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Gutiérrez-Rey M, Castellar-Visbal L, Acevedo-Vergara K, Vargas-Manotas J, Rivera-Porras D, Londoño-Juliao G, Castillo-Guerrero B, Perdomo-Jiménez MC, Bermúdez V. The Weight of Bariatric Surgery: Wernicke-Korsakoff Syndrome after Vertical Sleeve Gastrectomy-A Case Series. J Pers Med 2024; 14:638. [PMID: 38929859 PMCID: PMC11204981 DOI: 10.3390/jpm14060638] [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: 04/18/2024] [Revised: 06/05/2024] [Accepted: 06/08/2024] [Indexed: 06/28/2024] Open
Abstract
In this case series, the simultaneous occurrence of Wernicke's encephalopathy (WE) and dry beriberi was reported in three patients who underwent vertical sleeve gastrectomy (VSG) between May 2021 and May 2023. All patients were obese women who underwent vertical sleeve gastrectomy (VSG) without immediate postoperative complications, but two weeks later, hyperemesis and subsequent encephalopathy with ocular movement abnormalities and weakness were observed over the following thirty days. Patients were referred to neurology, where due to the high suspicion of WE, thiamine replacement therapy was initiated; meanwhile, diagnostic neuroimaging and blood tests were conducted. Neurological and psychiatric evaluations and neuroconduction studies were performed to assess the clinical evolution and present sequelae. One year after diagnosis, all patients exhibited affective and behavioral sequelae, anterograde memory impairment, and executive functioning deficits. Two patients met the criteria for Korsakoff syndrome. Additionally, peripheral nervous system sequelae were observed, with all patients presenting with sensorimotor polyneuropathy. In conclusion, Wernicke's encephalopathy requires a high diagnostic suspicion for timely intervention and prevention of irreversible sequelae, which can be devastating. Therefore, raising awareness among medical professionals regarding the significance of this disease is essential.
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Affiliation(s)
- Melissa Gutiérrez-Rey
- Universidad Simón Bolívar, Facultad de Ciencias de la Salud, Barranquilla 080001, Colombia; (M.G.-R.); (L.C.-V.); (J.V.-M.); (G.L.-J.); (B.C.-G.); (M.-C.P.-J.)
| | - Lily Castellar-Visbal
- Universidad Simón Bolívar, Facultad de Ciencias de la Salud, Barranquilla 080001, Colombia; (M.G.-R.); (L.C.-V.); (J.V.-M.); (G.L.-J.); (B.C.-G.); (M.-C.P.-J.)
| | | | - José Vargas-Manotas
- Universidad Simón Bolívar, Facultad de Ciencias de la Salud, Barranquilla 080001, Colombia; (M.G.-R.); (L.C.-V.); (J.V.-M.); (G.L.-J.); (B.C.-G.); (M.-C.P.-J.)
| | - Diego Rivera-Porras
- Universidad Simón Bolívar, Facultad de Ciencias Jurídicas y Sociales, Centro de Investigación en Estudios Fronterizos, Cúcuta 540001, Colombia;
| | - Gloria Londoño-Juliao
- Universidad Simón Bolívar, Facultad de Ciencias de la Salud, Barranquilla 080001, Colombia; (M.G.-R.); (L.C.-V.); (J.V.-M.); (G.L.-J.); (B.C.-G.); (M.-C.P.-J.)
| | - Brenda Castillo-Guerrero
- Universidad Simón Bolívar, Facultad de Ciencias de la Salud, Barranquilla 080001, Colombia; (M.G.-R.); (L.C.-V.); (J.V.-M.); (G.L.-J.); (B.C.-G.); (M.-C.P.-J.)
| | - María-Camila Perdomo-Jiménez
- Universidad Simón Bolívar, Facultad de Ciencias de la Salud, Barranquilla 080001, Colombia; (M.G.-R.); (L.C.-V.); (J.V.-M.); (G.L.-J.); (B.C.-G.); (M.-C.P.-J.)
| | - Valmore Bermúdez
- Universidad Simón Bolívar, Facultad de Ciencias de la Salud, Barranquilla 080001, Colombia; (M.G.-R.); (L.C.-V.); (J.V.-M.); (G.L.-J.); (B.C.-G.); (M.-C.P.-J.)
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2
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Coyne SP, Barrett K, Shultz J, Flanders JA, Bronson E. CASE DEFINITION AND TREATMENT TRIAL OF TETANY SYNDROME IN PANAMANIAN GOLDEN FROGS ( ATELOPUS ZETEKI). J Zoo Wildl Med 2024; 55:447-452. [PMID: 38875201 DOI: 10.1638/2023-0075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/26/2024] [Indexed: 06/16/2024] Open
Abstract
The mass extinction of amphibians necessitates specialized programs to ensure species' survival. Maryland Zoo in Baltimore houses the largest assurance population of the critically endangered Panamanian golden frog (Atelopus zeteki). However, individuals in this population experience a tetany-like syndrome, characterized by rigid/inappropriately positioned limbs and difficulty hopping, swimming, and righting. In this study, a syndrome case definition was assigned and the associated clinical signs were described. Then, four different treatments were systematically assessed in order to find the most effective protocol for treatment and begin to elucidate its underlying causes. Eighty-three frogs fulfilled the case definition and were treated orally for 14 d with either calcium gluconate, magnesium chloride, supplemental gavage feeding, or combination of calcium, magnesium, and vitamin B complex. Frogs were tested with a defined protocol assessing hopping, righting, and swimming abilities. Testing was performed at symptom onset and repeated weekly until resolution occurred. Analyses revealed that combination treatment was significantly more effective in eliminating clinical signs of tetany syndrome. Results show the most effective way to treat this syndrome, but do not help elucidate the underlying cause. Future work will focus on examining factors (e.g., diet, husbandry) that may elicit the syndrome for a more complete understanding of its etiology.
