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Guo S, Jiang M, Wang W, Chen X, Wei Q, Wang M. Crystal structure of methyltransferase CbiL from Akkermansia muciniphila. Biochem Biophys Res Commun 2024; 722:150165. [PMID: 38805786 DOI: 10.1016/j.bbrc.2024.150165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2024] [Accepted: 05/22/2024] [Indexed: 05/30/2024]
Abstract
Akkermansia muciniphila is a mucin-degrading probiotic that colonizes the gastrointestinal tract. Genomic analysis identified a set of genes involved in the biosynthesis of corrin ring, including the cobalt factor II methyltransferase CbiL, in some phylogroups of A. muciniphila, implying a potential capacity for de novo synthesis of cobalamin. In this work, we determined the crystal structure of CbiL from A. muciniphila at 2.3 Å resolution. AmCbiL exists as a dimer both in solution and in crystal, and each protomer consists of two α/β domains, the N-terminal domain and the C-terminal domain, consistent with the folding of typical class III MTases. The two domains create an open trough, potentially available to bind the substrates SAM and cobalt factor II. Sequence and structural comparisons with other CbiLs, assisted by computer modeling, suggest that AmCbiL should have cobalt factor II C-20 methyltransferase activity. Our results support that certain strains of A. muciniphila may be capable of synthesizing cobalamin de novo.
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Affiliation(s)
- Shuoxuan Guo
- Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, Anhui, China; School of Life Sciences, Anhui University, Hefei 230601, Anhui, China
| | - Meiyu Jiang
- Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, Anhui, China; School of Life Sciences, Anhui University, Hefei 230601, Anhui, China
| | - Wenfeng Wang
- Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, Anhui, China; School of Life Sciences, Anhui University, Hefei 230601, Anhui, China
| | - Xi Chen
- Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, Anhui, China; School of Life Sciences, Anhui University, Hefei 230601, Anhui, China
| | - Qinghao Wei
- Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, Anhui, China; School of Life Sciences, Anhui University, Hefei 230601, Anhui, China
| | - Mingzhu Wang
- Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, Anhui, China; School of Life Sciences, Anhui University, Hefei 230601, Anhui, China; Key Laboratory of Human Microenvironment and Precision Medicine of Anhui Higher Education Institutes, Anhui University, Hefei 230601, Anhui, China.
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De la Cruz-Góngora V, Palazuelos-González R, Domínguez-Flores O. Micronutrient Deficiencies in Older Adults in Latin-America: A Narrative Review. Food Nutr Bull 2023:3795721231214587. [PMID: 38146136 DOI: 10.1177/03795721231214587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2023]
Abstract
BACKGROUND The population in Latin America and Caribbean (LAC) has experienced a major demographic transition with increased numbers of older adults (OA). This change brings opportunities in the public health sector to implement health prevention interventions and delay the onset of geriatric syndromes. Micronutrients play an important role in the maintenance of biological function which contributes to longevity. Micronutrient deficiencies (MD) in OA increase the risk for onset of chronic comorbidities and geriatric syndromes. AIM To review and summarize the existing data on micronutrient status in OA in the LAC region and discuss the gaps and challenges in public health approaches to address deficiencies. METHODS Literature review in Medline for records describing nutritional biomarkers in older adults (≥ 60y) from community dwelling and population-based studies in LAC. RESULTS Few countries (including Chile, Ecuador, Costa Rica, Brazil, and Mexico) have documented one or more nutritional deficiencies for OA in national health surveys, however across the entire region, evidence of micronutrient levels is scarce. Some surveys have documented a high prevalence and large heterogeneity in the prevalence of vitamin D followed by B12 deficiency, being the 2 MDs most studied due their effects on cognition, frailty, and bone mineral density in the OA population. Other MD including C, E, A, copper, zinc, iron, and selenium have also been reported. CONCLUSION Information on the micronutrient status in OA from LAC is poorly documented. Research and capacity building initiatives in the region are crucial to develop tailored strategies that address the specific nutritional needs and challenges faced by the ageing population in Latin-America.
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Affiliation(s)
- Vanessa De la Cruz-Góngora
- Center for Evaluation and Survey Research, National Institute of Public Health, Cuernavaca, Morelos, Mexico
- Global Brain Health Institute, Trinity College, Dublin, Ireland
| | | | - Omar Domínguez-Flores
- Center for Nutrition and Health Research, National Institute of Public Health, Cuernavaca, Morelos, Mexico
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Kobylarz D, Noga M, Frydrych A, Milan J, Morawiec A, Glaca A, Kucab E, Jastrzębska J, Jabłońska K, Łuc K, Zdeb G, Pasierb J, Toporowska-Kaźmierak J, Półchłopek S, Słoma P, Adamik M, Banasik M, Bartoszek M, Adamczyk A, Rędziniak P, Frączkiewicz P, Orczyk M, Orzechowska M, Tajchman P, Dziuba K, Pelczar R, Zima S, Nyankovska Y, Sowińska M, Pempuś W, Kubacka M, Popielska J, Brzezicki P, Jurowski K. Antidotes in Clinical Toxicology-Critical Review. TOXICS 2023; 11:723. [PMID: 37755734 PMCID: PMC10534475 DOI: 10.3390/toxics11090723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 08/11/2023] [Accepted: 08/20/2023] [Indexed: 09/28/2023]
Abstract
Poisoning and overdose are very important aspects in medicine and toxicology. Chemical weapons pose a threat to civilians, and emergency medicine principles must be followed when dealing with patients who have been poisoned or overdosed. Antidotes have been used for centuries and modern research has led to the development of new antidotes that can accelerate the elimination of toxins from the body. Although some antidotes have become less relevant due to modern intensive care techniques, they can still save lives or reduce the severity of toxicity. The availability of antidotes is crucial, especially in developing countries where intensive care facilities may be limited. This article aims to provide information on specific antidotes, their recommended uses, and potential risks and new uses. In the case of poisoning, supportive therapies are most often used; however, in many cases, the administration of an appropriate antidote saves the patient's life. In this review, we reviewed the literature on selected antidotes used in the treatment of poisonings. We also characterised the antidotes (bio)chemically. We described the cases in which they are used together with the dosage recommendations. We also analysed the mechanisms of action. In addition, we described alternative methods of using a given substance as a drug, an example of which is N-acetylcysteine, which can be used in the treatment of COVID-19. This article was written as part of the implementation of the project of the Polish Ministry of Education and Science, "Toxicovigilance, poisoning prevention, and first aid in poisoning with xenobiotics of current clinical importance in Poland", grant number SKN/SP/570184/2023.
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Affiliation(s)
- Damian Kobylarz
- Department of Regulatory and Forensic Toxicology, Institute of Medical Expertises, Łódź, ul. Aleksandrowska 67/93, 91-205 Łódź, Poland
| | - Maciej Noga
- Department of Regulatory and Forensic Toxicology, Institute of Medical Expertises, Łódź, ul. Aleksandrowska 67/93, 91-205 Łódź, Poland
| | - Adrian Frydrych
- Laboratory of Innovative Toxicological Research and Analyzes, Institute of Medical Studies, Medical College, Rzeszów University, Al. mjr. W. Kopisto 2a, 35-959 Rzeszów, Poland
| | - Justyna Milan
- Laboratory of Innovative Toxicological Research and Analyzes, Institute of Medical Studies, Medical College, Rzeszów University, Al. mjr. W. Kopisto 2a, 35-959 Rzeszów, Poland
| | - Adrian Morawiec
- Toxicological Science Club ‘Paracelsus’, Institute of Medical Studies, Medical College, Rzeszów University, Al. mjr. W. Kopisto 2a, 35-959 Rzeszów, Poland (E.K.); (G.Z.); (M.B.); (M.O.)
