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Uno Y, Yamato O, Yamazaki H. Transcript abundance of hepatic drug-metabolizing enzymes in two dog breeds compared with 14 species including humans. Drug Metab Pharmacokinet 2024; 55:101002. [PMID: 38452615 DOI: 10.1016/j.dmpk.2024.101002] [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: 12/02/2023] [Revised: 01/10/2024] [Accepted: 01/19/2024] [Indexed: 03/09/2024]
Abstract
Drug-metabolizing enzymes are important in drug development and therapy, but have not been fully identified and characterized in many species, lines, and breeds. Liver transcriptomic data were analyzed for phase I cytochromes P450, flavin-containing monooxygenases, and carboxylesterases and phase II UDP-glucuronosyltransferases, sulfotransferases, and glutathione S-transferases. Comparisons with a variety of species (humans, rhesus macaques, African green monkeys, baboons, common marmosets, cattle, sheep, pigs, cats, dogs, rabbits, tree shrews, rats, mice, and chickens) revealed both general similarities and differences in the transcript abundances of drug-metabolizing enzymes. Similarly, Beagle and Shiba dogs were examined by next-generation sequencing (RNA-seq). Consequently, no substantial differences in transcript abundance were noted in different breeds of pigs and dogs and in different lines of mice and rats. Therefore, the expression profiles of hepatic drug-metabolizing enzyme transcripts appear to be similar in Shiba and Beagle dogs and pig breeds and the rat and mouse lines analyzed, although some differences were found in other species.
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Affiliation(s)
- Yasuhiro Uno
- Joint Faculty of Veterinary Medicine, Kagoshima University, Kagoshima-city, Kagoshima, 890-0065, Japan.
| | - Osamu Yamato
- Joint Faculty of Veterinary Medicine, Kagoshima University, Kagoshima-city, Kagoshima, 890-0065, Japan
| | - Hiroshi Yamazaki
- Showa Pharmaceutical University, Machida, Tokyo, 194-8543, Japan.
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Anturaniemi J, Zaldívar-López S, Savelkoul HFJ, Elo K, Hielm-Björkman A. The Effect of Atopic Dermatitis and Diet on the Skin Transcriptome in Staffordshire Bull Terriers. Front Vet Sci 2020; 7:552251. [PMID: 33178726 PMCID: PMC7596200 DOI: 10.3389/fvets.2020.552251] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Accepted: 09/08/2020] [Indexed: 12/22/2022] Open
Abstract
Canine atopic dermatitis (CAD) has a hereditary basis that is modified by interactions with the environment, including diet. Differentially expressed genes in non-lesional skin, determined by RNA sequencing before and after a dietary intervention, were compared between dogs with naturally occurring CAD (n = 4) and healthy dogs (n = 4). The dogs were fed either a common commercial heat-processed high carbohydrate food (kibble diet) (n = 4), or a non-processed high fat food (raw meat-based diet) (n = 4). At the end of the diet intervention, 149 differentially expressed transcripts were found between the atopic and healthy dogs. The main canonical pathways altered by the dysregulation of these genes were angiopoietin signaling, epidermal growth factor signaling, activation of angiogenesis, and alterations in keratinocyte proliferation and lipid metabolism. On the other hand, 33 differently expressed transcripts were found between the two diet groups, of which 8 encode genes that are annotated in the current version of the dog genome: immunoglobulin heavy constant mu (IGHM), immunoglobulin lambda-like polypeptide 5 (IGLL5), B-cell antigen receptor complex-associated protein beta chain (CD79B), polymeric immunoglobulin receptor (PIGR), cystathionine β-synthase (CBS), argininosuccinate synthase 1 (ASS1), secretory leukocyte peptidase inhibitor (SLPI), and mitochondrial ribosome recycling factor (MRRF). All genes were upregulated in the raw diet group. In conclusion the findings of this study suggest alterations in lipid and keratinocyte metabolism as well as angiogenesis in the skin of atopic dogs. Additionally, a possible enhancement of innate immunity and decrease in oxidative stress was seen in raw food fed dogs, which could have an important role in preventing hypersensitivities and disturbed immunity at young age.