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Affiliation(s)
- Sean P Coyne
- Washington and Jefferson College, Washington, PA, 15301, USA,
| | - Kevin Barrett
- The Maryland Zoo in Baltimore, Baltimore, MD 21217, USA
| | | | | | - Ellen Bronson
- The Maryland Zoo in Baltimore, Baltimore, MD 21217, USA
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3
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Edwards KA, Randall EA, Wolfe PC, Kraft CE, Angert ER. Pre-analytical challenges from adsorptive losses associated with thiamine analysis. Sci Rep 2024; 14:10269. [PMID: 38704450 PMCID: PMC11069560 DOI: 10.1038/s41598-024-60910-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2024] [Accepted: 04/29/2024] [Indexed: 05/06/2024] Open
Abstract
Thiamine (vitamin B1) is an essential vitamin serving in its diphosphate form as a cofactor for enzymes in the citric acid cycle and pentose-phosphate pathways. Its concentration reported in the pM and nM range in environmental and clinical analyses prompted our consideration of the components used in pre-analytical processing, including the selection of filters, filter apparatuses, and sample vials. The seemingly innocuous use of glass fiber filters, glass filter flasks, and glass vials, ubiquitous in laboratory analysis of clinical and environmental samples, led to marked thiamine losses. 19.3 nM thiamine was recovered from a 100 nM standard following storage in glass autosampler vials and only 1 nM of thiamine was obtained in the filtrate of a 100 nM thiamine stock passed through a borosilicate glass fiber filter. We further observed a significant shift towards phosphorylated derivatives of thiamine when an equimolar mixture of thiamine, thiamine monophosphate, and thiamine diphosphate was stored in glass (most notably non-silanized glass, where a reduction of 54% of the thiamine peak area was observed) versus polypropylene autosampler vials. The selective losses of thiamine could lead to errors in interpreting the distribution of phosphorylated species in samples. Further, some loss of phosphorylated thiamine derivatives selectively to amber glass vials was observed relative to other glass vials. Our results suggest the use of polymeric filters (including nylon and cellulose acetate) and storage container materials (including polycarbonate and polypropylene) for thiamine handling. Losses to cellulose nitrate and polyethersulfone filters were far less substantial than to glass fiber filters, but were still notable given the low concentrations expected in samples. Thiamine losses were negated when thiamine was stored diluted in trichloroacetic acid or as thiochrome formed in situ, both of which are common practices, but not ubiquitous, in thiamine sample preparation.
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Affiliation(s)
- Katie A Edwards
- Department of Pharmaceutical Sciences, Binghamton University, Binghamton, NY, 13902, USA.
- Department of Microbiology, Cornell University, Ithaca, NY, 14853, USA.
| | - Eileen A Randall
- Department of Natural Resources and the Environment, Cornell University, Ithaca, NY, 14853, USA
| | - Patricia C Wolfe
- Department of Pharmaceutical Sciences, Binghamton University, Binghamton, NY, 13902, USA
| | - Clifford E Kraft
- Department of Natural Resources and the Environment, Cornell University, Ithaca, NY, 14853, USA
| | - Esther R Angert
- Department of Microbiology, Cornell University, Ithaca, NY, 14853, USA
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4
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Jackson C, Furnes M, Rød‐Eriksen L, Yap KN, Davey M, Fossøy F, Flagstad Ø, Eide NE, Mjøen T, Ulvund K. Subclinical thiamine deficiency results in failed reproduction in Arctic foxes. Vet Med Sci 2024; 10:e1358. [PMID: 38356320 PMCID: PMC10867461 DOI: 10.1002/vms3.1358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 11/20/2023] [Accepted: 01/07/2024] [Indexed: 02/16/2024] Open
Abstract
Thiamine deficiency can result in life-threatening physiological and neurological complications. While a thiamine-deficient diet may result in the onset of such symptoms, the presence of thiaminase - an enzyme that breaks down thiamine - is very often the cause. In such instances, thiaminase counteracts the bioavailability and uptake of thiamine, even when food-thiamine levels are adequate. Here, we report on a case of failed reproduction in seven Arctic fox (Vulpes lagopus) breeding pairs kept at a captive breeding facility, including the presentation of severe thiamine deficiency symptoms in two male foxes. Symptoms included ataxia, obtundation, truncal sway, star-gazing and visual impairment. Blood tests were inconclusive, yet symptoms resolved following treatment with a series of thiamine hydrochloride injections, thereby verifying the diagnosis. A fish-dominated feed, which for the first time had been frozen for a prolonged period, was identified as the likely source of thiaminase and subsequent deterioration in the animals' health. Symptoms in the two males arose during the annual mating period. All seven breeding pairs at the captive breeding station failed to reproduce - a phenomenon never recorded during the captive breeding facility's preceding 17-year operation. Relating our findings to peer-reviewed literature, the second part of this case report assesses how thiamine deficiency (due to thiaminase activity) likely resulted in subclinical effects that impaired the production of reproduction hormones, and thereby led to a complete breeding failure. While previous work has highlighted the potentially lethal effects of thiamine deficiency in farmed foxes, this is, to our knowledge the first study showing how subclinical effects in both males and females may inhibit reproduction in foxes in general, but specifically Arctic foxes. The findings from our case report are not only relevant for captive breeding facilities, but for the welfare and management of captive carnivorous animals in general.
