1
|
Li Z, Li X, Shi P, Li P, Fu Y, Tan G, Zhou J, Zeng J, Huang P. Modulation of Acute Intestinal Inflammation by Dandelion Polysaccharides: An In-Depth Analysis of Antioxidative, Anti-Inflammatory Effects and Gut Microbiota Regulation. Int J Mol Sci 2024; 25:1429. [PMID: 38338707 PMCID: PMC10855136 DOI: 10.3390/ijms25031429] [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: 01/04/2024] [Revised: 01/16/2024] [Accepted: 01/22/2024] [Indexed: 02/12/2024] Open
Abstract
Acute colitis is a complex disease that can lead to dysregulation of the gut flora, inducing more complex parenteral diseases. Dandelion polysaccharides (DPSs) may have potential preventive and therapeutic effects on enteritis. In this study, LPS was used to induce enteritis and VC was used as a positive drug control to explore the preventive and therapeutic effects of DPS on enteritis. The results showed that DPS could repair the intestinal barrier, down-regulate the expression of TNF-α, IL-6, IL-1β, and other pro-inflammatory factors, up-regulate the expression of IL-22 anti-inflammatory factor, improve the antioxidant capacity of the body, and improve the structure of intestinal flora. It is proved that DPS can effectively prevent and treat LPS-induced acute enteritis and play a positive role in promoting intestinal health.
Collapse
Affiliation(s)
- Zhu Li
- College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China
| | - Xinyao Li
- Hunan Key Laboratory of Traditional Chinese Veterinary Medicine, Hunan Agricultural University, Changsha 410128, China
| | - Panpan Shi
- College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China
| | - Pingping Li
- College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China
| | - Yue Fu
- College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China
| | - Guifeng Tan
- College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China
| | - Junjuan Zhou
- College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China
| | - Jianguo Zeng
- College of Veterinary Medicine, Hunan Agricultural University, Changsha 410128, China
| | - Peng Huang
- College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China
| |
Collapse
|
2
|
Ma X, Liu H, Jia Q, Zheng Y, Li W, Chang M, Fu H, Zhu H. Diverse roles of glucocorticoids in the ruminant mammary gland: modulation of mammary growth, milk production, and mastitis. Stress 2023; 26:2252938. [PMID: 37632459 DOI: 10.1080/10253890.2023.2252938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Accepted: 08/23/2023] [Indexed: 08/28/2023] Open
Abstract
As endocrine hormones, glucocorticoids (GCs) play a pivotal role in numerous physiological processes, including mammary growth and lactation, circulatory metabolism, and responses to external stimuli. In the dairy industry, milk production from cows or goats is important for newborns and economic benefits. However, the milk yields from ruminant animals are always affected by the extent of mammary development, mammary disease, stress, or changes in metabolism. Thus, it is necessary to clarify how GCs changes in ruminants affect ruminant mammary gland function and mammary disease. This review summarizes the findings identifying that GCs modulate mammary gland development before lactation, but the stress-induced excessive release of GCs leads to milk production loss. In addition, the manner of GCs release may change under different concentrations of metabolites or during mastitis or inflammatory challenge. Nevertheless, exogenous GCs administration to animals may alleviate the clinical symptoms of mastitis. This review demonstrates that GCs offer a fascinating contribution to both physiologic and pathogenic conditions of the mammary gland in ruminant animals. Characterizing and understanding these changes or functions of endogenous and exogenous GCs in animals will be crucial for developing more endocrine regulators and therapies for improving milk production in ruminants.