| | - Agata Glaca
- Toxicological Science Club ‘Paracelsus’, Institute of Medical Studies, Medical College, Rzeszów University, Al. mjr. W. Kopisto 2a, 35-959 Rzeszów, Poland (E.K.); (G.Z.); (M.B.); (M.O.)
| | - Emilia Kucab
- Toxicological Science Club ‘Paracelsus’, Institute of Medical Studies, Medical College, Rzeszów University, Al. mjr. W. Kopisto 2a, 35-959 Rzeszów, Poland (E.K.); (G.Z.); (M.B.); (M.O.)
| | - Julia Jastrzębska
- Toxicological Science Club ‘Paracelsus’, Institute of Medical Studies, Medical College, Rzeszów University, Al. mjr. W. Kopisto 2a, 35-959 Rzeszów, Poland (E.K.); (G.Z.); (M.B.); (M.O.)
| | - Karolina Jabłońska
- Toxicological Science Club ‘Paracelsus’, Institute of Medical Studies, Medical College, Rzeszów University, Al. mjr. W. Kopisto 2a, 35-959 Rzeszów, Poland (E.K.); (G.Z.); (M.B.); (M.O.)
| | - Klaudia Łuc
- Toxicological Science Club ‘Paracelsus’, Institute of Medical Studies, Medical College, Rzeszów University, Al. mjr. W. Kopisto 2a, 35-959 Rzeszów, Poland (E.K.); (G.Z.); (M.B.); (M.O.)
| | - Gabriela Zdeb
- Toxicological Science Club ‘Paracelsus’, Institute of Medical Studies, Medical College, Rzeszów University, Al. mjr. W. Kopisto 2a, 35-959 Rzeszów, Poland (E.K.); (G.Z.); (M.B.); (M.O.)
| | - Jakub Pasierb
- Toxicological Science Club ‘Paracelsus’, Institute of Medical Studies, Medical College, Rzeszów University, Al. mjr. W. Kopisto 2a, 35-959 Rzeszów, Poland (E.K.); (G.Z.); (M.B.); (M.O.)
| | - Joanna Toporowska-Kaźmierak
- Toxicological Science Club ‘Paracelsus’, Institute of Medical Studies, Medical College, Rzeszów University, Al. mjr. W. Kopisto 2a, 35-959 Rzeszów, Poland (E.K.); (G.Z.); (M.B.); (M.O.)
| | - Szczepan Półchłopek
- Toxicological Science Club ‘Paracelsus’, Institute of Medical Studies, Medical College, Rzeszów University, Al. mjr. W. Kopisto 2a, 35-959 Rzeszów, Poland (E.K.); (G.Z.); (M.B.); (M.O.)
| | - Paweł Słoma
- Toxicological Science Club ‘Paracelsus’, Institute of Medical Studies, Medical College, Rzeszów University, Al. mjr. W. Kopisto 2a, 35-959 Rzeszów, Poland (E.K.); (G.Z.); (M.B.); (M.O.)
| | - Magdalena Adamik
- Toxicological Science Club ‘Paracelsus’, Institute of Medical Studies, Medical College, Rzeszów University, Al. mjr. W. Kopisto 2a, 35-959 Rzeszów, Poland (E.K.); (G.Z.); (M.B.); (M.O.)
| | - Mateusz Banasik
- Toxicological Science Club ‘Paracelsus’, Institute of Medical Studies, Medical College, Rzeszów University, Al. mjr. W. Kopisto 2a, 35-959 Rzeszów, Poland (E.K.); (G.Z.); (M.B.); (M.O.)
| | - Mateusz Bartoszek
- Toxicological Science Club ‘Paracelsus’, Institute of Medical Studies, Medical College, Rzeszów University, Al. mjr. W. Kopisto 2a, 35-959 Rzeszów, Poland (E.K.); (G.Z.); (M.B.); (M.O.)
| | - Aleksandra Adamczyk
- Toxicological Science Club ‘Paracelsus’, Institute of Medical Studies, Medical College, Rzeszów University, Al. mjr. W. Kopisto 2a, 35-959 Rzeszów, Poland (E.K.); (G.Z.); (M.B.); (M.O.)
| | - Patrycja Rędziniak
- Toxicological Science Club ‘Paracelsus’, Institute of Medical Studies, Medical College, Rzeszów University, Al. mjr. W. Kopisto 2a, 35-959 Rzeszów, Poland (E.K.); (G.Z.); (M.B.); (M.O.)
| | - Paulina Frączkiewicz
- Toxicological Science Club ‘Paracelsus’, Institute of Medical Studies, Medical College, Rzeszów University, Al. mjr. W. Kopisto 2a, 35-959 Rzeszów, Poland (E.K.); (G.Z.); (M.B.); (M.O.)
| | - Michał Orczyk
- Toxicological Science Club ‘Paracelsus’, Institute of Medical Studies, Medical College, Rzeszów University, Al. mjr. W. Kopisto 2a, 35-959 Rzeszów, Poland (E.K.); (G.Z.); (M.B.); (M.O.)
| | - Martyna Orzechowska
- Toxicological Science Club ‘Paracelsus’, Institute of Medical Studies, Medical College, Rzeszów University, Al. mjr. W. Kopisto 2a, 35-959 Rzeszów, Poland (E.K.); (G.Z.); (M.B.); (M.O.)
| | - Paulina Tajchman
- Toxicological Science Club ‘Paracelsus’, Institute of Medical Studies, Medical College, Rzeszów University, Al. mjr. W. Kopisto 2a, 35-959 Rzeszów, Poland (E.K.); (G.Z.); (M.B.); (M.O.)
| | - Klaudia Dziuba
- Toxicological Science Club ‘Paracelsus’, Institute of Medical Studies, Medical College, Rzeszów University, Al. mjr. W. Kopisto 2a, 35-959 Rzeszów, Poland (E.K.); (G.Z.); (M.B.); (M.O.)
| | - Rafał Pelczar
- Toxicological Science Club ‘Paracelsus’, Institute of Medical Studies, Medical College, Rzeszów University, Al. mjr. W. Kopisto 2a, 35-959 Rzeszów, Poland (E.K.); (G.Z.); (M.B.); (M.O.)
| | - Sabina Zima
- Toxicological Science Club ‘Paracelsus’, Institute of Medical Studies, Medical College, Rzeszów University, Al. mjr. W. Kopisto 2a, 35-959 Rzeszów, Poland (E.K.); (G.Z.); (M.B.); (M.O.)
| | - Yana Nyankovska
- Toxicological Science Club ‘Paracelsus’, Institute of Medical Studies, Medical College, Rzeszów University, Al. mjr. W. Kopisto 2a, 35-959 Rzeszów, Poland (E.K.); (G.Z.); (M.B.); (M.O.)
| | - Marta Sowińska
- Toxicological Science Club ‘Paracelsus’, Institute of Medical Studies, Medical College, Rzeszów University, Al. mjr. W. Kopisto 2a, 35-959 Rzeszów, Poland (E.K.); (G.Z.); (M.B.); (M.O.)
| | - Wiktoria Pempuś
- Toxicological Science Club ‘Paracelsus’, Institute of Medical Studies, Medical College, Rzeszów University, Al. mjr. W. Kopisto 2a, 35-959 Rzeszów, Poland (E.K.); (G.Z.); (M.B.); (M.O.)
| | - Maria Kubacka
- Toxicological Science Club ‘Paracelsus’, Institute of Medical Studies, Medical College, Rzeszów University, Al. mjr. W. Kopisto 2a, 35-959 Rzeszów, Poland (E.K.); (G.Z.); (M.B.); (M.O.)