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Affiliation(s)
- Craig Jackson
- Department of Terrestrial EcologyNorwegian Institute for Nature Research (NINA)TrondheimNorway
| | - Marianne Furnes
- Department of Terrestrial EcologyNorwegian Institute for Nature Research (NINA)TrondheimNorway
| | - Lars Rød‐Eriksen
- Department of Terrestrial EcologyNorwegian Institute for Nature Research (NINA)TrondheimNorway
| | - Kang Nian Yap
- Department of BiologyNorwegian University of Science and TechnologyTrondheimNorway
| | - Marie Davey
- Department of Terrestrial BiodiversityNorwegian Institute for Nature Research (NINA)TrondheimNorway
| | - Frode Fossøy
- Department of Aquatic BiodiversityNorwegian Institute for Nature Research (NINA)TrondheimNorway
| | - Øystein Flagstad
- Department of Terrestrial EcologyNorwegian Institute for Nature Research (NINA)TrondheimNorway
| | - Nina E. Eide
- Department of Terrestrial EcologyNorwegian Institute for Nature Research (NINA)TrondheimNorway
| | - Toralf Mjøen
- Department of Terrestrial EcologyNorwegian Institute for Nature Research (NINA)TrondheimNorway
| | - Kristine Ulvund
- Department of Terrestrial EcologyNorwegian Institute for Nature Research (NINA)TrondheimNorway
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5
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Berlin N, Pfaff A, Rozanski EA, Chalifoux NV, Hess RS, Donnino MW, Silverstein DC. Establishment of a reference interval for thiamine concentrations in healthy dogs and evaluation of the prevalence of absolute thiamine deficiency in critically ill dogs with and without sepsis using high-performance liquid chromatography. J Vet Emerg Crit Care (San Antonio) 2024; 34:49-56. [PMID: 37987121 PMCID: PMC11007751 DOI: 10.1111/vec.13341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Revised: 07/11/2022] [Accepted: 07/29/2022] [Indexed: 11/22/2023]
Abstract
OBJECTIVE To determine the normal reference interval (RI) for thiamine concentrations in healthy dogs and investigate the prevalence of thiamine deficiency in critically ill dogs with and without sepsis. DESIGN Prospective, observational, multicenter study, conducted between 2019 and 2021. SETTING Two veterinary university teaching hospitals. ANIMALS A total of 109 dogs were enrolled into 3 groups: 40 healthy dogs, 33 dogs with suspected or confirmed sepsis and evidence of tissue hypoperfusion (Doppler blood pressure ≤90 mm Hg or plasma lactate ≥3 mmol/L), and 36 dogs with other critical illnesses and evidence of tissue hypoperfusion. INTERVENTIONS For each dog, CBC, serum biochemistry, plasma lactate concentration, whole-blood thiamine concentration, blood pressure, vital parameters, Acute Patient Physiologic and Laboratory Evaluation (APPLE)fast score, and clinical outcomes were recorded, alongside basic patient parameters and dietary history. Whole-blood thiamine pyrophosphate (TPP) concentrations were measured using high-performance liquid chromatography. MEASUREMENTS AND MAIN RESULTS The RI for whole-blood TPP in healthy dogs was 70.9-135.3 μg/L. Median TPP concentrations were significantly lower in septic dogs compared to healthy controls (P = 0.036). No significant difference in median TPP concentrations was found between septic dogs and nonseptic critically ill dogs, or between healthy dogs and nonseptic critically ill dogs. TPP concentrations were below the normal RI in 27.3% of septic dogs, compared to 19.4% of nonseptic critically ill dogs (P = 0.57). No correlations were found between TPP concentrations and lactate concentrations, age, body condition scores, time since last meal, RBC count, serum alanine aminotransferase, APPLEfast scores, or patient outcomes. CONCLUSIONS TPP concentrations were significantly lower in septic dogs compared to healthy controls, with an absolute thiamine deficiency found in 27.3% of septic dogs. The established TPP RI allows for further investigation of thiamine deficiency in critically ill dogs.
