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van Ryssen JBJ, Webb EC, Myburgh JG. Liver moisture content in animals and possible causes of variations in hepatic dry matter content. J S Afr Vet Assoc 2023; 94:7-15. [PMID: 37358320 DOI: 10.36303/jsava.518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/27/2023] Open
Abstract
The concentration of trace elements in the liver is used as an indicator of the mineral nutritional status of an animal, as a benchmark of environmental mineral exposure, to follow the metabolism of an element in the body and for various other purposes. Concentrations are expressed on a wet (fresh) liver basis or on a dry liver basis. From a literature search and evidence from an analytical laboratory, large variations (varying from < 20% to > 40%) have been recorded on the percentage of moisture in the livers of ruminants. Such variations potentially compromise the interpretation of results on mineral concentrations in livers, and preclude robust comparisons between studies. Among the factors that can affect the moisture content of livers are: inconsistencies in sampling and preparation of liver samples; exposure to toxic substances; ill-health of the animal; fat content of the liver; and age of the animal. It was estimated that the mean dry matter (DM) content of the livers of healthy ungulates containing less than 1% liver fat is between 27.5% and 28.5%, and on a fat-free basis 25-26% DM. For routine analyses of liver samples it is suggested that to limit variations owing to differences in liver moisture content, liver mineral concentrations should be expressed on a DM basis, and for in-depth scientific studies on mineral metabolism on a dry, fat-free basis. However, if mineral concentrations are expressed on a wet basis, it is advisable to supply the liver DM content as well.
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Affiliation(s)
- J B J van Ryssen
- Department of Animal Science, Faculty of Natural and Agricultural Sciences, University of Pretoria, South Africa
| | - E C Webb
- Department of Animal Science, Faculty of Natural and Agricultural Sciences, University of Pretoria, South Africa
| | - J G Myburgh
- Department of Paraclinical Sciences, Faculty of Veterinary Science, University of Pretoria, South Africa
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Nolte W, Weikard R, Albrecht E, Hammon HM, Kühn C. Metabogenomic analysis to functionally annotate the regulatory role of long non-coding RNAs in the liver of cows with different nutrient partitioning phenotype. Genomics 2021; 114:202-214. [PMID: 34923089 DOI: 10.1016/j.ygeno.2021.12.004] [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: 11/07/2020] [Revised: 07/26/2021] [Accepted: 12/13/2021] [Indexed: 11/17/2022]
Abstract
Long non-coding RNAs (lncRNAs) hold gene regulatory potential, but require substantial further functional annotation in livestock. Applying two metabogenomic approaches by combining transcriptomic and metabolomic analyses, we aimed to identify lncRNAs with potential regulatory function for divergent nutrient partitioning of lactating crossbred cows and to establish metabogenomic interaction networks comprising metabolites, genes and lncRNAs. Through correlation analysis of lncRNA expression with transcriptomic and metabolomic data, we unraveled lncRNAs that have a putative regulatory role in energy and lipid metabolism, the urea and tricarboxylic acid cycles, and gluconeogenesis. Especially FGF21, which correlated with a plentitude of differentially expressed genes, differentially abundant metabolites, as well as lncRNAs, suggested itself as a key metabolic regulator. Notably, lncRNAs in close physical proximity to coding-genes as well as lncRNAs with natural antisense transcripts appear to perform a fine-tuning function in gene expression involved in metabolic pathways associated with different nutrient partitioning phenotypes.
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Affiliation(s)
- Wietje Nolte
- Institute of Genome Biology, Research Institute for Farm Animal Biology (FBN), 18196 Dummerstorf, Germany
| | - Rosemarie Weikard
- Institute of Genome Biology, Research Institute for Farm Animal Biology (FBN), 18196 Dummerstorf, Germany
| | - Elke Albrecht
- Institute of Muscle Biology and Growth, Research Institute for Farm Animal Biology (FBN), 18196 Dummerstorf, Germany
| | - Harald M Hammon
- Institute of Nutritional Physiology "Oskar Kellner", Research Institute for Farm Animal Biology (FBN), 18196 Dummerstorf, Germany
| | - Christa Kühn
- Institute of Genome Biology, Research Institute for Farm Animal Biology (FBN), 18196 Dummerstorf, Germany; Faculty of Agricultural and Environmental Sciences, University Rostock, 18059 Rostock, Germany.