| | - Julia Popielska
- Toxicological Science Club ‘Paracelsus’, Institute of Medical Studies, Medical College, Rzeszów University, Al. mjr. W. Kopisto 2a, 35-959 Rzeszów, Poland (E.K.); (G.Z.); (M.B.); (M.O.)
| | - Patryk Brzezicki
- Toxicological Science Club ‘Paracelsus’, Institute of Medical Studies, Medical College, Rzeszów University, Al. mjr. W. Kopisto 2a, 35-959 Rzeszów, Poland (E.K.); (G.Z.); (M.B.); (M.O.)
| | - Kamil Jurowski
- Department of Regulatory and Forensic Toxicology, Institute of Medical Expertises, Łódź, ul. Aleksandrowska 67/93, 91-205 Łódź, Poland
- Laboratory of Innovative Toxicological Research and Analyzes, Institute of Medical Studies, Medical College, Rzeszów University, Al. mjr. W. Kopisto 2a, 35-959 Rzeszów, Poland
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Ahlskog JE. Levodopa, homocysteine and Parkinson's disease: What's the problem? Parkinsonism Relat Disord 2023; 109:105357. [PMID: 36922273 DOI: 10.1016/j.parkreldis.2023.105357] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 02/28/2023] [Accepted: 03/04/2023] [Indexed: 03/08/2023]
Abstract
Elevated circulating homocysteine levels have been associated with cognitive impairment and cardio-cerebro-vascular events. Levodopa treatment of Parkinson's disease tends to further elevate circulating homocysteine levels due to the metabolism of levodopa via catechol-O-methyltransferase (COMT). COMT co-factors are vitamins B12, B6 and folic acid. Accumulating deficiencies of these vitamins are presumed to be the substrate for the homocysteine elevation. B-vitamin therapy reduces homocysteine levels. This begs the question of whether Parkinson's disease patients on levodopa should be concurrently treated with ongoing B-vitamin therapy (versus long-term monitoring of B-vitamins/homocysteine). There is a substantial literature on this topic that has accumulated over the last quarter-century, and this topic is still debated. This review summarizes the relevant literature with the aim of approximating closure on this issue. Also, noteworthy is that Parkinson's disease patients with renal insufficiency may not tolerate cyanocobalamin, the standard oral B12 supplement due to facilitation of renal decline; alternatives are discussed.
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Affiliation(s)
- J Eric Ahlskog
- Department of Neurology, Mayo Clinic, Rochester, MN, 55905, USA.
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Karakousis ND, Pyrgioti EE, Georgakopoulos PN, Papanas N. Vitamin B 12 and Diabetic Foot: Α Mini-Review. INT J LOW EXTR WOUND 2022:15347346221143018. [PMID: 36448193 DOI: 10.1177/15347346221143018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2024]
Abstract
This narrative mini-review article aimed to investigate the potential association of vitamin B12 levels with diabetic neuropathy (DN) and diabetic foot ulcers (DFUs). It was demonstrated that B12 deficiency seems to be related to DFUs in cases of metformin administration and bariatric surgery. B12 supplementation with dietary measures and agents may improve DN and quality of life (QoL). However, data are still preliminary and more experience is needed.
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Affiliation(s)
| | | | | | - Nikolaos Papanas
- Second Department of Internal Medicine, Diabetes Centre-Diabetic Foot Clinic, Democritus University of Thrace, Alexandroupolis, Greece
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6
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Vitamin B12 Supplementation Adequacy in Australian Vegan Study Participants. Nutrients 2022; 14:nu14224781. [PMID: 36432466 PMCID: PMC9695216 DOI: 10.3390/nu14224781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Revised: 11/06/2022] [Accepted: 11/09/2022] [Indexed: 11/16/2022] Open
Abstract
In our initial analysis of the Australian Vegan Study we estimated the mean daily intake of vitamin B12 of each participant and compared this to the Recommended Dietary Intake (RDI). However, the proportion of vitamin B12 that can be absorbed from large doses typically contained in oral supplements is considerably lower than the amount absorbed from food. In this analysis we took into account the estimated absorption from supplements in order to compare adequacy of vitamin B12 intake to the RDI. A cross-sectional online survey was used to obtain information from women (N = 1530) of reproductive age on a vegan diet in Australia. Vitamin B12 intake from food was estimated using a validated food frequency questionnaire and detailed questioning was used to estimate supplemental intake. We used published data on dose-dependent absorption rates to estimate amount of the vitamin absorbed to enable comparison to the RDI. Supplementation practices varied widely. Based on estimated amount absorbed, 39% of participants had an estimated total intake of vitamin B12 below RDI equivalency, compared to 26% based on mean daily intake. The potential absorption of vitamin B12 needs to be considered when estimating adequacy of intake and recommending supplementation.
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Chandra J, Dewan P, Kumar P, Mahajan A, Singh P, Dhingra B, Radhakrishnan N, Sharma R, Manglani M, Rawat AK, Gupta P, Gomber S, Bhat S, Gaikwad P, Elizabeth KE, Bansal D, Dubey AP, Shah N, Kini P, Trehan A, Datta K, Basavraja GV, Saxena V, Kumar RR. Diagnosis, Treatment and Prevention of Nutritional Anemia in Children: Recommendations of the Joint Committee of Pediatric Hematology-Oncology Chapter and Pediatric and Adolescent Nutrition Society of the Indian Academy of Pediatrics. Indian Pediatr 2022. [DOI: 10.1007/s13312-022-2622-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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8
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Lee CW, Jin JS, Kwon S, Jin C, Cho SY, Park SU, Jung WS, Moon SK, Park JM, Ko CN, Cho KH. Are herbal medicines alone or in combination for diabetic peripheral neuropathy more effective than methylcobalamin alone? A systematic review and meta-analysis. Complement Ther Clin Pract 2022; 49:101657. [PMID: 36007447 DOI: 10.1016/j.ctcp.2022.101657] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Revised: 08/08/2022] [Accepted: 08/08/2022] [Indexed: 11/25/2022]
Abstract
BACKGROUND AND PURPOSE In Asian countries, herbal medicines have been used to treat diabetic peripheral neuropathy (DPN) as an adjunctive therapy. This review aims to assess the effectiveness and safety of herbal medicines for the treatment of DPN. METHODS A literature search was conducted on PubMed, Embase, CENTRAL, Scopus, CINAHL, CNKI, DBPIA, and OASIS for randomized controlled trials that evaluated the effects of herbal medicines on DPN. The oral methylcobalamin administered group was selected as the control. The primary outcome measure was nerve conduction velocity (NCV), and the secondary outcome measure was the total efficacy rate (TER). The methodological quality of the included studies was assessed using the Cochrane risk of bias tool. A meta-analysis was conducted using Review Manager 5.4.1 software. RESULTS Seventy-two RCTs with a total of 6260 patients were included. The meta-analysis showed that herbal medicine and co-administration of herbal medicine and methylcobalamin (CHM) treatment for DPN significantly increased the sensory nerve conduction velocity (SNCV) and motor nerve conduction velocity (MNCV) of the median and common peroneal nerves than methylcobalamin treatment alone. Herbal medicine and CHM treatment for DPN also significantly improved the TER compared to the control group. Herbal medicine and CHM treatment was found to be relatively safe. CONCLUSION Our study suggests that herbal medicine and CHM might be more effective than methylcobalamin alone in the management of DPN. Further rigorous studies should be conducted to make more definite conclusions.