Collapse
Affiliation(s)
- Xiaoyue Ma
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Hanling Liu
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Qianqian Jia
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Yumiao Zheng
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Wentao Li
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Mengyu Chang
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Haixia Fu
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Hongmei Zhu
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| |
Collapse
|
3
|
Wei X, Li N, Wu X, Cao G, Qiao H, Wang J, Hao R. The preventive effect of Glycyrrhiza polysaccharide on lipopolysaccharide-induced acute colitis in mice by modulating gut microbial communities. Int J Biol Macromol 2023; 239:124199. [PMID: 36972824 DOI: 10.1016/j.ijbiomac.2023.124199] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Revised: 03/10/2023] [Accepted: 03/23/2023] [Indexed: 03/29/2023]
Abstract
Acute colitis is characterised by an unpredictable onset and causes intestinal flora imbalance together with microbial migration, which leads to complex parenteral diseases. Dexamethasone, a classic drug, has side effects, so it is necessary to use natural products without side effects to prevent enteritis. Glycyrrhiza polysaccharide (GPS) is an α-d-pyranoid polysaccharide with anti-inflammatory effects; however, its anti-inflammatory mechanism in the colon remains unknown. This study investigated whether GPS reduces the lipopolysaccharide (LPS)-induced inflammatory response in acute colitis. The results revealed that GPS attenuated the upregulation of tumour necrosis factor-α, interleukin (IL)-1β, and IL-6 in the serum and colon tissues and significantly reduced the malondialdehyde content in colon tissues. In addition, the 400 mg/kg GPS group showed higher relative expressions of occludin, claudin-1, and zona occludens-1 in colon tissues and lower concentrations of diamine oxidase, D-lactate, and endotoxin in the serum than the LPS group did, indicating that GPS improved the physical and chemical barrier functions of colon tissues. GPS increased the abundance of beneficial bacteria, such as Lactobacillus, Bacteroides, and Akkermansia, whereas pathogenic bacteria, such as Oscillospira and Ruminococcus were inhibited. Our findings indicate that GPS can effectively prevent LPS-induced acute colitis and exert beneficial effects on the intestinal health.
Collapse
Affiliation(s)
- Xinxin Wei
- College of Animal Science, Shanxi Agricultural University, Taigu 030801, China
| | - Na Li
- College of Biological Sciences and Technology, Taiyuan Normal University, Jinzhong 030012, China
| | - Xiaoying Wu
- College of Biological Sciences and Technology, Taiyuan Normal University, Jinzhong 030012, China
| | - Guidong Cao
- Shanxi Ruixiang Bio Pharmaceutical Co., Ltd, Taiyuan 030032, China
| | - Hongping Qiao
- College of Biological Sciences and Technology, Taiyuan Normal University, Jinzhong 030012, China
| | - Jing Wang
- College of Animal Science, Shanxi Agricultural University, Taigu 030801, China
| | - Ruirong Hao
- College of Animal Science, Shanxi Agricultural University, Taigu 030801, China.
| |
Collapse
|
4
|
Wang X, Tang M, Zhang Y, Li Y, Mao J, Deng Q, Li S, Jia Z, Du L. Dexamethasone enhances glucose uptake by SGLT1 and GLUT1 and boosts ATP generation through the PPP-TCA cycle in bovine neutrophils. J Vet Sci 2022; 23:e76. [PMID: 36174980 PMCID: PMC9523333 DOI: 10.4142/jvs.22112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2022] [Revised: 07/18/2022] [Accepted: 07/26/2022] [Indexed: 11/20/2022] Open
Abstract
Background Clinical dexamethasone (DEX) treatment or stress in bovines results in extensive physiological changes with prominent hyperglycemia and neutrophils dysfunction. Objectives To elucidate the effects of DEX treatment in vivo on cellular energy status and the underlying mechanism in circulating neutrophils. Methods We selected eight-month-old male bovines and injected DEX for 3 consecutive days (1 time/d). The levels of glucose, total protein (TP), total cholesterol (TC), and the proinflammatory cytokines interleukin (IL)-1β, IL-6 and tumor necrosis factor (TNF)-α in blood were examined, and we then detected glycogen and adenosine triphosphate (ATP) content, phosphofructosekinase-1 (PFK1) and glucose-6-phosphate dehydrogenase (G6PDH) activity, glucose transporter (GLUT)1, GLUT4, sodium/glucose cotransporter (SGLT)1 and citrate synthase (CS) protein expression and autophagy levels in circulating neutrophils. Results DEX injection markedly increased blood glucose, TP and TC levels, the Ca2+/P5+ ratio and the neutrophil/lymphocyte ratio and significantly decreased blood IL-1β, IL-6 and TNF-α levels. Particularly in neutrophils, DEX injection inhibited p65-NFκB activation and elevated glycogen and ATP contents and SGLT1, GLUT1 and GR expression while inhibiting PFK1 activity, enhancing G6PDH activity and CS expression and lowering cell autophagy levels. Conclusions DEX induced neutrophils glucose uptake by enhancing SGLT1 and GLUT1 expression and the transformation of energy metabolism from glycolysis to pentose phosphate pathway (PPP)-tricarboxylic acid (TCA) cycle. This finding gives us a new perspective on deeper understanding of clinical anti-inflammatory effects of DEX on bovine.