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Affiliation(s)
- Noa Berlin
- Foster Hospital for Small Animals, Cummings School of Veterinary Medicine at Tufts University, North Grafton, MA, USA
- Center for Resuscitation Science, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Alexandra Pfaff
- Foster Hospital for Small Animals, Cummings School of Veterinary Medicine at Tufts University, North Grafton, MA, USA
| | - Elizabeth A Rozanski
- Foster Hospital for Small Animals, Cummings School of Veterinary Medicine at Tufts University, North Grafton, MA, USA
| | - Nolan V Chalifoux
- Matthew J Ryan Veterinary Hospital of the University of Pennsylvania, Philadelphia, PA, USA
| | - Rebecka S Hess
- Matthew J Ryan Veterinary Hospital of the University of Pennsylvania, Philadelphia, PA, USA
| | - Michael W Donnino
- Center for Resuscitation Science, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Deborah C Silverstein
- Matthew J Ryan Veterinary Hospital of the University of Pennsylvania, Philadelphia, PA, USA
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6
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Mrowicka M, Mrowicki J, Dragan G, Majsterek I. The importance of thiamine (vitamin B1) in humans. Biosci Rep 2023; 43:BSR20230374. [PMID: 37389565 PMCID: PMC10568373 DOI: 10.1042/bsr20230374] [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: 03/02/2023] [Revised: 06/11/2023] [Accepted: 06/14/2023] [Indexed: 07/01/2023] Open
Abstract
Thiamine (thiamin, B1) is a vitamin necessary for proper cell function. It exists in a free form as a thiamine, or as a mono-, di- or triphosphate. Thiamine plays a special role in the body as a coenzyme necessary for the metabolism of carbohydrates, fats and proteins. In addition, it participates in the cellular respiration and oxidation of fatty acids: in malnourished people, high doses of glucose result in acute thiamine deficiency. It also participates in energy production in the mitochondria and protein synthesis. In addition, it is also needed to ensure the proper functioning of the central and peripheral nervous system, where it is involved in neurotransmitter synthesis. Its deficiency leads to mitochondrial dysfunction, lactate and pyruvate accumulation, and consequently to focal thalamic degeneration, manifested as Wernicke's encephalopathy or Wernicke-Korsakoff syndrome. It can also lead to severe or even fatal neurologic and cardiovascular complications, including heart failure, neuropathy leading to ataxia and paralysis, confusion, or delirium. The most common risk factor for thiamine deficiency is alcohol abuse. This paper presents current knowledge of the biological functions of thiamine, its antioxidant properties, and the effects of its deficiency in the body.
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Affiliation(s)
- Małgorzata Mrowicka
- Małgorzata Mrowicka, Jerzy Mrowicki, Grzegorz Dragan, Ireneusz Majsterek, Department of Clinical Chemistry and Biochemistry, Medical University of Lodz, Mazowiecka 5, 92-215 Lodz, Poland
| | - Jerzy Mrowicki
- Małgorzata Mrowicka, Jerzy Mrowicki, Grzegorz Dragan, Ireneusz Majsterek, Department of Clinical Chemistry and Biochemistry, Medical University of Lodz, Mazowiecka 5, 92-215 Lodz, Poland
| | - Grzegorz Dragan
- Małgorzata Mrowicka, Jerzy Mrowicki, Grzegorz Dragan, Ireneusz Majsterek, Department of Clinical Chemistry and Biochemistry, Medical University of Lodz, Mazowiecka 5, 92-215 Lodz, Poland
| | - Ireneusz Majsterek
- Małgorzata Mrowicka, Jerzy Mrowicki, Grzegorz Dragan, Ireneusz Majsterek, Department of Clinical Chemistry and Biochemistry, Medical University of Lodz, Mazowiecka 5, 92-215 Lodz, Poland
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7
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Ruiz-Riera E, Vidal E, Canturri A, Lehmbecker A, Cuvertoret M, Lopez-Figueroa C, Baumgärtner W, Domingo M, Segalés J. Porcine Forebrain Vacuolization Associated with Wasting in Pigs: A Novel Pathological Outcome Associated with Vitamin-Mineral Deficiency? Animals (Basel) 2023; 13:2255. [PMID: 37508034 PMCID: PMC10376092 DOI: 10.3390/ani13142255] [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: 06/20/2023] [Revised: 07/05/2023] [Accepted: 07/07/2023] [Indexed: 07/30/2023] Open
Abstract
The term wasting refers to a clinical sign used to describe a physical condition characterized by growth retardation, usually of multifactorial origin. The objective of the present study was to describe for the first time a pathological process characterized by forebrain neuropil vacuolization in pigs showing wasting without conspicuous neurological signs. To characterize the lesions pathologically, affected and non-affected pigs from eight of these farms were investigated. Histologically, the most consistent lesion was neuropil vacuolization of the prosencephalon, mainly located in the thalamic nuclei and in the transition between the white and grey matter of the neocortex (40/56 in sick and 4/30 in healthy pigs). In the most severe cases, the vacuolation also involved the midbrain, cerebellar nuclei and, to a lesser extent, the medulla oblongata. Vacuolization of the forebrain was associated with pigs experiencing marked emaciation and growth retardation. Although the specific cause of the present case remained unknown, the preventive use of multivitamin and mineral complexes in drinking water ameliorated the condition, strongly suggesting a metabolic origin of the observed condition.