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Affiliation(s)
- Chang-Woo Lee
- Department of Korean Medicine Cardiology and Neurology, Graduate School, Kyung Hee University, Seoul, Republic of Korea
| | - Joon-Soo Jin
- Department of Korean Medicine Cardiology and Neurology, Graduate School, Kyung Hee University, Seoul, Republic of Korea
| | - Seungwon Kwon
- Department of Cardiology and Neurology, College of Korean Medicine, Kyung Hee University, Seoul, Republic of Korea.
| | - Chul Jin
- Department of Korean Medicine Cardiology and Neurology, Graduate School, Kyung Hee University, Seoul, Republic of Korea
| | - Seung-Yeon Cho
- Department of Cardiology and Neurology, College of Korean Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Seong-Uk Park
- Department of Cardiology and Neurology, College of Korean Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Woo-Sang Jung
- Department of Cardiology and Neurology, College of Korean Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Sang-Kwan Moon
- Department of Cardiology and Neurology, College of Korean Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Jung-Mi Park
- Department of Cardiology and Neurology, College of Korean Medicine, Kyung Hee University, Seoul, Republic of Korea.
| | - Chang-Nam Ko
- Department of Cardiology and Neurology, College of Korean Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Ki-Ho Cho
- Department of Cardiology and Neurology, College of Korean Medicine, Kyung Hee University, Seoul, Republic of Korea
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Vitamin B12 Reduces TDP-43 Toxicity by Alleviating Oxidative Stress and Mitochondrial Dysfunction. Antioxidants (Basel) 2021; 11:antiox11010082. [PMID: 35052586 PMCID: PMC8773243 DOI: 10.3390/antiox11010082] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Revised: 12/23/2021] [Accepted: 12/26/2021] [Indexed: 01/20/2023] Open
Abstract
TAR DNA-binding protein 43 (TDP-43) is a member of an evolutionarily conserved family of heterogeneous nuclear ribonucleoproteins that modulate multiple steps in RNA metabolic processes. Cytoplasmic aggregation of TDP-43 in affected neurons is a pathological hallmark of many neurodegenerative diseases, including amyotrophic lateral sclerosis (ALS), frontotemporal dementia (FTD), Alzheimer’s disease (AD), and limbic predominant age-related TDP-43 encephalopathy (LATE). Mislocalized and accumulated TDP-43 in the cytoplasm induces mitochondrial dysfunction and reactive oxidative species (ROS) production. Here, we show that TDP-43- and rotenone-induced neurotoxicity in the human neuronal cell line SH-SY5Y were attenuated by hydroxocobalamin (Hb, vitamin B12 analog) treatment. Although Hb did not affect the cytoplasmic accumulation of TDP-43, Hb attenuated TDP-43-induced toxicity by reducing oxidative stress and mitochondrial dysfunction. Moreover, a shortened lifespan and motility defects in TDP-43-expressing Drosophila were significantly mitigated by dietary treatment with hydroxocobalamin. Taken together, these findings suggest that oral intake of hydroxocobalamin may be a potential therapeutic intervention for TDP-43-associated proteinopathies.
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Orhan Kiliç B, Kiliç S, Şahin Eroğlu E, Gül E, Belen Apak FB. Sublingual methylcobalamin treatment is as effective as intramuscular and peroral cyanocobalamin in children age 0-3 years. Hematology 2021; 26:1013-1017. [PMID: 34871525 DOI: 10.1080/16078454.2021.2010877] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
Abstract
PURPOSE Vitamin B12 deficiency is a cause of preventable growth and developmental retardation in children. In this respect, alternative methods such as oral and sublingual treatments are being tried. We aimed to compare the efficacy of oral, sublingual, and intramuscular vitamin B12 treatments in children aged 0-3 years. METHODS The study included 158 patients with serum vitamin B12 deficiency (serum vitamin B12 level <300 ng/L) aged 0-3 years retrospectively. According to the vitamin B12 treatment modalities, the patients were divided into three groups as oral cyanocobalamin (group 1), sublingual methylcobalamin (group 2), and intramuscular cyanocobalamin (group 3). RESULTS The mean values of vitamin B12 levels increased to above 300 ng/L in all three groups. This increase was statistically significant for Group 1,2 and 3 (p<0.05). CONCLUSION Sublingual methylcobalamin was determined as effective as oral and intramuscular cyanocobalamin improving vitamin B12 levels aged 0-3 years. What's already known about this topic?It is already known that intramuscular and oral cyanocobalamin treatments are effective in vitamin B12 deficiency of children.What does this article add?Sublingual methylcobalamin treatment, which is a new treatment method, was found to be as effective as oral and intramuscular cyanocobalamin treatments. To our knowledge, there is no study about sublingual treatment in children and comparing oral cyanocobalamin, intramuscular cyanocobalamin, sublingual methylcobalamin.
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Affiliation(s)
- Betül Orhan Kiliç
- Department of Pediatrics, Baskent University Faculty of Medicine, Ankara, Turkey
| | - Serhat Kiliç
- Department of Pediatrics, Baskent University Faculty of Medicine, Ankara, Turkey
| | - Elif Şahin Eroğlu
- Department of Pediatrics, Baskent University Faculty of Medicine, Ankara, Turkey
| | - Eylem Gül
- Department of Biostatistics, Baskent University Faculty of Medicine, Ankara, Turkey
| | - Fatma Burcu Belen Apak
- Department of Pediatric Hematology, Baskent University Faculty of Medicine, Ankara, Turkey
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11
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Mahgoub AE, Deliwala SS, Bachuwa G. Important reminder: nitrous oxide (N 2O) as a cause of functional vitamin B 12 deficiency. BMJ Case Rep 2021; 14:14/7/e241414. [PMID: 34290005 DOI: 10.1136/bcr-2020-241414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
A 32-year-old woman who misused multiple substances, including nitrous oxide (N2O), sought medical advice after she subacutely developed bilateral lower extremity weakness without a sensory level but with ataxia-her significant other developed similar symptoms with vitamin B12 deficiency due to N2O intake. Laboratory results revealed macrocytic anaemia despite normal B12 and folate levels, with serum markers pointing towards functional cobalamin deficiency. Spinal MRIs and cerebrospinal fluid analysis were unremarkable. Our patient was treated with vitamin B12 supplementation with an encouraging response.
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Affiliation(s)
| | | | - Ghassan Bachuwa
- Internal Medicine, Hurley Medical Center, Flint, Michigan, USA
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12
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Chen-Yang Z, An-Nan H, Yun-Qi J, Hui-Ren W, Xi-Lei L, Xiao-Gang Z, Hong L. The Clinical Effect of a Combination of Mouse Nerve Growth Factor and Methylcobalamin to Treat Lumbar Disc Herniation with Foot Drop: A Retrospective Cohort Study. Orthop Surg 2021; 13:1602-1608. [PMID: 34124841 PMCID: PMC8313174 DOI: 10.1111/os.13014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2020] [Revised: 03/13/2021] [Accepted: 03/16/2021] [Indexed: 12/25/2022] Open
Abstract
Objective To investigate the clinical effect of mouse nerve growth factor (mNGF) and methylcobalamin (MeCbl) for the treatment of lumbar disk herniation (LDH) with foot drop. Methods A total of 46 patients suffering from LDH with foot drop who underwent transforaminal lumbar interbody fusion (TLIF) surgery in our department from January 2015 to December 2017 were retrospectively analyzed. We divided these patients into two groups according to the different postoperative treatment which independently selected by patients after signing informed consent form: one group of 25 patients was treated with MeCbl alone (Group MeCbl), the other group of 21 patients was treated with a combination of mNGF and MeCbl (Group MeCbl+mNGF). Patient demographics, the visual analogue scale (VAS) scores, sensory and muscular strength improvement statistics at 1 week, 4 weeks, 12 weeks, and 12 months postoperatively were recorded. Motor/sensory deficits, sciatica and overall neurological outcome after treatment of MeCbl alone and combination of mNGF and MeCbl were retrospectively analyzed. Results The follow‐up ranged between 12 and 42 months (mean 20.8 months). There were no significant differences between these two groups of patients with respect to sex ratio, age, smoking, diabetes, disease course, section of protruding disc(s), muscular strength of foot dorsiflexion or preoperative visual analogue scale (VAS) score (P > 0.05). The VAS scores of Group MeCbl+mNGF were significantly lower than Group MeCbl at 1 week, 4 weeks, 12 weeks, and 12 months postoperatively (4.32 ± 0.75 vs 5.25 ± 0.79,2.65 ± 0.48 vs 3.42 ± 0.52, 1.72 ± 0.36 vs 2.45 ± 0.39, 1.12 ± 0.22 vs 1.52 ± 0.24, P < 0.05). The effective rates of sensory improvement were significantly higher in Group MeCbl+mNGF compared with Group MeCbl at 12‐week/12‐month follow‐up time point (90.48% vs 52.00%,95.24% vs 68.00%, P < 0.05). The effective rate of muscular strength improvement of the two groups did not differ significantly at 1 week after surgery but exhibited statistically significant differences at subsequent time points (61.90% vs 32.00%, 76.19% vs 44.00%, 80.95% vs 48.00%, P < 0.05). Conclusions Application of mNGF had clinical effects on promoting the recovery of neurological function in patients suffering from LDH with foot drop.