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Affiliation(s)
- Johanna Anturaniemi
- Faculty of Veterinary Medicine, Department of Equine and Small Animal Medicine, University of Helsinki, Helsinki, Finland
| | - Sara Zaldívar-López
- Genomics and Animal Breeding Group, Department of Genetics, Faculty of Veterinary Medicine, University of Córdoba, Córdoba, Spain
| | - Huub F J Savelkoul
- Cell Biology and Immunology Group, Wageningen University, Wageningen, Netherlands
| | - Kari Elo
- Faculty of Agriculture and Forestry, Department of Agricultural Sciences, University of Helsinki, Helsinki, Finland
| | - Anna Hielm-Björkman
- Faculty of Veterinary Medicine, Department of Equine and Small Animal Medicine, University of Helsinki, Helsinki, Finland
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PCK1 Deficiency Shortens the Replicative Lifespan of Saccharomyces cerevisiae through Upregulation of PFK1. BIOMED RESEARCH INTERNATIONAL 2020; 2020:3858465. [PMID: 32104690 PMCID: PMC7037958 DOI: 10.1155/2020/3858465] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Revised: 12/29/2019] [Accepted: 01/11/2020] [Indexed: 12/25/2022]
Abstract
The cytosolic isozyme of phosphoenolpyruvate carboxykinase (PCK1) was the first rate-limiting enzyme in the gluconeogenesis pathway, which exerted a critical role in maintaining the blood glucose levels. PCK1 has been established to be involved in various physiological and pathological processes, including glucose metabolism, lipid metabolism, diabetes, and tumorigenesis. Nonetheless, the association of PCK1 with aging process and the detailed underlying mechanisms of PCK1 on aging are still far to be elucidated. Hence, we herein constructed the PCK1-deficient (pck1Δ) and PCK1 overexpression (PCK1 OE) Saccharomyces cerevisiae. The results unveiled that PCK1 deficiency significantly shortened the replicative lifespan (RLS) in the S. cerevisiae, while overexpression of PCK1 prolonged the RLS. Additionally, we noted that the ROS level was significantly enhanced in PCK1-deficient strain and decreased in PCK1 OE strain. Then, a high throughput analysis by deep sequencing was performed in the pck1Δ and wild-type strains, in an attempt to shed light on the effect of PCK1 on the lifespan of aging process. The data showed that the most downregulated mRNAs were enriched in the regulatory pathways of glucose metabolism. Fascinatingly, among the differentially expressed mRNAs, PFK1 was one of the most upregulated genes, which was involved in the glycolysis process and ROS generation. Thus, we further constructed the pfk1Δpck1Δ strain by deletion of PFK1 in the PCK1-deficient strain. The results unraveled that pfk1Δpck1Δ strain significantly suppressed the ROS level and restored the RLS of pck1Δ strain. Taken together, our data suggested that PCK1 deficiency enhanced the ROS level and shortened the RLS of S. cerevisiae via PFK1.
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Pacheco GFE, Bortolin RC, Chaves PR, Moreira JCF, Kessler AM, Trevizan L. Effects of the consumption of polyunsaturated fatty acids on the oxidative status of adult dogs. J Anim Sci 2019; 96:4590-4598. [PMID: 30060203 DOI: 10.1093/jas/sky313] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Accepted: 07/28/2018] [Indexed: 01/20/2023] Open
Abstract
The present study evaluated the alterations of the oxidative stress markers in adult dogs fed with high levels of PUFA from the mixture of soybean oil enriched with docosahexaenoic acid (DHA) and supplemented with a natural algae-based antioxidant (AOX). Twelve healthy adult (2 years old) Beagle dogs (6 males and 6 females, 11.20 ± 1.92 kg BW), were distributed in 2 completely randomized blocks design and fed with 4 experimental diets coated with 2 lipid sources: saturated (13% bovine tallow) or unsaturated (13% soybean oil enriched with DHA), supplemented or not with 500 mg of AOX for 4 wk, intercalated with a 4-wk adaptation period. Blood samples were collected on days 0, 15, and 30 of each block. Glutathione peroxidase (GSH-Px), superoxide dismutase (SOD), sulfhydryl group (SH), protein carbonylation, thiobarbituric acid reactive substances (TBARS), and total reactive antioxidant potential (TRAP) were evaluated in the serum, while GSH-Px, SOD, glutathione S-transferase (GST), catalase (CAT), SH, and TBARS were measured in erythrocytes. There was no significant difference in most of the oxidative markers evaluated. In contrast, GST activity in erythrocytes was greater in the animals that consumed the diets coated with bovine tallow compared to dogs that consumed diets coated with soybean oil enriched with DHA (P < 0.05). Serum from dogs fed on diets supplemented with AOX presented greater TRAP values (P < 0.05). These data demonstrate that the concentrations of unsaturated fatty acids (UNS) used in the diets for dogs were not sufficient to cause large changes in the oxidative status. It was not possible to evaluate the efficiency of the natural antioxidant in maintaining the oxidative balance of the animals as it appears that the oxidative status of the dogs was not challenged by the unsaturated diets. Our findings also suggest that dogs, as descendants from carrion carnivores, may have some natural protection against oxidation.