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Kobayashi T, Iwata Y, Nakade Y, Wada T. Significance of the Gut Microbiota in Acute Kidney Injury. Toxins (Basel) 2021; 13:369. [PMID: 34067285 PMCID: PMC8224769 DOI: 10.3390/toxins13060369] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 05/10/2021] [Accepted: 05/19/2021] [Indexed: 02/07/2023] Open
Abstract
Recent studies have revealed that the gut microbiota plays a crucial role in maintaining a healthy, as well as diseased condition. Various organs and systems, including the kidney, are affected by the gut microbiota. While the impacts of the gut microbiota have been reported mainly on chronic kidney disease, acute kidney injury (AKI) is also affected by the intestinal environment. In this review, we discussed the pathogenesis of AKI, highlighting the relation to the gut microbiota. Since there is no established treatment for AKI, new treatments for AKI are highly desired. Some kinds of gut bacteria and their metabolites reportedly have protective effects against AKI. Current studies provide new insights into the role of the gut microbiota in the pathogenesis of AKI.
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Affiliation(s)
- Taku Kobayashi
- Department of Nephrology and Laboratory Medicine, Kanazawa University, Kanazawa 920-1192, Japan; (T.K.); (Y.N.); (T.W.)
| | - Yasunori Iwata
- Department of Nephrology and Laboratory Medicine, Kanazawa University, Kanazawa 920-1192, Japan; (T.K.); (Y.N.); (T.W.)
- Division of Infection Control, Kanazawa University Hospital, Kanazawa 920-1192, Japan
| | - Yusuke Nakade
- Department of Nephrology and Laboratory Medicine, Kanazawa University, Kanazawa 920-1192, Japan; (T.K.); (Y.N.); (T.W.)
| | - Takashi Wada
- Department of Nephrology and Laboratory Medicine, Kanazawa University, Kanazawa 920-1192, Japan; (T.K.); (Y.N.); (T.W.)
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Stavropoulou E, Kantartzi K, Tsigalou C, Aftzoglou K, Voidarou C, Konstantinidis T, Chifiriuc MC, Thodis E, Bezirtzoglou E. Microbiome, Immunosenescence, and Chronic Kidney Disease. Front Med (Lausanne) 2021; 8:661203. [PMID: 33816535 PMCID: PMC8017168 DOI: 10.3389/fmed.2021.661203] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Accepted: 02/23/2021] [Indexed: 01/10/2023] Open
Abstract
The gut microbiome is known as an important predictive tool for perceiving characteristic shifts in disease states. Multiple renal diseases and pathologies seem to be associated with gut dysbiosis which directly affects host homeostasis. The gastrointestinal-kidney dialogue confers interesting information about the pathogenesis of multiple kidney diseases. Moreover, aging is followed by specific shifts in the human microbiome, and gradual elimination of physiological functions predisposes the microbiome to inflammaging, sarcopenia, and disease. Aging is characterized by a microbiota with an abundance of disease-associated pathobionts. Multiple factors such as the immune system, environment, medication, diet, and genetic endowment are involved in determining the age of the microbiome in health and disease. Our present review promotes recently acquired knowledge and is expected to inspire researchers to advance studies and investigations on the involved pathways of the gut microbiota and kidney axis.
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Affiliation(s)
- Elisavet Stavropoulou
- CHUV (Centre Hospitalier Universitaire Vaudois), Rue du Bugnon, Lausanne, Switzerland.,Department of Infectious Diseases, Central Institute, Valais Hospital, Sion, Switzerland
| | - Konstantia Kantartzi
- Nephrology Clinic, Department of Medicine, Democritus University of Thrace, Alexandroupoli, Greece
| | - Christina Tsigalou
- Laboratory of Microbiology, Department of Medicine, Democritus University of Thrace, Alexandroupoli, Greece
| | | | | | | | - Mariana Carmen Chifiriuc
- Laboratory of Microbiology, Faculty of Biology, The Research Institute of the University of Bucharest (ICUB), University of Bucharest, Bucharest, Romania
| | - Elias Thodis
- Nephrology Clinic, Department of Medicine, Democritus University of Thrace, Alexandroupoli, Greece
| | - Eugenia Bezirtzoglou
- Laboratory of Hygiene and Environmental Protection, Department of Medicine, Democritus University of Thrace, Alexandroupoli, Greece
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Stavropoulou E, Kantartzi K, Tsigalou C, Konstantinidis T, Romanidou G, Voidarou C, Bezirtzoglou E. Focus on the Gut-Kidney Axis in Health and Disease. Front Med (Lausanne) 2021; 7:620102. [PMID: 33553216 PMCID: PMC7859267 DOI: 10.3389/fmed.2020.620102] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Accepted: 12/16/2020] [Indexed: 12/11/2022] Open
Abstract
The recent new developments in technology with culture-independent techniques including genome sequencing methodologies shed light on the identification of microbiota bacterial species and their role in health and disease. Microbiome is actually reported as an important predictive tool for evaluating characteristic shifts in case of disease. Our present review states the development of different renal diseases and pathologies linked to the intestinal dysbiosis, which impacts on host homeostasis. The gastrointestinal–kidney dialogue provides intriguing features in the pathogenesis of several renal diseases. Without any doubt, investigation of this interconnection consists one of the most cutting-edge areas of research with potential implications on our health.