Collapse
Affiliation(s)
- Xinbo Wang
- College of Animal Science and Technology, Inner Mongolia Minzu University, Tongliao 028000, China
| | - Mingyu Tang
- College of Animal Science and Technology, Inner Mongolia Minzu University, Tongliao 028000, China
| | - Yuming Zhang
- College of Animal Science and Technology, Inner Mongolia Minzu University, Tongliao 028000, China.,Key Laboratory for Prevention and Control of Herbivorous Livestock Perinatal Diseases, Inner Mongolia Minzu University, Tongliao 028000, China
| | - Yansong Li
- College of Animal Science and Technology, Inner Mongolia Minzu University, Tongliao 028000, China
| | - Jingdong Mao
- College of Animal Science and Technology, Inner Mongolia Minzu University, Tongliao 028000, China
| | - Qinghua Deng
- College of Animal Science and Technology, Inner Mongolia Minzu University, Tongliao 028000, China.,Key Laboratory for Prevention and Control of Herbivorous Livestock Perinatal Diseases, Inner Mongolia Minzu University, Tongliao 028000, China
| | - Shusen Li
- College of Animal Science and Technology, Inner Mongolia Minzu University, Tongliao 028000, China
| | - Zhenwei Jia
- College of Animal Science and Technology, Inner Mongolia Minzu University, Tongliao 028000, China
| | - Liyin Du
- College of Animal Science and Technology, Inner Mongolia Minzu University, Tongliao 028000, China.,Key Laboratory for Prevention and Control of Herbivorous Livestock Perinatal Diseases, Inner Mongolia Minzu University, Tongliao 028000, China.
| |
Collapse
|
5
|
Kamel Oroumieh S, Naserian AA, Van Meulebroek L, De Paepe E, Valizadeh R, Vanhaecke L. Metabolic Fingerprinting of Feces from Calves, Subjected to Gram-Negative Bacterial Endotoxin. Metabolites 2021; 11:metabo11020108. [PMID: 33668448 PMCID: PMC7918135 DOI: 10.3390/metabo11020108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 02/03/2021] [Accepted: 02/09/2021] [Indexed: 11/23/2022] Open
Abstract
Gram-negative bacteria have a well-known impact on the disease state of neonatal calves and their mortality. This study was the first to implement untargeted metabolomics on calves’ fecal samples to unravel the effect of Gram-negative bacterial endotoxin lipopolysaccharide (LPS). In this context, calves were challenged with LPS and administered with fish oil, nanocurcumin, or dexamethasone to evaluate treatment effects. Ultra-high-performance liquid-chromatography high-resolution mass spectrometry (UHPLC-HRMS) was employed to map fecal metabolic fingerprints from the various groups before and after LPS challenge. Based on the generated fingerprints, including 9650 unique feature ions, significant separation according to LPS group was achieved through orthogonal partial least squares discriminant analysis (Q2 of 0.57 and p-value of 0.022), which allowed the selection of 37 metabolites as bacterial endotoxin markers. Tentative identification of these markers suggested that the majority belonged to the subclass of the carboxylic acid derivatives—amino acids, peptides, and analogs—and fatty amides, with these subclasses playing a role in the metabolism of steroids, histidine, glutamate, and folate. Biological interpretations supported the revealed markers’ potential to aid in disease diagnosis, whereas beneficial effects were observed following dexamethasone, fish oil, and nanocurcumin treatment.
