de Sherbrooke, Sherbrooke, Canada
| | - John Basmaji
- Division of Critical Care, Department of Medicine, Schulich School of Medicine and Dentistry, Western University, London, Ontario, Canada
| | - Shannon M Fernando
- Division of Critical Care, Department of Medicine, University of Ottawa, Ottawa
- Department of Emergency Medicine, University of Ottawa, Ottawa
| | - Fang Zhou Ge
- Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Yingqi Xiao
- Department of Nursing, West China School of Nursing, West China Hospital, Sichuan University, Chengdu, Sichuan, China
- Department of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, Ontario, Canada
| | - Haseeb Faisal
- Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Kimia Honarmand
- Division of Critical Care, Department of Medicine, Schulich School of Medicine and Dentistry, Western University, London, Ontario, Canada
| | - Mathieu Hylands
- Department of Critical Care Medicine, Sunnybrook Health Sciences Centre, Toronto
| | - Vincent Lau
- Department of Critical Care, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada
| | - Kimberley Lewis
- Department of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, Ontario, Canada
- Department of Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Rachel Couban
- Department of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, Ontario, Canada
| | - François Lamontagne
- Department of Medicine, Université de Sherbrooke, Sherbrooke, Canada
- Centre de recherche du CHU de Sherbrooke, Sherbrooke, Canada
| | - Neill K J Adhikari
- Department of Critical Care Medicine, Sunnybrook Health Sciences Centre, Toronto
- Interdepartmental Division of Critical Care Medicine, Institute for Health Policy, Management, and Evaluation, University of Toronto, Toronto
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Costa NA, Pereira AG, Sugizaki CSA, Vieira NM, Garcia LR, de Paiva SAR, Zornoff LAM, Azevedo PS, Polegato BF, Minicucci MF. Insights Into Thiamine Supplementation in Patients With Septic Shock. Front Med (Lausanne) 2022; 8:805199. [PMID: 35155482 PMCID: PMC8832096 DOI: 10.3389/fmed.2021.805199] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2021] [Accepted: 12/31/2021] [Indexed: 11/13/2022] Open
Abstract
Septic shock is associated with unacceptably high mortality rates, mainly in developing countries. New adjunctive therapies have been explored to reduce global mortality related to sepsis. Considering that metabolic changes, mitochondrial dysfunction and increased oxidative stress are specific disorders within the path of septic shock, several micronutrients that could act in cellular homeostasis have been studied in recent decades. Thiamine, also known as vitamin B1, plays critical roles in several biological processes, including the metabolism of glucose, synthesis of nucleic acids and reduction of oxidative stress. Thiamine deficiency could affect up to 70% of critically ill patients, and thiamine supplementation appears to increase lactate clearance and decrease the vasopressor dose. However, there is no evident improvement in the survival of septic patients. Other micronutrients such as vitamin C and D, selenium and zinc have been tested in the same context but have not been shown to improve the outcomes of these patients. Some problems related to the neutrality of these clinical trials are the study design, doses, route, timing, length of intervention and the choice of endpoints. Recently, the concept that multi-micronutrient administration may be better than single-micronutrient administration has gained strength. In general, clinical trials consider the administration of a single micronutrient as a drug. However, the antioxidant defense is a complex system of endogenous agents in which micronutrients act as cofactors, and the physiological interactions between micronutrients are little discussed. In this context, the association of thiamine, vitamin C and corticoids was tested as an adjunctive therapy in septic shock resulting in a significant decrease in mortality. However, after these initial results, no other study conducted with this combination could reproduce those benefits. In addition, the use of low-dose corticosteroids is recommended in patients with septic shock who do not respond to vasopressors, which can affect the action of thiamine. Therefore, given the excellent safety profile, good biologic rationale and promising clinical studies, this review aims to discuss the mechanisms behind and the evidence for single or combined thiamine supplementation improving the prognosis of patients with septic shock.
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Affiliation(s)
- Nara Aline Costa
- Faculty of Nutrition, Universidade Federal de Goiás (UFG), Goiânia, Brazil
| | - Amanda Gomes Pereira
- Department of Internal Medicine, Botucatu Medical School, São Paulo State University (UNESP), Botucatu, Brazil
| | | | - Nayane Maria Vieira
- Department of Internal Medicine, Botucatu Medical School, São Paulo State University (UNESP), Botucatu, Brazil
| | - Leonardo Rufino Garcia
- Department of Internal Medicine, Botucatu Medical School, São Paulo State University (UNESP), Botucatu, Brazil
| | | | | | - Paula Schmidt Azevedo
- Department of Internal Medicine, Botucatu Medical School, São Paulo State University (UNESP), Botucatu, Brazil
| | - Bertha Furlan Polegato
- Department of Internal Medicine, Botucatu Medical School, São Paulo State University (UNESP), Botucatu, Brazil
| | - Marcos Ferreira Minicucci
- Department of Internal Medicine, Botucatu Medical School, São Paulo State University (UNESP), Botucatu, Brazil
- *Correspondence: Marcos Ferreira Minicucci
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