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Affiliation(s)
- Zhuang Chen-Yang
- Department of Orthopaedic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Hu An-Nan
- Department of Orthopaedic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Jiang Yun-Qi
- Department of Orthopaedic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Wang Hui-Ren
- Department of Orthopaedic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Li Xi-Lei
- Department of Orthopaedic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Zhou Xiao-Gang
- Department of Orthopaedic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Lin Hong
- Department of Orthopaedic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
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13
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Sobczyńska-Malefora A, Delvin E, McCaddon A, Ahmadi KR, Harrington DJ. Vitamin B 12 status in health and disease: a critical review. Diagnosis of deficiency and insufficiency - clinical and laboratory pitfalls. Crit Rev Clin Lab Sci 2021; 58:399-429. [PMID: 33881359 DOI: 10.1080/10408363.2021.1885339] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Vitamin B12 (cobalamin) is an essential cofactor for two metabolic pathways. It is obtained principally from food of animal origin. Cobalamin becomes bioavailable through a series of steps pertaining to its release from dietary protein, intrinsic factor-mediated absorption, haptocorrin or transcobalamin-mediated transport, cellular uptake, and two enzymatic conversions (via methionine synthase and methylmalonyl-CoA-mutase) into cofactor forms: methylcobalamin and adenosylcobalamin. Vitamin B12 deficiency can masquerade as a multitude of illnesses, presenting different perspectives from the point of view of the hematologist, neurologist, gastroenterologist, general physician, or dietician. Increased physician vigilance and heightened patient awareness often account for its early presentation, and testing sometimes occurs during a phase of vitamin B12 insufficiency before the main onset of the disease. The chosen test often depends on its availability rather than on the diagnostic performance and sensitivity to irrelevant factors interfering with vitamin B12 markers. Although serum B12 is still the most commonly used and widely available test, diagnostics by holotranscobalamin, serum methylmalonic acid, and plasma homocysteine measurements have grown in the last several years in routine practice. The lack of a robust absorption test, coupled with compromised sensitivity and specificity of other tests (intrinsic factor and gastric parietal cell antibodies), hinders determination of the cause for depleted B12 status. This can lead to incorrect supplementation regimes and uncertainty regarding later treatment. This review discusses currently available knowledge on vitamin B12, informs the reader about the pitfalls of tests for assessing its deficiency, reviews B12 status in various populations at different disease stages, and provides recommendations for interpretation, treatment, and associated risks. Future directions for diagnostics of B12 status and health interventions are also discussed.
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Affiliation(s)
- Agata Sobczyńska-Malefora
- The Nutristasis Unit, Viapath, St. Thomas' Hospital, London, UK.,Faculty of Life Sciences and Medicine, King's College London, London, UK
| | - Edgard Delvin
- Sainte-Justine UHC Research Centre, Montreal, Canada.,Department of Biochemistry and Molecular Medicine, University of Montreal, Montreal, Canada
| | | | - Kourosh R Ahmadi
- Department of Nutrition & Metabolism, School of Biosciences and Medicine, University of Surrey, Guildford, UK
| | - Dominic J Harrington
- The Nutristasis Unit, Viapath, St. Thomas' Hospital, London, UK.,Faculty of Life Sciences and Medicine, King's College London, London, UK
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14
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Gu L, Fu R, Chen P, Du N, Chen S, Mao D, Chen B, Mao F, Khadaroo PA, Jin Q. In Terms of Nutrition, the Most Suitable Method for Bariatric Surgery: Laparoscopic Sleeve Gastrectomy or Roux-en-Y Gastric Bypass? A Systematic Review and Meta-analysis. Obes Surg 2021; 30:2003-2014. [PMID: 32077060 DOI: 10.1007/s11695-020-04488-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
This study assesses the differences in postoperative nutritional status between laparoscopic sleeve gastrectomy (LSG) and laparoscopic Roux-en-Y gastric bypass (LRYGB). We searched the literature from PubMed, Web of Science, Embase, and the Cochrane Library database. Twenty-nine articles were included, with a total of 5437 obese patients. After bariatric surgery, the LSG group had less anemia and iron deficiency anemia than the LRYGB group. The serum iron, ferritin deficiency, and vitamin B12 rates after LSG were lower than patients receiving LRYGB. And PTH and serum phosphorus concentration of patients after LSG were both lower than those after LRYGB. The postoperative results of LSG were better than that of LRYGB. Therefore, we recommend LSG for a better postoperative nutrition, but only for reference.
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Affiliation(s)
- Lihu Gu
- Department of General Surgery, HwaMei Hospital, University of Chinese Academy of Sciences, Ningbo, Zhejiang, China
| | - Rongrong Fu
- The First Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China
| | - Ping Chen
- Department of General Surgery, HwaMei Hospital, University of Chinese Academy of Sciences, Ningbo, Zhejiang, China
| | - Nannan Du
- The Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China
| | - Siqi Chen
- The First Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China
| | - Danyi Mao
- Basic Medical College, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China
| | - Bangsheng Chen
- Emergency Medical Center, Ningbo Yinzhou No 2 Hospital, 998 North Qianhe Road, Yinzhou District, Ningbo, 315100, Zhejiang, China
| | - Feiyan Mao
- Department of General Surgery, HwaMei Hospital, University of Chinese Academy of Sciences, Ningbo, Zhejiang, China
| | | | - Qiong Jin
- Emergency Medical Center, Ningbo Yinzhou No 2 Hospital, 998 North Qianhe Road, Yinzhou District, Ningbo, 315100, Zhejiang, China.