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Affiliation(s)
- Gabriel F E Pacheco
- Department of Animal Science, Federal University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Rafael C Bortolin
- Department of Civil and Environmental Engineering, Universidad de La Costa, Barranquilla, Atlántico, Colombia
| | - Paloma R Chaves
- Department of Biochemistry - Institute of Basic Health Sciences of the Federal University of Rio Grande do Sul, Brazil
| | - José C F Moreira
- Department of Biochemistry - Institute of Basic Health Sciences of the Federal University of Rio Grande do Sul, Brazil
| | - Alexandre M Kessler
- Department of Animal Science, Federal University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Luciano Trevizan
- Department of Animal Science, Federal University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
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Feng Z, Hanson RW, Berger NA, Trubitsyn A. Reprogramming of energy metabolism as a driver of aging. Oncotarget 2017; 7:15410-20. [PMID: 26919253 PMCID: PMC4941250 DOI: 10.18632/oncotarget.7645] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2016] [Accepted: 02/11/2016] [Indexed: 12/15/2022] Open
Abstract
Aging is characterized by progressive loss of cellular function and integrity. It has been thought to be driven by stochastic molecular damage. However, genetic and environmental maneuvers enhancing mitochondrial function or inhibiting glycolysis extend lifespan and promote healthy aging in many species. In post-fertile Caenorhabditis elegans, a progressive decline in phosphoenolpyruvate carboxykinase with age, and a reciprocal increase in pyruvate kinase shunt energy metabolism from oxidative metabolism to anaerobic glycolysis. This reduces the efficiency and total of energy generation. As a result, energy-dependent physical activity and other cellular functions decrease due to unmatched energy demand and supply. In return, decrease in physical activity accelerates this metabolic shift, forming a vicious cycle. This metabolic event is a determinant of aging, and is retarded by caloric restriction to counteract aging. In this review, we summarize these and other evidence supporting the idea that metabolic reprogramming is a driver of aging. We also suggest strategies to test this hypothesis
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Affiliation(s)
- Zhaoyang Feng
- Department of Pharmacology, School of Medicine, Case Western Reserve University, Cleveland, OH, USA
| | - Richard W Hanson
- Department of Biochemistry, School of Medicine, Case Western Reserve University, Cleveland, OH, USA.,Case Comprehensive Cancer Center, School of Medicine, Case Western Reserve University, Cleveland, OH, USA
| | - Nathan A Berger
- Department of Biochemistry, School of Medicine, Case Western Reserve University, Cleveland, OH, USA.,Case Comprehensive Cancer Center, School of Medicine, Case Western Reserve University, Cleveland, OH, USA.,Department of Medicine, School of Medicine, Case Western Reserve University, Cleveland, OH, USA
| | - Alexander Trubitsyn
- Institute of Biology and Soil Sciences of Far Eastern Brach of Russian Academy of Science, Vladivostok, Russia
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Abstract
Canine hepatopathies, both congenital and acquired, arise from an interaction between genes and environment. Many show increased breed prevalences. This article reviews the current understanding on breed predispositions for congenital portosystemic shunts; microvascular dysplasia and portal vein hypoplasia; ductal plate abnormalities (congenital hepatic fibrosis and Caroli disease); chronic hepatitis (both copper associated and idiopathic); vacuolar hepatopathies; and gallbladder mucocele. Although all these diseases can occur in many breeds and crossbreeds, understanding breed predispositions helps recognition and will guide future research to improve understanding of causes and treatments.