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Affiliation(s)
- Elisavet Stavropoulou
- Centre Hospitalier Universitaire Vaudois (CHUV), Lausanne, Switzerland.,Department of Infectious Diseases, Central Institute, Valais Hospital, Sion, Switzerland
| | - Konstantia Kantartzi
- Department of Medicine, Democritus University of Thrace, Alexandroupolis, Greece
| | - Christina Tsigalou
- Department of Medicine, Democritus University of Thrace, Alexandroupolis, Greece
| | | | | | | | - Eugenia Bezirtzoglou
- Department of Medicine, Democritus University of Thrace, Alexandroupolis, Greece
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Abstract
The recent surge in research on the intestinal microbiota has greatly changed our understanding of human biology. Significant technical advances in DNA sequencing analysis and its application to metagenomics and metatranscriptomics has profoundly enhanced our ability to quantify and track complex microbial communities and to begin understanding their impact on human health and disease. This has led to a better understanding of the relationships between the intestinal microbiome and renal physiology/pathophysiology. In this review, we discuss the interactions between intestinal microbiota and kidney. We focus on select aspects including the intestinal barrier, immunologic and soluble mediators of microbiome effects, and effects of dysbiosis on acute kidney injury. Relevant studies on microbiome changes in other renal diseases are highlighted. We also introduce potential mechanisms of intervention with regard to gut microbiota in renal diseases.
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Ye L, Cao Z, Lai X, Wang W, Guo Z, Yan L, Wang Y, Shi Y, Zhou N. Niacin fine-tunes energy homeostasis through canonical GPR109A signaling. FASEB J 2018; 33:4765-4779. [PMID: 30596513 DOI: 10.1096/fj.201801951r] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The incidence of overweight and obesity has become a global public health problem, constituting a major risk factor for numerous comorbidities. Despite tremendous efforts, effective pharmacological agents for the treatment of obesity are still limited. Here, we showed that in contrast to lactate receptor GPR81, niacin receptor GPR109A-deficient mice had progressive weight gain and hepatic fat accumulation. Using high-fat diet-induced mouse model of obesity, we demonstrated that niacin treatment apparently protected against obesity without affecting food intake in wild-type mice but not in GPR109A-deficient mice. Further investigation showed that niacin treatment led to a remarkable inhibition of hepatic de novo lipogenesis. Additionally, we demonstrated that niacin treatment triggered brown adipose tissue and/or white adipose tissue thermogenic activity via activation of GPR109A. Moreover, we observed that mice exposed to niacin exhibited a dramatic decrease in intestinal absorption of sterols and fatty acids. Taken together, our findings demonstrate that acting on GPR109A, niacin shows the potential to maintain energy homeostasis through multipathways, representing a potential approach to the treatment of obesity, diabetes and cardiovascular disease.-Ye, L., Cao, Z., Lai, X., Wang, W., Guo, Z., Yan, L., Wang, Y., Shi, Y., Zhou, N. Niacin fine-tunes energy homeostasis through canonical GPR109A signaling.