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Affiliation(s)
- E Ruiz-Riera
- Departament de Sanitat i Anatomia Animals, Facultat de Veterinària, Campus de la Universitat Autònoma de Barcelona (UAB), 08193 Bellaterra, Spain
| | - E Vidal
- Unitat Mixta d'Investigació IRTA-UAB en Sanitat Animal, Centre de Recerca en Sanitat Animal (CReSA), Campus de la Universitat Autònoma de Barcelona (UAB), 08193 Bellaterra, Spain
- IRTA, Programa de Sanitat Animal, Centre de Recerca en Sanitat Animal (CReSA), Campus de la Universitat Autònoma de Barcelona (UAB), 08193 Bellaterra, Spain
- OIE Collaborating Centre for the Research and Control of Emerging and Re-Emerging Swine Diseases in Europe (IRTA-CReSA), 08193 Bellaterra, Spain
| | - A Canturri
- Departament de Sanitat i Anatomia Animals, Facultat de Veterinària, Campus de la Universitat Autònoma de Barcelona (UAB), 08193 Bellaterra, Spain
- Department of Veterinary Population Medicine, College of Veterinary Medicine, University of Minnesota, St. Paul, MN 55455, USA
- Veterinary Diagnostic Laboratory, College of Veterinary Medicine, University of Minnesota, St. Paul, MN 55455, USA
| | - A Lehmbecker
- Department of Pathology, University of Veterinary Medicine, 30545 Hannover, Germany
| | - M Cuvertoret
- Departament de Sanitat i Anatomia Animals, Facultat de Veterinària, Campus de la Universitat Autònoma de Barcelona (UAB), 08193 Bellaterra, Spain
| | - C Lopez-Figueroa
- Departament de Sanitat i Anatomia Animals, Facultat de Veterinària, Campus de la Universitat Autònoma de Barcelona (UAB), 08193 Bellaterra, Spain
- Unitat Mixta d'Investigació IRTA-UAB en Sanitat Animal, Centre de Recerca en Sanitat Animal (CReSA), Campus de la Universitat Autònoma de Barcelona (UAB), 08193 Bellaterra, Spain
- IRTA, Programa de Sanitat Animal, Centre de Recerca en Sanitat Animal (CReSA), Campus de la Universitat Autònoma de Barcelona (UAB), 08193 Bellaterra, Spain
| | - W Baumgärtner
- Department of Pathology, University of Veterinary Medicine, 30545 Hannover, Germany
| | - M Domingo
- Departament de Sanitat i Anatomia Animals, Facultat de Veterinària, Campus de la Universitat Autònoma de Barcelona (UAB), 08193 Bellaterra, Spain
- Unitat Mixta d'Investigació IRTA-UAB en Sanitat Animal, Centre de Recerca en Sanitat Animal (CReSA), Campus de la Universitat Autònoma de Barcelona (UAB), 08193 Bellaterra, Spain
- OIE Collaborating Centre for the Research and Control of Emerging and Re-Emerging Swine Diseases in Europe (IRTA-CReSA), 08193 Bellaterra, Spain
| | - J Segalés
- Departament de Sanitat i Anatomia Animals, Facultat de Veterinària, Campus de la Universitat Autònoma de Barcelona (UAB), 08193 Bellaterra, Spain
- Unitat Mixta d'Investigació IRTA-UAB en Sanitat Animal, Centre de Recerca en Sanitat Animal (CReSA), Campus de la Universitat Autònoma de Barcelona (UAB), 08193 Bellaterra, Spain
- OIE Collaborating Centre for the Research and Control of Emerging and Re-Emerging Swine Diseases in Europe (IRTA-CReSA), 08193 Bellaterra, Spain
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8
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Edwards KA, Randall EA, Wolfe PC, Angert ER, Kraft CE. Dietary factors potentially impacting thiaminase I-mediated thiamine deficiency. Sci Rep 2023; 13:7008. [PMID: 37117240 PMCID: PMC10147936 DOI: 10.1038/s41598-023-34063-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Accepted: 04/24/2023] [Indexed: 04/30/2023] Open
Abstract
Fish population declines from thiamine (vitamin B1) deficiency have been widespread in ecologically and economically valuable organisms, ranging from the Great Lakes to the Baltic Sea and, most recently, the California coast. Thiamine deficiencies in predatory fishes are often attributed to a diet of prey fishes with high levels of thiamine-degrading (e.g., thiaminase) enzymes, such as alewives, rainbow smelt, and anchovies. Since their discovery, thiaminase I enzymes have been recognized for breaking down thiamine into its pyrimidine and thiazole moieties using various nucleophilic co-substrates to afford cleavage, but these studies have not thoroughly considered other factors that could modify enzyme activity. We found the thiaminase I enzyme from Clostridium botulinum efficiently degrades thiamine in the presence of pyridoxine (vitamin B6) as a co-substrate but has relatively limited activity in the presence of nicotinic acid (vitamin B3). Using fluorescence measurements, thiamine degradation in an over-the-counter complete multivitamin formulation was inhibited, and a B-complex formulation required co-substrate supplementation for maximal thiamine depletion. These studies prompted the evaluation of specific constituents contributing to thiaminase I inhibition by both chromatography and fluorescence assays: Cu2+ potently and irreversibly inhibited thiamine degradation; ascorbic acid was a strong but reversible inhibitor; Fe2+, Mn2+ and Fe3+ modulated thiamine degradation to a lesser degree. The enhancement by pyridoxine and inhibition by Cu2+ extended to thiaminase-mediated degradation from Burkholderia thailandensis, Paenibacillus thiaminolyticus, and Paenibacillus apiarius in tryptic soy broth supernatants. These co-substrate limitations and the common presence of inhibitory dietary factors complement recent studies reporting that the intended function of thiaminase enzymes is to recycle thiamine breakdown products for thiamine synthesis, not thiamine degradation.
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Affiliation(s)
- Katie A Edwards
- Department of Pharmaceutical Sciences, Binghamton University, Binghamton, NY, 13902, USA.