Collapse
Affiliation(s)
- Saeid Kamel Oroumieh
- Laboratory of Chemical Analysis, Department of Veterinary Public Health and Food Safety, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium
- Department of Animal Science, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad P.O. Box 91775-1163, Iran
| | - Abbas Ali Naserian
- Department of Animal Science, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad P.O. Box 91775-1163, Iran
| | - Lieven Van Meulebroek
- Laboratory of Chemical Analysis, Department of Veterinary Public Health and Food Safety, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium
| | - Ellen De Paepe
- Laboratory of Chemical Analysis, Department of Veterinary Public Health and Food Safety, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium
| | - Reza Valizadeh
- Department of Animal Science, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad P.O. Box 91775-1163, Iran
| | - Lynn Vanhaecke
- Laboratory of Chemical Analysis, Department of Veterinary Public Health and Food Safety, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium
| |
Collapse
|
6
|
Effect of nanocurcumin and fish oil as natural anti-inflammatory compounds vs. glucocorticoids in a lipopolysaccharide inflammation model on Holstein calves' health status. Heliyon 2021; 7:e05894. [PMID: 33553719 PMCID: PMC7855347 DOI: 10.1016/j.heliyon.2020.e05894] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 11/17/2020] [Accepted: 12/30/2020] [Indexed: 01/17/2023] Open
Abstract
Curcumin (CUR) and fish oil (FO) are among the most well-known types of natural anti-inflammatory compounds. The aim of this study was to assess the effect of nanocurcumin and fish oil vs. glucocorticoids on Holstein calves’ health status. A lipopolysaccharide (LPS) challenge (0.5 μg kg−1 BW) was used to induce an acute phase response. A total of 42 male Holstein calves were randomized into 7 groups: negative control (CON), positive control (LPS, injected once), 250 mg/kg BW per day fish oil + LPS (FO250), 350 mg/kg BW per day fish oil + LPS (FO350), 2 mg/kg BW per day nanocurcumin + LPS (NCUR2), 4 mg/kg BW per day nanocurcumin + LPS (NCUR4), and 0.3 mg/kg BW dexamethasone (injected once) + LPS (DEX). The duration of this experiment was 11 days, with application of the LPS challenge on day 8. Calves were weighed on days 0, 7, 9, 10, and 11 to record the average daily weight gain; diets offered and refused were recorded daily throughout the experiment. Blood collection and clinical scoring were conducted at successive time points until 72 h post LPS challenge. The data obtained also comprised rectal temperature (RT), respiratory rate (RR), heart rate (HR), concentrations of tumor necrosis factor-α (TNF-α), interleukin 6 (IL-6), serum amyloid A (SAA), and haptoglobin (Hp). This experiment could not uncover significant effects of LPS, FO, NCUR, and DEX on the area under the curve (AUC) of the RT, HR, and RR; in addition, there was no difference between FO and NCUR vs. LPS in sickness behavior, however, DEX group significantly recovered faster than others (P < 0.01). There was no significant difference between groups in dry matter intake (DMI) and average daily gain (ADG) during three days post LPS challenge. The concentrations of TNF-⍺, IL-6, and SAA were lower in the DEX group (P < 0.05). Finally, no effects of FO and NCUR on cytokines and acute phase proteins (APPs) could be observed in this study. In conclusion, supplementation of FO and NCUR was not able to impact the acute phase response (APR) in calves, as levels of inflammatory cytokines and APPs as well as sickness behavior remained unchanged. It seems that the anti-inflammatory effects of FO and CUR on APR, as has been observed for other animal species, do not manifest that clearly in calves.