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Affiliation(s)
- Lingyan Ye
- Institute of Biochemistry, College of Life Sciences, Zijingang Campus, Zhejiang University, Hangzhou, China
| | - Zheng Cao
- Institute of Biochemistry, College of Life Sciences, Zijingang Campus, Zhejiang University, Hangzhou, China
| | - Xiangru Lai
- Institute of Biochemistry, College of Life Sciences, Zijingang Campus, Zhejiang University, Hangzhou, China
| | - Weiwei Wang
- Institute of Biochemistry, College of Life Sciences, Zijingang Campus, Zhejiang University, Hangzhou, China
| | - Zhiqiang Guo
- Institute of Biochemistry, College of Life Sciences, Zijingang Campus, Zhejiang University, Hangzhou, China
| | - Lili Yan
- Institute of Biochemistry, College of Life Sciences, Zijingang Campus, Zhejiang University, Hangzhou, China
| | - Yuyan Wang
- Institute of Biochemistry, College of Life Sciences, Zijingang Campus, Zhejiang University, Hangzhou, China
| | - Ying Shi
- Institute of Biochemistry, College of Life Sciences, Zijingang Campus, Zhejiang University, Hangzhou, China
| | - Naiming Zhou
- Institute of Biochemistry, College of Life Sciences, Zijingang Campus, Zhejiang University, Hangzhou, China
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Kesser J, Korst M, Koch C, Romberg FJ, Rehage J, Müller U, Schmicke M, Eder K, Hammon H, Sadri H, Sauerwein H. Different milk feeding intensities during the first 4 weeks of rearing dairy calves: Part 2: Effects on the metabolic and endocrine status during calfhood and around the first lactation. J Dairy Sci 2017; 100:3109-3125. [DOI: 10.3168/jds.2016-11595] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2016] [Accepted: 10/18/2016] [Indexed: 11/19/2022]
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Reverchon M, Ramé C, Cognié J, Briant E, Elis S, Guillaume D, Dupont J. Resistin in dairy cows: plasma concentrations during early lactation, expression and potential role in adipose tissue. PLoS One 2014; 9:e93198. [PMID: 24675707 PMCID: PMC3968062 DOI: 10.1371/journal.pone.0093198] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2013] [Accepted: 03/03/2014] [Indexed: 11/19/2022] Open
Abstract
Resistin is an adipokine that has been implicated in energy metabolism regulation in rodents but has been little studied in dairy cows. We determined plasma resistin concentrations in early lactation in dairy cows and investigated the levels of resistin mRNA and protein in adipose tissue and the phosphorylation of several components of insulin signaling pathways one week post partum (1 WPP) and at five months of gestation (5 MG). We detected resistin in mature bovine adipocytes and investigated the effect of recombinant bovine resistin on lipolysis in bovine adipose tissue explants. ELISA showed that plasma resistin concentration was low before calving, subsequently increasing and reaching a peak at 1 WPP, decreasing steadily thereafter to reach pre-calving levels at 6 WPP. Plasma resistin concentration was significantly positively correlated with plasma non esterified fatty acid (NEFA) levels and negatively with milk yield, dry matter intake and energy balance between WPP1 to WPP22. We showed, by quantitative RT-PCR and western blotting, that resistin mRNA and protein levels in adipose tissue were higher at WPP1 than at 5 MG. The level of phosphorylation of several early and downstream insulin signaling components (IRβ, IRS-1, IRS-2, Akt, MAPK ERK1/2, P70S6K and S6) in adipose tissue was also lower at 1 WPP than at 5 MG. Finally, we showed that recombinant bovine resistin increased the release of glycerol and mRNA levels for ATGL (adipose triglyceride lipase) and HSL (hormone-sensitive lipase) in adipose tissue explants. Overall, resistin levels were high in the plasma and adipose tissue and were positively correlated with NEFA levels after calving. Resistin is expressed in bovine mature adipocytes and promotes lipid mobilization in adipose explants in vitro.
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Affiliation(s)
- Maxime Reverchon
- INRA, UMR 7247 Physiologie de la Reproduction et des Comportements, Nouzilly, France
- CNRS, UMR6175 Physiologie de la Reproduction et des Comportements, Nouzilly, France
- Université François Rabelais de Tours, Tours, France
- Institut Français du Cheval, Nouzilly, France
| | - Christelle Ramé
- INRA, UMR 7247 Physiologie de la Reproduction et des Comportements, Nouzilly, France
- CNRS, UMR6175 Physiologie de la Reproduction et des Comportements, Nouzilly, France
- Université François Rabelais de Tours, Tours, France
- Institut Français du Cheval, Nouzilly, France
| | - Juliette Cognié
- INRA, UMR 7247 Physiologie de la Reproduction et des Comportements, Nouzilly, France
- CNRS, UMR6175 Physiologie de la Reproduction et des Comportements, Nouzilly, France
- Université François Rabelais de Tours, Tours, France
- Institut Français du Cheval, Nouzilly, France
| | - Eric Briant