- Department of Microbiology, Cornell University, Ithaca, NY, 14853, USA.
| | - Eileen A Randall
- Department of Natural Resources and the Environment, Cornell University, Ithaca, NY, 14853, USA
| | - Patricia C Wolfe
- Department of Pharmaceutical Sciences, Binghamton University, Binghamton, NY, 13902, USA
| | - Esther R Angert
- Department of Microbiology, Cornell University, Ithaca, NY, 14853, USA
| | - Clifford E Kraft
- Department of Natural Resources and the Environment, Cornell University, Ithaca, NY, 14853, USA
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9
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Wolfe PC, Tuske AM, Tillitt DE, Allen F, Edwards KA. Understanding and mitigating thiaminase activity in silver carp. Curr Res Food Sci 2023; 6:100502. [PMID: 37377495 PMCID: PMC10290998 DOI: 10.1016/j.crfs.2023.100502] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 04/05/2023] [Accepted: 04/06/2023] [Indexed: 06/29/2023] Open
Abstract
A deficiency of thiamine (vitamin B1), an essential cofactor for enzymes involved in metabolic processes, can be caused by the enzyme thiaminase. Thiaminase in food stocks has been linked to morbidity and mortality due to thiamine depletion in many ecologically and economically important species. Thiaminase activity has been detected in certain bacteria, plants, and fish species, including carp. The invasive silver carp (Hypophthalmichthys molitrix) presents an enormous burden to ecosystems throughout the Mississippi River watershed. Its large biomass and nutritional content offer an attractive possibility as a food source for humans, wild animals, or pets. Additionally, harvesting this fish could alleviate some of the effects of this species on waterways. However, the presence of thiaminase would detract from its value for dietary consumption. Here we confirm the presence of thiaminase in several tissues from silver carp, most notably the viscera, and systematically examine the effects of microwaving, baking, dehydrating, and freeze-drying on thiaminase activity. Certain temperatures and durations of baking and microwaving reduced thiaminase activity to undetectable levels. However, caution should be taken when carp tissue is concentrated by processes without sufficient heat treatment, such as freeze-drying or dehydration, which results in concentration, but not inactivation of the enzyme. The effects of such treatments on the ease of extracting proteins, including thiaminase, and the impact on data interpretation using the 4-nitrothiophenol (4-NTP) thiaminase assay were considered.
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Affiliation(s)
- Patricia C. Wolfe
- Department of Pharmaceutical Sciences, Binghamton University, Binghamton, NY, 13902, USA
| | - Amber M. Tuske
- Department of Pharmaceutical Sciences, Binghamton University, Binghamton, NY, 13902, USA
| | - Donald E. Tillitt
- U.S. Geological Survey, Columbia Environmental Research Center, Columbia, MO, 65201, USA
| | - Fred Allen
- RADii Solutions, LLC, Princeton, NJ, 08540, USA
- Carpe Eat'm, LLC, Paducah, KY, 42001, USA
| | - Katie A. Edwards
- Department of Pharmaceutical Sciences, Binghamton University, Binghamton, NY, 13902, USA
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Lane SL, Dowgos NM, Brainard BM. Evaluation of blood thiamine concentration in hospitalized dogs with and without critical illness. J Vet Emerg Crit Care (San Antonio) 2022; 32:723-732. [PMID: 36082426 DOI: 10.1111/vec.13245] [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: 04/08/2021] [Revised: 09/08/2021] [Accepted: 09/11/2021] [Indexed: 11/28/2022]
Abstract
OBJECTIVE To evaluate blood thiamine concentration in healthy and critically ill hospitalized dogs over 72 hours of hospitalization and to identify any association of thiamine concentration with patient morbidity and mortality. DESIGN Prospective, observational, clinical study. SETTING University veterinary teaching hospital. ANIMALS Thirty-one hospitalized healthy dogs and 37 dogs with critical illness. Dogs with critical illness had nonseptic (n = 24) or septic (n = 13) etiologies. INTERVENTIONS None. MEASUREMENTS AND MAIN RESULTS Whole blood EDTA samples were collected within 24 hours of admission and 72 hours later. Samples were stored at -80°C and batch analyzed. Total thiamine (tB1) and thiamine diphosphate (TDP) concentrations were measured using high-performance liquid chromatography, and free thiamine concentration was determined using liquid chromatography with tandem mass spectrometry. Collected patient data included CBC, biochemistry profile, plasma lactate concentration, shock index, Acute Patient Physiologic and Laboratory Evaluation Score (APPLEfast ) score, comorbid conditions, and patient outcome. Approximately 92% of tB1 present in whole blood is measured as TDP. TDP concentration was strongly correlated with tB1 (R = 0.97, P < 0.0001). Thiamine concentration, represented by TDP, was not different at admission or at 72 hours in all dogs. TDP concentration was lower in septic dogs requiring surgery at admission (P = 0.044) and 72 hours later (P = 0.008), compared to dogs not requiring surgery. TDP concentration was not different between dogs with and without stable chronic diseases at any time point. Older dogs had lower TDP concentration. Positive correlations were seen between TDP and body weight, APPLEfast score, and WBC count. Critically ill dogs with lower admission plasma lactate concentration were more likely to have an increase in thiamine over time (P = 0.0142). CONCLUSIONS Differences in thiamine concentration were not identified in hospitalized healthy or critically ill dogs. Further investigation into the clinical relevance of thiamine deficiency is indicated in septic dogs undergoing surgery.