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15
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Yang Y, Zhang S, Zhang X, Xu Y, Cheng J, Yang X. The Role of Diet, Eating Behavior, and Nutrition Intervention in Seasonal Affective Disorder: A Systematic Review. Front Psychol 2020; 11:1451. [PMID: 32903693 PMCID: PMC7438823 DOI: 10.3389/fpsyg.2020.01451] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Accepted: 05/29/2020] [Indexed: 12/22/2022] Open
Abstract
Background: Seasonal affective disorder (SAD) is a biological and mood disorder with a seasonal pattern. Dietary intervention and nutritional status have been reported to affect SAD severity. The objective of this study was to systematically review the evidence of associations between SAD and diet, eating behavior, and nutrition intervention. Methods: We performed a comprehensive search of MEDLINE, EMBASE, Web of Science, and Google Scholar from inception up to July 1, 2019. Studies that examined diet and eating behaviors in SAD patients and tests of nutrition interventions for SAD were included. Two independent investigators extracted data based on study designs, participants, outcomes, exposures, and association measures. Results: Eleven studies were included: six studies examined distinctive dietary patterns and eating behaviors in SAD patients and five studies explored the efficacy of nutrition interventions for SAD. Vegetarianism and alcoholism were associated with higher SAD prevalence, but normal alcohol intake was not correlated with SAD severity. Compared with non-clinical subjects, SAD patients tended to consume significantly larger dinners and more evening snacks during weekdays and weekends and exhibit a higher frequency of binge eating, external eating, and emotional eating. Additionally, compared to healthy controls, SAD patients presented more cravings for starch-rich food and food with high fiber. However, neither the ingestion of carbohydrate-loaded meals nor Vitamin D/B12 supplementation showed benefit for SAD. Conclusion: Studies suggest that SAD patients may exhibit distinctive diet preferences and eating behaviors, but no current nutrition intervention has demonstrated efficacy for ameliorating SAD symptoms. Further evidence is needed from randomized controlled trials with larger sample sizes and longer durations.
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Affiliation(s)
- Yongde Yang
- Affiliated Wuhan Mental Health Center, Tongji Medical College of Huazhong University of Science and Technology, Wuhan, China
| | - Sheng Zhang
- Affiliated Wuhan Mental Health Center, Tongji Medical College of Huazhong University of Science and Technology, Wuhan, China
| | - Xianping Zhang
- Affiliated Wuhan Mental Health Center, Tongji Medical College of Huazhong University of Science and Technology, Wuhan, China
| | - Yongjun Xu
- Wuhan East Body-Well Mental Hospital, Wuhan, China
| | - Junrui Cheng
- Friedman School of Nutrition and Policy, Tufts University, Boston, MA, United States
| | - Xue Yang
- Affiliated Wuhan Mental Health Center, Tongji Medical College of Huazhong University of Science and Technology, Wuhan, China
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16
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Sawangjit R, Thongphui S, Chaichompu W, Phumart P. Efficacy and Safety of Mecobalamin on Peripheral Neuropathy: A Systematic Review and Meta-Analysis of Randomized Controlled Trials. J Altern Complement Med 2020; 26:1117-1129. [PMID: 32716261 DOI: 10.1089/acm.2020.0068] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
Objectives: To assess the efficacy and safety of mecobalamin on peripheral neuropathy. Background: Mecobalamin is an active form of vitamin B12 that has been suggested to be beneficial in improving nerve conduction and neuropathic pain symptoms. Although it is already widely used in Asia for the treatment of peripheral neuropathies, its efficacy remains unclear. Methods: Relevant electronic databases were systematically searched for randomized controlled trials investigating the efficacy and safety of mecobalamin on peripheral neuropathy, from inception through December 2019. Study selection, data extraction, and quality assessment were performed independently by two reviewers. The clinical therapeutic efficacy, pain score, neuropathic symptom score, nerve conduction velocities (NCVs), and adverse events of mecobalamin were assessed and were pooled by using a random-effects model. Heterogeneity was assessed by I2 and chi-squared tests. Results: Fifteen studies with 1707 peripheral neuropathy patients caused by diabetic peripheral neuropathy and herpetic neuropathy were included. Based on Cochrane's risk of bias criteria, most of the included studies (11/15, 73%) were rated high risk of bias, whereas 20% and 7% were rated some concerns and low risk of bias, respectively. In terms of the proportion of patients achieving clinical therapeutic efficacy, mecobalamin alone (risk ratio [RR] = 1.17; 95% confidence interval [CI] 1.03-1.33) and mecobalamin in combination (RR = 1.32; 95% CI 1.21-1.45) are more effective than active control. For NCV outcomes, only mecobalamin combination treatment was effective. Neither mecobalamin alone nor mecobalamin in combination is effective on the pain score and neuropathic symptom outcomes. No serious adverse events associated with mecobalamin were reported during the treatment periods. Conclusion: Our findings indicate that mecobalamin in combination may be effective in improving clinical therapeutic efficacy and NCV outcomes for peripheral neuropathy patients, but the evidence is not clear for mecobalamin alone. More high-quality studies are required to confirm this finding.
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Affiliation(s)
- Ratree Sawangjit
- Clinical Trials and Evidence-Based Syntheses Research Unit (CTEBs RU), Department of Clinical Pharmacy, Faculty of Pharmacy, Mahasarakham University, Mahasarakham, Thailand
| | - Suntana Thongphui
- Clinical Trials and Evidence-Based Syntheses Research Unit (CTEBs RU), Department of Clinical Pharmacy, Faculty of Pharmacy, Mahasarakham University, Mahasarakham, Thailand
| | - Wanida Chaichompu
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Mahasarakham University, Mahasarakham, Thailand
| | - Panumart Phumart
- Clinical Trials and Evidence-Based Syntheses Research Unit (CTEBs RU), Department of Clinical Pharmacy, Faculty of Pharmacy, Mahasarakham University, Mahasarakham, Thailand
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17
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van de Lagemaat EE, de Groot LCPGM, van den Heuvel EGHM. Vitamin B 12 in Relation to Oxidative Stress: A Systematic Review. Nutrients 2019; 11:E482. [PMID: 30823595 PMCID: PMC6412369 DOI: 10.3390/nu11020482] [Citation(s) in RCA: 104] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Revised: 02/19/2019] [Accepted: 02/20/2019] [Indexed: 12/11/2022] Open
Abstract
The triage theory posits that modest micronutrient deficiencies may induce reallocation of nutrients to processes necessary for immediate survival at the expense of long-term health. Neglected processes could in time contribute to the onset of age-related diseases, in which oxidative stress is believed to be a major factor. Vitamin B12 (B12) appears to possess antioxidant properties. This review aims to summarise the potential antioxidant mechanisms of B12 and investigate B12 status in relation to oxidative stress markers. A systematic query-based search of PubMed was performed to identify eligible publications. The potential antioxidant properties of B12 include: (1) direct scavenging of reactive oxygen species (ROS), particularly superoxide; (2) indirect stimulation of ROS scavenging by preservation of glutathione; (3) modulation of cytokine and growth factor production to offer protection from immune response-induced oxidative stress; (4) reduction of homocysteine-induced oxidative stress; and (5) reduction of oxidative stress caused by advanced glycation end products. Some evidence appears to suggest that lower B12 status is related to increased pro-oxidant and decreased antioxidant status, both overall and for subclinically deficient individuals compared to those with normal B12 status. However, there is a lack of randomised controlled trials and prospective studies focusing specifically on the relation between B12 and oxidative stress in humans, resulting in a low strength of evidence. Further work is warranted.
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Affiliation(s)
- Erik E van de Lagemaat
- Division of Human Nutrition and Health, Wageningen University and Research, P.O. Box 17, 6700 AA Wageningen, The Netherlands.
- FrieslandCampina, Stationsplein 4, 3818 LE Amersfoort, The Netherlands.
| | - Lisette C P G M de Groot
- Division of Human Nutrition and Health, Wageningen University and Research, P.O. Box 17, 6700 AA Wageningen, The Netherlands.