Collapse
|
7
|
Gasthuys E, Houben R, Haesendonck R, De Baere S, Sys SU, Morrens J, Antonissen G. Development of an in Vivo Lipopolysaccharide Inflammation Model to Study the Pharmacodynamics of COX-2 Inhibitors Celecoxib, Mavacoxib, and Meloxicam in Cockatiels ( Nymphicus hollandicus). J Avian Med Surg 2020; 33:349-360. [PMID: 31833303 DOI: 10.1647/2018-391] [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] [Indexed: 11/11/2022]
Abstract
Nonsteroidal anti-inflammatory drugs (NSAIDs) are used frequently in avian medicine for their antipyretic, analgesic, and anti-inflammatory properties during surgery and for diseases that cause tissue damage and inflammation. NSAIDs inhibit cyclooxygenase (COX) enzymes, which are responsible for the induction of pyresis, pain, and inflammation. In our study, a lipopolysaccharide-induced (LPS) pyresis model was optimized using cockatiels (Nymphicus hollandicus) as subject birds (four males/three females) and validated in two females and one male, characterized by an intravenous bolus injection of LPS (7.5 mg/kg) administered at T0 and T24 (24 hours following the first LPS injection). To demonstrate the feasibility of the model to assess pharmacodynamic (PD) parameters of different NSAIDs, mavacoxib 4 mg/kg (four males/four females), celecoxib 10 mg/kg (four males/four females) and meloxicam 1 mg/kg (four males/four females) were evaluated in the model at dosages used frequently in practice. The PD parameters (body temperature, mentation, posture, preference of location in the cage, and prostaglandin E2 [PGE2] plasma concentrations) were determined for 10 hours following the second LPS injection. At the doses evaluated, mavacoxib and celecoxib significantly reduced LPS-induced hypothermia, but had no clear effects on other clinical signs of illness. In contrast, no effect on hypothermia or clinical appearance was observed in the LPS-challenged cockatiels treated with meloxicam. All three NSAIDs were able to inhibit the increase in LPS-induced PGE2 plasma concentrations, yet the effect was most pronounced in the birds treated with meloxicam. Consequently, the presented model opens perspectives for future dose-effect PD studies to optimize analgesic protocols in cockatiels.
Collapse
Affiliation(s)
- Elke Gasthuys
- Faculty of Veterinary Medicine, Department of Pharmacology, Toxicology and Biochemistry, Ghent University, 9820 Merelbeke, Belgium
| | - Renée Houben
- Faculty of Veterinary Medicine, Department of Pharmacology, Toxicology and Biochemistry, Ghent University, 9820 Merelbeke, Belgium
| | - Roel Haesendonck
- Department of Pathology, Bacteriology and Avian Diseases, Ghent University, 9820 Merelbeke, Belgium
| | - Siegrid De Baere
- Faculty of Veterinary Medicine, Department of Pharmacology, Toxicology and Biochemistry, Ghent University, 9820 Merelbeke, Belgium
| | - Stanislas U Sys
- Department of Large Animal Internal Medicine, Ghent University, 9820 Merelbeke, Belgium
| | - Joachim Morrens
- VIB, 3001 Leuven, Belgium.,IMEC, 3001 Leuven, Belgium.,KU Leuven, Department of Neuroscience, 3001 Leuven, Belgium.,Neuroelectronics Research Flanders, 3001 Leuven, Belgium
| | - Gunther Antonissen
- Faculty of Veterinary Medicine, Department of Pharmacology, Toxicology and Biochemistry, Ghent University, 9820 Merelbeke, Belgium.,Department of Pathology, Bacteriology and Avian Diseases, Ghent University, 9820 Merelbeke, Belgium
| |
Collapse
|
8
|
Protective Effect of Resveratrol Improves Systemic Inflammation Responses in LPS-Injected Lambs. Animals (Basel) 2019; 9:ani9110872. [PMID: 31661768 PMCID: PMC6912468 DOI: 10.3390/ani9110872] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 10/23/2019] [Accepted: 10/24/2019] [Indexed: 12/15/2022] Open
Abstract
Simple Summary China’s livestock industry has been transforming from traditional extensive systems to highly intensive systems. Highly intensive livestock production often causes immune stress to animals, which makes them more susceptible to infections. The aim of this study was to examine whether resveratrol alleviates inflammation in lambs. Results showed that resveratrol attenuated the LPS-evoked inflammatory responses in lambs by suppressing expression levels of inflammatory cytokines and blocking NF-κB and MAPK signaling pathways. Based on these studies, resveratrol has the potential to be a promising therapeutic reagent for multiple inflammatory illnesses caused by immune stress. Abstract Highly intensive livestock production often causes immune stress to animals, which makes them more susceptible to infections. The aim of this study was to examine whether resveratrol (Res) alleviates inflammation in lambs. In Experiment 1, 16 male lambs were injected with lipopolysaccharides (LPS) at an initial dose of 0.25, 1.25, and 2.5 μg/kg body weight (BW) for 9 days. Average daily gain and blood parameters were measured and clinical symptoms were recorded. In Experiment 2, 20 male lambs were injected intravenously with LPS (0 mg/kg) + Res (0 mg), LPS (2.5 μg /kg) + Res (0 mg, 82.5 mg, 165 mg, 330 mg), 4 h after LPS injection. Jugular blood was collected from each lamb to determine white blood cell (WBC) counts and the expression of inflammatory genes. In Experiment 1, all LPS-treated lambs showed clinical signs of sickness including rhinorrhea, lethargy, and shivering, and systemic inflammatory responses of increased inflammatory genes levels and cortisol concentration. The lambs had increased respiratory and heart rates and rectal temperature and decreased average daily gain and feed intake. In Experiment 2, resveratrol significantly reduced WBCs and the expression levels of several genes associated with inflammation response (TLR4, NF-κB, c-jun) and inhibited the signaling cascades of NF-κB and MAPKs by down-regulating the expression levels of inflammatory cytokines (IL-1β, IL-4, IL-6, TNF-α, IFN-γ) induced by LPS. Resveratrol attenuated the LPS-evoked inflammatory responses in lambs by suppressing expression levels of inflammatory cytokines, and blocking NF-κB and MAPK signaling pathways.