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Affiliation(s)
- Selena L Lane
- Department of Small Animal Medicine and Surgery, College of Veterinary Medicine, University of Georgia, Athens, Georgia, USA
| | - Nicole M Dowgos
- Department of Small Animal Medicine and Surgery, College of Veterinary Medicine, University of Georgia, Athens, Georgia, USA
| | - Benjamin M Brainard
- Department of Small Animal Medicine and Surgery, College of Veterinary Medicine, University of Georgia, Athens, Georgia, USA
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11
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Alrubaye HS, Kohl KD. Abundance and Compositions of B-Vitamin-Producing Microbes in the Mammalian Gut Vary Based on Feeding Strategies. mSystems 2021; 6:e0031321. [PMID: 34463576 DOI: 10.1128/msystems.00313-21] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Accepted: 08/11/2021] [Indexed: 11/20/2022] Open
Abstract
Mammals maintain close associations with gut microbes that provide numerous nutritional benefits, including vitamin synthesis. While most mammals obtain sufficient vitamins from their diets, deficiencies in various B vitamins (biotin, cobalamin, riboflavin, thiamine, etc.) are reported in captive animals. Biomedical and agricultural research has shown that gut microbes are capable of synthesizing B vitamins and assisting with host vitamin homeostasis. However, we have a poor understanding of distribution and abundance of B-vitamin synthesis across mammalian hosts. Here, we leveraged a publicly available metagenomic data set from 39 mammalian species and used MG-RAST to compare the abundance and composition of B-vitamin-synthesizing microbes across mammalian feeding strategies. We predicted that herbivores would have the highest abundance of genes associated with vitamin synthesis, as plant material is often low in B vitamins. However, this hypothesis was not supported. Instead, we found that relative abundances of genes associated with cobalamin and thiamine synthesis were significantly enriched in carnivorous mammals. The taxonomic community structure of microbes predicted to be involved in B-vitamin synthesis also varied significantly based on host feeding strategy. For example, the genus Acinetobacter primarily contributed to predicted biotin synthesis in carnivores but was not predicted to contribute to biotin synthesis in herbivores or omnivores. Given that B vitamins cannot be stored within the body, we hypothesize that microbial synthesis of B vitamins could be important for wild carnivores that regularly experience periods of fasting. Overall, these results shed light on the distribution and abundance of microbial B-vitamin synthesis across mammalian groups, with potential implications for captive animals. IMPORTANCE Microbial communities offer numerous physiological services to their hosts, but we still have a poor understanding of how these functions are structured across mammalian species. Specifically, our understanding of processes of vitamin synthesis across animals is severely limited. Here, we compared the abundance of genes associated with the synthesis of B vitamins and the taxonomic composition of the microbes containing these genes. We found that herbivores, omnivores, and carnivores harbor distinct communities of microbes that putatively conduct vitamin synthesis. Additionally, carnivores exhibited the highest abundance of genes associated with synthesis of specific B vitamins, cobalamin and thiamine. These data uncover the potential importance of microbes in the vitamin homeostasis of various mammals, especially carnivorous mammals. These findings have implications for understanding the microbial interactions that contribute to the nutritional requirements of animals held in captivity.
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Affiliation(s)
- Hisham S Alrubaye
- Department of Biological Sciences, University of Pittsburghgrid.21925.3d, Pittsburgh, Pennsylvania, USA
| | - Kevin D Kohl
- Department of Biological Sciences, University of Pittsburghgrid.21925.3d, Pittsburgh, Pennsylvania, USA
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12
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Craig JM. Additives in pet food: are they safe? J Small Anim Pract 2021; 62:624-635. [PMID: 34109637 DOI: 10.1111/jsap.13375] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Revised: 02/03/2021] [Accepted: 04/29/2021] [Indexed: 01/10/2023]
Abstract
A good, nutritious diet is essential for the health and well-being of our domestic pets. Today, most pet dogs and cats are fed highly processed food bearing little resemblance to canine and feline ancestral diets. Additives are included in processed pet food to provide nutritional benefits, ensure food safety, and maintain the desirable features of colour, flavour, texture, stability and resistance to spoilage. This paper reviews the safety of various additives in processed pet food. Labelling, safety assessment, and ethical concerns regarding existing toxicity testing procedures are also considered. The adequacy of testing for many additives and the scientific basis for determining safety are questioned. Additives can be synthetic or 'natural' although the distinction can be blurred when naturally derived substances are synthesised in the laboratory, or extracted using a high level of physical and chemical processing. Although additives play important roles in processed food production, updated strategies and technologies may be required to establish their safety in the pet food industry.
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Affiliation(s)
- J M Craig
- Re-Fur-All Referrals, Newbury, Berkshire, RG14 7QH, UK
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13
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Fantinati M, Dufayet R, Rouch-Buck P, Priymenko N. Relationship between a plant-based 'vegan' pet food and clinical manifestation of multiple nutrient deficiencies in two cats. J Anim Physiol Anim Nutr (Berl) 2021; 105:1179-1191. [PMID: 33656761 DOI: 10.1111/jpn.13510] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 11/25/2020] [Accepted: 02/01/2021] [Indexed: 11/26/2022]
Abstract
A topical subject in human nutrition is the steadily growing number of people choosing to limit or completely avoid all animal-derived food products either for moral dilemma, health concerns or both. To meet people's will of applying their dietary choices to their domestic animals, the pet food industry answered by launching on the market some plant-based diets. This leads to concerns about whether these diets are adequately formulated to satisfy the target species nutritional requirements, especially for cats which are still considered strict carnivores. This case report follows a 2-year-old male neutered Main Coon and a 1-year-old female spayed Domestic Shorthair cat, presented to the nutrition service of the University of Toulouse, France. Reason for consultation was lethargy with in anamnesis a recent dietary transition to a plant-based pet food. Dysorexia, lethargy and muscle waste were present at first consultation. Progressive weight loss developed during follow-ups. A macrocytic, non-regenerative anaemia with serum folates below reference were the main clinical features. Analysis of pet food showed multiple nutrients below minimum recommendation at the average daily intake of both cats. Folic acid supplementation improved dysorexia, and subsequent reintroduction of animal-derived ingredients in the diet restored appetite, weight and a normal mentation in both cases.