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Affiliation(s)
- Penny Watson
- Department of Veterinary Medicine, Queen's Veterinary School Hospital, University of Cambridge, Madingley Road, Cambridge CB3 0ES, UK.
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de Godoy MR, Hervera M, Swanson KS, Fahey GC. Innovations in Canine and Feline Nutrition: Technologies for Food and Nutrition Assessment. Annu Rev Anim Biosci 2016; 4:311-33. [DOI: 10.1146/annurev-animal-021815-111414] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Pet owners have increasing concerns about the nutrition of their pets, and they desire foods and treats that are safe, traceable, and of high nutritive value. To meet these high expectations, detailed chemical composition characterization of ingredients well beyond that provided by proximate analysis will be required, as will information about host physiology and metabolism. Use of faster and more precise analytical methodology and novel technologies that have the potential to improve pet food safety and quality will be implemented. In vitro and in vivo assays will continue to be used as screening tools to evaluate nutrient quality and adequacy in novel ingredients prior to their use in animal diets. The use of molecular and high-throughput technologies allows implementation of noninvasive studies in dogs and cats to investigate the impact of dietary interventions by using systems biology approaches. These approaches may further improve the health and longevity of pets.
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Affiliation(s)
- Maria R.C. de Godoy
- Department of Animal Sciences, University of Illinois, Urbana, Illinois 61801;, ,
| | | | - Kelly S. Swanson
- Department of Animal Sciences, University of Illinois, Urbana, Illinois 61801;, ,
| | - George C. Fahey
- Department of Animal Sciences, University of Illinois, Urbana, Illinois 61801;, ,
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Bellows J, Colitz CMH, Daristotle L, Ingram DK, Lepine A, Marks SL, Sanderson SL, Tomlinson J, Zhang J. Common physical and functional changes associated with aging in dogs. J Am Vet Med Assoc 2016; 246:67-75. [PMID: 25517328 DOI: 10.2460/javma.246.1.67] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- Jan Bellows
- Pets Dental, 17100 Royal Palm Blvd, Weston, FL 33326
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9
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Yuan Y, Hakimi P, Kao C, Kao A, Liu R, Janocha A, Boyd-Tressler A, Hang X, Alhoraibi H, Slater E, Xia K, Cao P, Shue Q, Ching TT, Hsu AL, Erzurum SC, Dubyak GR, Berger NA, Hanson RW, Feng Z. Reciprocal Changes in Phosphoenolpyruvate Carboxykinase and Pyruvate Kinase with Age Are a Determinant of Aging in Caenorhabditis elegans. J Biol Chem 2016; 291:1307-19. [PMID: 26631730 PMCID: PMC4714217 DOI: 10.1074/jbc.m115.691766] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2015] [Revised: 11/30/2015] [Indexed: 01/01/2023] Open
Abstract
Aging involves progressive loss of cellular function and integrity, presumably caused by accumulated stochastic damage to cells. Alterations in energy metabolism contribute to aging, but how energy metabolism changes with age, how these changes affect aging, and whether they can be modified to modulate aging remain unclear. In locomotory muscle of post-fertile Caenorhabditis elegans, we identified a progressive decrease in cytosolic phosphoenolpyruvate carboxykinase (PEPCK-C), a longevity-associated metabolic enzyme, and a reciprocal increase in glycolytic pyruvate kinase (PK) that were necessary and sufficient to limit lifespan. Decline in PEPCK-C with age also led to loss of cellular function and integrity including muscle activity, and cellular senescence. Genetic and pharmacologic interventions of PEPCK-C, muscle activity, and AMPK signaling demonstrate that declines in PEPCK-C and muscle function with age interacted to limit reproductive life and lifespan via disrupted energy homeostasis. Quantifications of metabolic flux show that reciprocal changes in PEPCK-C and PK with age shunted energy metabolism toward glycolysis, reducing mitochondrial bioenergetics. Last, calorie restriction countered changes in PEPCK-C and PK with age to elicit anti-aging effects via TOR inhibition. Thus, a programmed metabolic event involving PEPCK-C and PK is a determinant of aging that can be modified to modulate aging.