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18
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Differences in Tissue Distribution of Cyano⁻B12 and Hydroxo⁻B12 One Week after Oral Intake: An Experimental Study in Male Wistar Rats. Nutrients 2018; 10:nu10101487. [PMID: 30322035 PMCID: PMC6213052 DOI: 10.3390/nu10101487] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Revised: 10/04/2018] [Accepted: 10/10/2018] [Indexed: 12/20/2022] Open
Abstract
Foods contain natural vitamin B12 forms, such as hydroxo–B12 (HO–B12), whereas vitamin pills contain the synthetic cyano–B12 (CN–B12). Recent studies in rats showed different tissue distributions of CN–B12 and HO–B12 24 h after oral administration. Here, we investigate whether these differences are sustained or leveled out with time in both B12-deplete and -replete rats, thereby assessing if the two forms are equally good at maintaining a normal B12 status. Male Wistar rats were fed diets with low (n = 16) or high (n = 12) B12 content for 17 days. At day 10, the rats received a single oral dose of [57Co]-labeled CN–B12 or HO–B12 (n = 6 and n = 8, respectively, in each diet group). The rats were sacrificed on day 17 and endogenous B12 and [57Co]–B12 were measured in liver, kidney, and plasma. We found that the low-B12 diet introduced a B12-deplete state as judged from medians of endogenous B12 compared to rats on a (high-B12 diet): Plasma (565 (1410) pmol/L), liver (28.2 (33.2) pmol/g), and kidneys (123 (1300) pmol/g). One week after oral administration, the labeled B12 was distributed as follows: HO–B12 > CN–B12 (liver) and CN–B12 > HO–B12 (kidneys, plasma). The tissue/plasma ratios showed different equilibriums for labeled CN–B12 and HO–B12 in the B12-deplete and -replete groups. The equilibrium of endogenous B12 resembled [57Co]CN–B12 in replete rats but differed from both [57Co]CN–B12 and [57Co]HO–B12 in deplete rats. The data suggest long-term differences in tissue utilization of the two B12 forms and warrant further studies concerning the possible benefits of consuming HO–B12 instead of CN–B12 in oral B12 replacement.
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Ozola-Zālīte I, Mark EB, Gudauskas T, Lyadov V, Olesen SS, Drewes AM, Pukitis A, Frokjær JB. Reliability and validity of the new VikingSlice software for computed tomography body composition analysis. Eur J Clin Nutr 2018; 73:54-61. [DOI: 10.1038/s41430-018-0110-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Revised: 11/08/2017] [Accepted: 01/12/2018] [Indexed: 12/17/2022]
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20
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Combination of vitamin B12 active forms improved fetal growth in Wistar rats through up-regulation of placental miR-16 and miR-21 levels. Life Sci 2017; 191:97-103. [DOI: 10.1016/j.lfs.2017.10.017] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Revised: 10/11/2017] [Accepted: 10/11/2017] [Indexed: 01/20/2023]
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21
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Kamath A, Pemminati S. Methylcobalamin in Vitamin B 12 Deficiency: To Give or not to Give? J Pharmacol Pharmacother 2017; 8:33-34. [PMID: 28405134 PMCID: PMC5370327 DOI: 10.4103/jpp.jpp_173_16] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Affiliation(s)
- Ashwin Kamath
- Department of Pharmacology, Kasturba Medical College, Manipal University, Mangalore, Karnataka, India
| | - Sudhakar Pemminati
- Department of Pharmacology, American University of Antigua College of Medicine, Antigua, Antigua and Barbuda
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Rizzo G, Laganà AS, Rapisarda AMC, La Ferrera GMG, Buscema M, Rossetti P, Nigro A, Muscia V, Valenti G, Sapia F, Sarpietro G, Zigarelli M, Vitale SG. Vitamin B12 among Vegetarians: Status, Assessment and Supplementation. Nutrients 2016; 8:E767. [PMID: 27916823 PMCID: PMC5188422 DOI: 10.3390/nu8120767] [Citation(s) in RCA: 177] [Impact Index Per Article: 22.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2016] [Revised: 11/23/2016] [Accepted: 11/23/2016] [Indexed: 02/06/2023] Open
Abstract
Cobalamin is an essential molecule for humans. It acts as a cofactor in one-carbon transfers through methylation and molecular rearrangement. These functions take place in fatty acid, amino acid and nucleic acid metabolic pathways. The deficiency of vitamin B12 is clinically manifested in the blood and nervous system where the cobalamin plays a key role in cell replication and in fatty acid metabolism. Hypovitaminosis arises from inadequate absorption, from genetic defects that alter transport through the body, or from inadequate intake as a result of diet. With the growing adoption of vegetarian eating styles in Western countries, there is growing focus on whether diets that exclude animal foods are adequate. Since food availability in these countries is not a problem, and therefore plant foods are sufficiently adequate, the most delicate issue remains the contribution of cobalamin, which is poorly represented in plants. In this review, we will discuss the status of vitamin B12 among vegetarians, the diagnostic markers for the detection of cobalamin deficiency and appropriate sources for sufficient intake, through the description of the features and functions of vitamin B12 and its absorption mechanism.
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Affiliation(s)
| | - Antonio Simone Laganà
- Unit of Gynecology and Obstetrics, Department of Human Pathology in Adulthood and Childhood, "G. Barresi", University of Messina, Via Consolare Valeria 1, Messina 98125, Italy.
| | - Agnese Maria Chiara Rapisarda
- Department of General Surgery and Medical Surgical Specialties, University of Catania, Via S. Sofia 78, Catania 95124, Italy.
| | - Gioacchina Maria Grazia La Ferrera
- Department of Gastroenterology and Digestive Endoscopy Maddalena Raimondi San Cataldo, Via Forlanini 5, San Cataldo, Caltanissetta 93017, Italy.
| | - Massimo Buscema
- Unit of Diabetology and Endocrino-Metabolic Diseases, Hospital for Emergency Cannizzaro, Via Messina 829, Catania 95126, Italy.
| | - Paola Rossetti
- Unit of Diabetology and Endocrino-Metabolic Diseases, Hospital for Emergency Cannizzaro, Via Messina 829, Catania 95126, Italy.
| | - Angela Nigro
- Unit of Diabetology and Endocrino-Metabolic Diseases, Hospital for Emergency Cannizzaro, Via Messina 829, Catania 95126, Italy.
| | - Vincenzo Muscia
- Unit of Diabetology and Endocrino-Metabolic Diseases, Hospital for Emergency Cannizzaro, Via Messina 829, Catania 95126, Italy.
| | - Gaetano Valenti
- Department of General Surgery and Medical Surgical Specialties, University of Catania, Via S. Sofia 78, Catania 95124, Italy.
| | - Fabrizio Sapia
- Department of General Surgery and Medical Surgical Specialties, University of Catania, Via S. Sofia 78, Catania 95124, Italy.
| | - Giuseppe Sarpietro
- Department of General Surgery and Medical Surgical Specialties, University of Catania, Via S. Sofia 78, Catania 95124, Italy.
| | - Micol Zigarelli
- Department of General Surgery and Medical Surgical Specialties, University of Catania, Via S. Sofia 78, Catania 95124, Italy.
| | - Salvatore Giovanni Vitale
- Unit of Gynecology and Obstetrics, Department of Human Pathology in Adulthood and Childhood, "G. Barresi", University of Messina, Via Consolare Valeria 1, Messina 98125, Italy.