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Affiliation(s)
- Marco Fantinati
- Nutrition Department, Ecole Nationale Vétérinaire de Toulouse ENVT, Toulouse, France
| | - Romane Dufayet
- Nutrition Department, Ecole Nationale Vétérinaire de Toulouse ENVT, Toulouse, France
| | - Petra Rouch-Buck
- Nutrition Department, Ecole Nationale Vétérinaire de Toulouse ENVT, Toulouse, France
| | - Nathalie Priymenko
- Nutrition Department, Ecole Nationale Vétérinaire de Toulouse ENVT, Toulouse, France
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14
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Ott M, Werneke U. Wernicke's encephalopathy - from basic science to clinical practice. Part 1: Understanding the role of thiamine. Ther Adv Psychopharmacol 2020; 10:2045125320978106. [PMID: 33447357 PMCID: PMC7780320 DOI: 10.1177/2045125320978106] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Accepted: 11/10/2020] [Indexed: 01/19/2023] Open
Abstract
Wernicke's encephalopathy (WE) is an acute neuropsychiatric state. Untreated, WE can lead to coma or death, or progress to Korsakoff syndrome (KS) - a dementia characterized by irreversible loss of anterograde memory. Thiamine (vitamin B1) deficiency lies at the heart of this condition. Yet, our understanding of thiamine regarding prophylaxis and treatment of WE remains limited. This may contribute to the current undertreatment of WE in clinical practice. The overall aim of this review is to identify the best strategies for prophylaxis and treatment of WE in regard to (a) dose of thiamine, (b) mode of administration, (c) timing of switch from one mode of administration to another, (d) duration of administration, and (e) use of magnesium along thiamine as an essential cofactor. Evidence from randomized controlled trials and other intervention studies is virtually absent. Therefore, we have to resort to basic science for proof of principle instead. Here, we present the first part of our clinical review, in which we explore the physiology of thiamine and the pathophysiology of thiamine deficiency. We first explore both of these in their historical context. We then review the pharmacodynamics and pharmacokinetics of thiamine, exploring the roles of the six currently known thiamine compounds, their transporters, and target enzymes. We also explore the significance of magnesium as a cofactor in thiamine-facilitated enzymatic reactions and thiamine transport. In the second (forthcoming) part of this review, we will use the findings of the current review to make evidence-based inferences about strategies for prophylaxis and treatment of WE.
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Affiliation(s)
- Michael Ott
- Department of Public Health and Clinical Medicine, Division of Medicine, Umeå University, Umeå, Sweden
| | - Ursula Werneke
- Department of Clinical Sciences, Division of Psychiatry, Sunderby Research Unit, Umeå University, Umeå, Sweden
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15
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Song JH, Jung DI. Thiamine deficiency in a dog associated with exclusive consumption of boiled sweet potato (Ipomoea batatas): Serial changes in clinical findings, magnetic resonance imaging findings and blood lactate and thiamine concentrations. Vet Med Sci 2020; 7:69-76. [PMID: 32966700 PMCID: PMC7840196 DOI: 10.1002/vms3.352] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 07/24/2020] [Accepted: 08/29/2020] [Indexed: 12/30/2022] Open
Abstract
Thiamine (vitamin B1) is an essential nutrient that significantly influences ATP production in the body. It needs to be supplemented consistently through an exogenous source to prevent deficiency; however, it is easily affected by a variety of mitigating factors. Additionally, thiamine requirements can be influenced by an individual's dietary composition. The nervous system is particularly vulnerable to thiamine deficiency due to its high metabolic demand. Thiamine deficiency is typically diagnosed based on clinical signs, dietary history and response to thiamine administration. A 5‐year‐old neutered male Maltese Terrier dog presented with an acute onset of seizures and generalized ataxia. The dog was exclusively fed boiled sweet potato (Ipomoea batatas) as a primary diet source for 4 weeks. MR findings and hyperlactatemic conditions were consistent with thiamine deficiency, and the diagnosis was confirmed by measuring thiamine concentrations in blood using high‐performance liquid chromatography (HPLC). Appropriate thiamine supplementation and diet changes resulted in a rapid improvement in neurological signs. Repeated MR imaging 2 weeks after starting the treatment completely resolved the previously identified abnormalities, and repeated measurements of blood lactate and thiamine levels revealed complete recovery of the thiamine‐deficient status.
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Affiliation(s)
- Joong-Hyun Song
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju, Republic of Korea.,Department of Research Center, Dongnam Institute of Radiological & Medical Sciences, Busan, Republic of Korea
| | - Dong-In Jung
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju, Republic of Korea
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