Collapse
|
9
|
Depreester E, Meyer E, Demeyere K, Van Eetvelde M, Hostens M, Opsomer G. Flow cytometric assessment of myeloperoxidase in bovine blood neutrophils and monocytes. J Dairy Sci 2017; 100:7638-7647. [PMID: 28690058 DOI: 10.3168/jds.2016-12186] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2016] [Accepted: 04/25/2017] [Indexed: 12/12/2022]
Abstract
Myeloperoxidase (MPO) is a lysosomal peroxidase enzyme mainly stored in the azurophilic granules of neutrophils playing an important role in innate immunity for first-line protection against microorganisms in many species including cattle. As such, determination of MPO has become of great interest for the diagnosis of infectious and inflammatory diseases in multiple species such as humans. In cattle, MPO determination is rarely done because methods to assess MPO in this species are limited: functional assays have been described earlier, but so far, the quantification of MPO at the single cell level has not been done yet. In the present paper, an innovative flow cytometric method to assess MPO in blood leukocytes of dairy cattle is described. A commercial anti-bovine MPO was used following density gradient separation to isolate polymorphonuclear (PMN) and mononuclear (MN) leukocytes from blood. Identification of PMN and MN, subdivided in monocytes and lymphocytes, was based on the expression of the surface markers CH138A and CD172A. The optimized protocol was subsequently evaluated on blood samples of 17 Holstein Friesian heifers. Myeloperoxidase expression was measured flow cytometrically and visualized by fluorescence microscopic imaging of sorted PMN and MN populations. We suggest this innovative method to be useful in the field for early detection of cows at higher risk for inflammatory diseases such as mastitis and metritis during the transition period.
Collapse
Affiliation(s)
- Elke Depreester
- Department of Reproduction, Obstetrics and Herd Health, Ghent University, Salisburylaan 133, Merelbeke 9820, Belgium
| | - Evelyne Meyer
- Laboratory of Biochemistry, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, Merelbeke 9820, Belgium
| | - Kristel Demeyere
- Laboratory of Biochemistry, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, Merelbeke 9820, Belgium
| | - Mieke Van Eetvelde
- Department of Reproduction, Obstetrics and Herd Health, Ghent University, Salisburylaan 133, Merelbeke 9820, Belgium
| | - Miel Hostens
- Department of Reproduction, Obstetrics and Herd Health, Ghent University, Salisburylaan 133, Merelbeke 9820, Belgium
| | - Geert Opsomer
- Department of Reproduction, Obstetrics and Herd Health, Ghent University, Salisburylaan 133, Merelbeke 9820, Belgium.
| |
Collapse
|
10
|
Plessers E, Wyns H, Watteyn A, Pardon B, Baere SD, Sys SU, Backer PD, Croubels S. Immunomodulatory properties of gamithromycin and ketoprofen in lipopolysaccharide-challenged calves with emphasis on the acute-phase response. Vet Immunol Immunopathol 2016; 171:28-37. [DOI: 10.1016/j.vetimm.2016.01.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2015] [Revised: 01/24/2016] [Accepted: 01/25/2016] [Indexed: 11/29/2022]
|