- INRA, UMR 7247 Physiologie de la Reproduction et des Comportements, Nouzilly, France
- CNRS, UMR6175 Physiologie de la Reproduction et des Comportements, Nouzilly, France
- Université François Rabelais de Tours, Tours, France
- Institut Français du Cheval, Nouzilly, France
| | - Sébastien Elis
- INRA, UMR 7247 Physiologie de la Reproduction et des Comportements, Nouzilly, France
- CNRS, UMR6175 Physiologie de la Reproduction et des Comportements, Nouzilly, France
- Université François Rabelais de Tours, Tours, France
- Institut Français du Cheval, Nouzilly, France
| | - Daniel Guillaume
- INRA, UMR 7247 Physiologie de la Reproduction et des Comportements, Nouzilly, France
- CNRS, UMR6175 Physiologie de la Reproduction et des Comportements, Nouzilly, France
- Université François Rabelais de Tours, Tours, France
- Institut Français du Cheval, Nouzilly, France
| | - Joëlle Dupont
- INRA, UMR 7247 Physiologie de la Reproduction et des Comportements, Nouzilly, France
- CNRS, UMR6175 Physiologie de la Reproduction et des Comportements, Nouzilly, France
- Université François Rabelais de Tours, Tours, France
- Institut Français du Cheval, Nouzilly, France
- * E-mail:
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Saremi B, Winand S, Friedrichs P, Kinoshita A, Rehage J, Dänicke S, Häussler S, Breves G, Mielenz M, Sauerwein H. Longitudinal profiling of the tissue-specific expression of genes related with insulin sensitivity in dairy cows during lactation focusing on different fat depots. PLoS One 2014; 9:e86211. [PMID: 24465964 PMCID: PMC3897665 DOI: 10.1371/journal.pone.0086211] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2013] [Accepted: 12/09/2013] [Indexed: 01/13/2023] Open
Abstract
In dairy cows the milk associated energy output in early lactation exceeds the input via voluntary feed intake. To spare glucose for mammary lactose synthesis, peripheral insulin sensitivity (IS) is reduced and fat mobilization is stimulated. For these processes a link between IS and the endocrine functions of adipose tissue (AT) is likely; we thus aimed to characterise the mRNA expression from bovine AT derived proteins and receptors that are related to IS according to the literature in metabolically active tissues plus systemic IS throughout lactation. Conjugated linoleic acids (CLA) reduce milk fat thus decreasing the milk drain of energy and potentially dampening lipolysis, but may also affect IS. Subcutaneous (s.c.) AT and liver from pluriparous cows receiving either control fat or CLA supplement (100 g/day from 1 to 182 days in milk each) were biopsied covering week -3 to 36 relative to parturition. In an additional trial with primiparous cows treated analogously and slaughtered on days in milk 1, 42 or 105, samples from liver, udder, skeletal muscle and 3 visceral and 3 s.c. AT were obtained and assayed for mRNA abundance of adiponectin, its receptors, leptin, leptin receptor, PPARγ, PPARγ2, IL-6, and TNF-α. In pluriparous animals, the mRNA abundance of most of the target genes decreased after parturition in s.c. AT but increased in liver. In primiparous cows, AT depot specific differences were mostly related to retroperitoneal AT; adiponectin receptor 1 and TNF-α were affected predominantly. CLA effects in primiparous cows were largely limited to decreased PPARγ2 mRNA abundance in udder tissue. In pluriparous cows, insulin secretion was increased by CLA resulting in decreased systemic IS but without consistent changes in tissue target mRNA abundance. The temporal gene expression profiles from the adipokines and related receptors support their coactive function in adapting to the needs of lactation.
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Affiliation(s)
- Behnam Saremi
- Institute of Animal Science, Physiology and Hygiene Unit, University of Bonn, Bonn, Germany
| | - Sarah Winand
- Institute of Animal Science, Physiology and Hygiene Unit, University of Bonn, Bonn, Germany
| | - Paula Friedrichs
- Institute of Animal Science, Physiology and Hygiene Unit, University of Bonn, Bonn, Germany
| | - Asako Kinoshita
- Clinic for Cattle, University of Veterinary Medicine Hannover, Foundation, Hannover, Germany
| | - Jürgen Rehage
- Clinic for Cattle, University of Veterinary Medicine Hannover, Foundation, Hannover, Germany
| | - Sven Dänicke
- Institute of Animal Nutrition, Friedrich-Loeffler-Institute (FLI), Federal Research Institute for Animal Health, Braunschweig, Germany
| | - Susanne Häussler
- Institute of Animal Science, Physiology and Hygiene Unit, University of Bonn, Bonn, Germany
| | - Gerhard Breves
- Department of Physiology, University of Veterinary Medicine Hannover, Foundation, Hannover, Germany
| | - Manfred Mielenz
- Institute of Animal Science, Physiology and Hygiene Unit, University of Bonn, Bonn, Germany
| | - Helga Sauerwein
- Institute of Animal Science, Physiology and Hygiene Unit, University of Bonn, Bonn, Germany
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