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Shah T, Joshi K, Mishra S, Otiv S, Kumbar V. Molecular and cellular effects of vitamin B12 forms on human trophoblast cells in presence of excessive folate. Biomed Pharmacother 2016; 84:526-534. [PMID: 27693961 DOI: 10.1016/j.biopha.2016.09.071] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2016] [Revised: 09/19/2016] [Accepted: 09/19/2016] [Indexed: 11/19/2022] Open
Abstract
Folic acid (FA) and iron are essential supplements during pregnancy. Similarly effects of vitamin B12 (B12) inadequacy and high folate and low B12 status, on pregnancy outcome are available. However there are no mandatory recommendations for B12. There are many forms of B12 viz. Cyanocobalamin (Cbl), Methylcobalamin (MeCbl), Adenosylcobalamin (AdCbl), and Hydroxycobalamin (HCbl) though there is limited consensus on which form has better efficacy. In the present study we have determined effect of various forms of B12 in the presence of two FA concentrations namely normal physiological (20ng/mL; NPFA) and supra-physiological (2000ng/mL; SPFA) concentration to mimic real time situation where FA is in excess due to supplementation. We assessed trophoblastic proliferation, viability, TNFα and EGFr mRNA expression, homocysteine, β-hCG and MDA levels. Trophoblastic viability was significantly suppressed at SPFA concentration and was restored by B12 treatment with Cbl, AdCbl and combination of MeCbl+AdCbl. The mRNA expressions of TNFα were up-regulated, while EGFr were down-regulated at SPFA concentrations, as validated by RT-PCR. Treatment with MeCbl+AdCbl significantly decreased homocysteine and MDA levels at SPFA concentrations. High levels of FA alone had a detrimental effect on placental health and functions as reflected by decreased viability, EGFr expression and increased TNFα expression, homocysteine and MDA levels. Combination of B12 active forms i.e. MeCbl+AdCbl was found to be most effective in neutralising excess folate effect in-vitro.
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Affiliation(s)
- Tejas Shah
- Dr. Prabhakar Kore Basic Science Research Centre, KLE University, Nehru Nagar, Belagavi 590010, Karnataka, India
| | - Kalpana Joshi
- Department of Biotechnology, Sinhgad College of Engineering, Vadgaon Budruk, Pune 411041, Maharashtra, India.
| | - Sanjay Mishra
- Dr. Prabhakar Kore Basic Science Research Centre, KLE University, Nehru Nagar, Belagavi 590010, Karnataka, India
| | - Suhas Otiv
- Department of Gynaecology, KEM Hospital, Rasta Peth, Pune 411041, Maharashtra, India
| | - Vijay Kumbar
- Dr. Prabhakar Kore Basic Science Research Centre, KLE University, Nehru Nagar, Belagavi 590010, Karnataka, India
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24
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Nollet M, Mercé M, Laurichesse E, Pezon A, Soubabère O, Besse S, Schmitt V. Water fluxes and encapsulation efficiency in double emulsions: impact of emulsification and osmotic pressure unbalance. SOFT MATTER 2016; 12:3412-3424. [PMID: 26936127 DOI: 10.1039/c5sm03089g] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We study the influence of the emulsification process on encapsulation efficiency of drugs in double water-in-oil-in-water emulsions. Two drugs were used, first vitamin B12 which can be considered as a model drug and secondly a suspension of Cydia pomonella Granulovirus (CpGV), a virus used in organic agriculture to protect fruits against the Carpocapse insect. Encapsulation is measured by classical UV-Vis spectroscopy method. Additionally we show that rheology is a useful tool to determine water exchanges during emulsification. In a two-step emulsification process, using rotor-stator mixers, encapsulation reaches high levels, close to 100% whatever the flowing regime. This encapsulation decreases only if two conditions are fulfilled simultaneously: (i) during the second emulsification step the flow is turbulent and (ii) it leads to excessive fragmentation inducing formation of too small drops. We also investigate the effect of a deliberate loss of osmotic pressure balance on the encapsulation and characterize the induced water fluxes. We show that encapsulation of vitamin B12 is not affected by the osmotic pressure unbalance, while water exchanges, if they exist, are very fast and aim at restoring equilibrium. As a consequence, the emulsification efficiency is not very sensitive to osmotic stresses provided that the interfaces resist mechanically.
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Affiliation(s)
- Maxime Nollet
- Université de Bordeaux, Centre de Recherche Paul Pascal, CNRS 115 Av. A. Schweitzer, 33600 Pessac, France.
| | - Manuel Mercé
- Université de Bordeaux, Centre de Recherche Paul Pascal, CNRS 115 Av. A. Schweitzer, 33600 Pessac, France.
| | - Eric Laurichesse
- Université de Bordeaux, Centre de Recherche Paul Pascal, CNRS 115 Av. A. Schweitzer, 33600 Pessac, France.
| | - Annaïck Pezon
- Université de Bordeaux, Centre de Recherche Paul Pascal, CNRS 115 Av. A. Schweitzer, 33600 Pessac, France.
| | - Olivier Soubabère
- Natural Plant Protection, Arysta LifeScience's group, Parc d'activités Pau-Pyrénées, 35 avenue Léon Blum, 64000 Pau, France
| | - Samantha Besse
- Natural Plant Protection, Arysta LifeScience's group, Parc d'activités Pau-Pyrénées, 35 avenue Léon Blum, 64000 Pau, France
| | - Véronique Schmitt
- Université de Bordeaux, Centre de Recherche Paul Pascal, CNRS 115 Av. A. Schweitzer, 33600 Pessac, France.
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25
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Obeid R, Fedosov SN, Nexo E. Cobalamin coenzyme forms are not likely to be superior to cyano- and hydroxyl-cobalamin in prevention or treatment of cobalamin deficiency. Mol Nutr Food Res 2015; 59:1364-72. [PMID: 25820384 PMCID: PMC4692085 DOI: 10.1002/mnfr.201500019] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2015] [Revised: 03/25/2015] [Accepted: 03/25/2015] [Indexed: 12/12/2022]
Abstract
Methylcobalamin (MeCbl) and adenosylcobalamin (AdoCbl) are coenzymes for methionine synthase and methylmalonyl-CoA mutase, respectively. Hydroxylcobalamin (HOCbl) and cyanocobalamin (CNCbl) are frequently used for supplementation. MeCbl and AdoCbl have recently emerged as alternative forms in supplements. In the light of metabolic transformation of Cbl into its cofactor forms, this review discusses current evidence on efficacy and utility of different Cbl forms in preventing or treating Cbl deficiency. Cbl-transporting proteins bind and mediate the uptake of all aforementioned forms of Cbl. After internalization and lysosomal release, Cbl binds to the cytosolic chaperon MMACHC that is responsible for (i) flavin-dependent decyanation of [CN-Co3+]Cbl to [Co2+]Cbl; (ii) glutathione-dependent dealkylation of MeCbl and AdoCbl to [Co2+/1+]Cbl; and (iii) glutathione-dependent decyanation of CNCbl or reduction of HOCbl under anaerobic conditions. MMACHC shows a broad specificity for Cbl forms and supplies the Cbl2+ intermediate for synthesis of MeCbl and AdoCbl. Cobalamin chemistry, physiology, and biochemistry suggest that MeCbl and AdoCbl follow the same route of intracellular processing as CNCbl does. We conclude that supplementing MeCbl or AdoCbl is unlikely to be advantageous compared to CNCbl. On the other hand, there are obvious advantages of high parenteral doses (1–2 mg) of HOCbl in treating inborn errors of Cbl metabolism.
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Affiliation(s)
- Rima Obeid
- Aarhus Institute of Advanced Studies, , University of Aarhus, Aarhus, Denmark.,Department of Clinical Chemistry, University Hospital of the Saarland, Homburg, Germany
| | - Sergey N Fedosov
- Department of Clinical Biochemistry, Aarhus University Hospital, Aarhus C, Denmark.,Department of Molecular Biology and Genetics, Aarhus University, Aarhus C, Denmark
| | - Ebba Nexo
- Department of Clinical Biochemistry, Aarhus University Hospital, Aarhus C, Denmark
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26
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Naik SU, Sonawane DV. Methylcobalamine is effective in peripheral neuropathies. Eur J Clin Nutr 2015; 69:530. [PMID: 25585598 DOI: 10.1038/ejcn.2014.281] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- S U Naik
- Emcure Pharmaceuticals Ltd, Rajiv Gandhi IT Park, MIDC, Hinjawadi, Pune, India
| | - D V Sonawane
- Emcure Pharmaceuticals Ltd, Rajiv Gandhi IT Park, MIDC, Hinjawadi, Pune, India
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