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Affiliation(s)
| | | | - Clara Kao
- From the Departments of Pharmacology
| | | | - Ruifu Liu
- From the Departments of Pharmacology
| | - Allison Janocha
- the Department of Pathobiology, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, Ohio 44195
| | | | - Xi Hang
- From the Departments of Pharmacology, the School of Pharmacy, Suzhou Health College, Suzhou, Jiangsu 215009, China, and
| | | | | | - Kevin Xia
- From the Departments of Pharmacology
| | | | | | - Tsui-Ting Ching
- the Departments of Internal Medicine, Division of Geriatric Medicine, and
| | - Ao-Lin Hsu
- the Departments of Internal Medicine, Division of Geriatric Medicine, and Molecular and Integrative Physiology, University of Michigan, Ann Arbor, Michigan 48109
| | - Serpil C Erzurum
- the Department of Pathobiology, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, Ohio 44195
| | - George R Dubyak
- From the Departments of Pharmacology, Physiology and Biophysics, and
| | - Nathan A Berger
- Departments of Biochemistry and Medicine, School of Medicine, Case Western Reserve University, Cleveland, Ohio 44106
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Blanchard H, Boulier-Monthéan N, Legrand P, Pédrono F. The 51 kDa FADS3 is secreted in the ECM of hepatocytes and blood in rat. J Cell Biochem 2014; 115:199-207. [PMID: 23966218 DOI: 10.1002/jcb.24651] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2012] [Accepted: 08/14/2013] [Indexed: 11/07/2022]
Abstract
The fatty acid desaturase (Fads) cluster is composed of three genes encoding for the Δ5- and Δ6-desaturases and FADS3. The two former proteins are involved in the fatty acid biosynthesis; the latter one shares a high sequence identity but has still no attributed function. In a previous work performed in rat, we described three isoforms of FADS3 expressed in a tissue-dependent manner. In the present study, we demonstrated a specific subcellular targeting depending on the isoform. In cultured hepatocytes, which mainly expressed the 51 kDa protein, FADS3 was unexpectedly present in the cytosolic fraction, but was also secreted in the extracellular matrix on fibronectin-containing fibers. The secretion pathway was investigated and we determined the presence of exosome-like vesicles on the FADS3-stained fibers. In parallel, FADS3 was detected in blood of hepatic vessel, and particularly in serum. In conclusion, this study demonstrated a very specific intra- and extracellular location of FADS3 in comparison with the Δ5- and Δ6-desaturases, suggesting a unique function for this putative desaturase, even if no activity has been yet identified neither in the extracellular matrix of hepatocytes nor in serum.
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Affiliation(s)
- Hélène Blanchard
- Laboratoire de Biochimie et Nutrition Humaine, INRA USC 2012, Agrocampus Ouest, F-35042, Rennes, France
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Abstract
Aging is a normal process characterized by a variety of physiologic changes. Geriatric dogs are also more likely to be afflicted with certain disease conditions. Both normal and abnormal physiologic changes associated with aging in the dog may be amenable to nutritional intervention. Specific alterations in nutrients or in dietary characteristics can be beneficial; however, these are best done in the context of an individualized nutritional assessment and monitoring paradigm.
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Affiliation(s)
- Jennifer A Larsen
- VM: Molecular Biosciences, School of Veterinary Medicine, University of California, Davis, One Shields Avenue, Davis, CA 95616, USA.
| | - Amy Farcas
- Department of Clinical Studies, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
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Grützner N, Heilmann RM, Bridges CS, Suchodolski JS, Steiner JM. Serum concentrations of canine alpha1-proteinase inhibitor in cobalamin-deficient Yorkshire Terrier dogs. J Vet Diagn Invest 2013; 25:376-85. [DOI: 10.1177/1040638713485960] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Fecal canine alpha1-proteinase inhibitor (cα1-PI) concentration has been reported to be increased in dogs with protein-losing enteropathy due to the loss of cα1-PI into the gastrointestinal tract. A chronic loss of cα1-PI may theoretically deplete serum cα1-PI, potentially altering the proteinase-to-proteinase inhibitor balance. Protein-losing enteropathy has been reported to occur frequently in certain dog breeds such as Yorkshire Terriers and to be associated with hypocobalaminemia. The objective was to compare serum cα1-PI concentrations in Yorkshire Terriers with and without cobalamin (COB) deficiency. Serum samples from 52 COB-deficient and 69 normocobalaminemic Yorkshire Terriers, which had been submitted to the Gastrointestinal Laboratory (2008–2011; College Station, TX), were included retrospectively. Serum cα1-PI concentrations were measured using an in-house radioimmunoassay and compared between Yorkshire Terriers with and without COB deficiency using a Mann–Whitney U test. A Fisher exact test was used to evaluate whether a decreased serum cα1-PI concentration is associated with COB deficiency in Yorkshire Terriers. Serum cα1-PI concentrations were significantly lower in COB-deficient Yorkshire Terriers (median: 1,016 mg/l, range: 315–3,945 mg/l) than in normocobalaminemic Yorkshire Terriers (median: 1,665 mg/l, range: 900–2,970 mg/l; P < 0.0001). One-fourth ( n = 13) of the COB-deficient Yorkshire Terriers had a serum cα1-PI concentration below the lower limit of the reference interval (<732 mg/l), and COB deficiency was associated with decreased serum cα1-PI concentrations ( P < 0.0001). In the current study, serum cα1-PI concentrations are significantly lower in COB-deficient Yorkshire Terriers when compared to normocobalaminemic Yorkshire Terriers. Further studies are needed to determine the functional and potential prognostic implications of serum cα1-PI concentrations in dogs with gastrointestinal disease.
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Affiliation(s)
- Niels Grützner
- Gastrointestinal Laboratory, Department of Small Animal Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX
| | - Romy M. Heilmann
- Gastrointestinal Laboratory, Department of Small Animal Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX
| | - Cory S. Bridges
- Gastrointestinal Laboratory, Department of Small Animal Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX
| | - Jan S. Suchodolski
- Gastrointestinal Laboratory, Department of Small Animal Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX
| | - Jörg M. Steiner
- Gastrointestinal Laboratory, Department of Small Animal Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX
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Langfelder P, Castellani LW, Zhou Z, Paul E, Davis R, Schadt EE, Lusis AJ, Horvath S, Mehrabian M. A systems genetic analysis of high density lipoprotein metabolism and network preservation across mouse models. Biochim Biophys Acta Mol Cell Biol Lipids 2011; 1821:435-47. [PMID: 21807117 DOI: 10.1016/j.bbalip.2011.07.014] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2011] [Revised: 07/14/2011] [Accepted: 07/15/2011] [Indexed: 01/22/2023]
Abstract
We report a systems genetic analysis of high density lipoprotein (HDL) levels in an F2 intercross between inbred strains CAST/EiJ and C57BL/6J. We previously showed that there are dramatic differences in HDL metabolism in a cross between these strains, and we now report co-expression network analysis of HDL that integrates global expression data from liver and adipose with relevant metabolic traits. Using data from a total of 293 F2 intercross mice, we constructed weighted gene co-expression networks and identified modules (subnetworks) associated with HDL and clinical traits. These were examined for genes implicated in HDL levels based on large human genome-wide associations studies (GWAS) and examined with respect to conservation between tissue and sexes in a total of 9 data sets. We identify genes that are consistently ranked high by association with HDL across the 9 data sets. We focus in particular on two genes, Wfdc2 and Hdac3, that are located in close proximity to HDL QTL peaks where causal testing indicates that they may affect HDL. Our results provide a rich resource for studies of complex metabolic interactions involving HDL. This article is part of a Special Issue entitled Advances in High Density Lipoprotein Formation and Metabolism: A Tribute to John F. Oram (1945-2010).
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Affiliation(s)
- Peter Langfelder
- Department of Human Genetics, David Geffen School of Medicine at UCLA, Gonda (Goldschmied) Neuroscience and Genetics Research Center, 695 Charles E. Young Drive South, Box 708822, Los Angeles, CA 90095-7088, USA.
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