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Maqbool A, Paul BT, Jesse FFA, Teik Chung EL, Mohd Lila MA, Haron AW. Biomarkers, immune responses and cellular changes in vaccinated and non-vaccinated goats during experimental infection of M. haemolytica A2 under tropical conditions. Microb Pathog 2021; 157:105001. [PMID: 34048891 DOI: 10.1016/j.micpath.2021.105001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2020] [Revised: 05/18/2021] [Accepted: 05/18/2021] [Indexed: 01/20/2023]
Abstract
BACKGROUND We investigated the biomarkers, immune responses and cellular changes in vaccinated and non-vaccinated goats experimentally challenged with M. haemolytica serotype A2 under rainy and hot tropical conditions. A total of twenty-four clinically healthy, non-pregnant, female goats randomly allocated to 2 groups of 12 goats each were used for the study. The 12 goats in each season were subdivided into three groups (n = 4), which served as the control (G-NEG), non-vaccinated (G-POS), and vaccinated (G-VACC). In week-1, the G-VACC received 2 mL of alum-precipitated pasteurellosis vaccine while G-POS and G-NEG received 2 ml of sterile PBS. In week 2, the G-POS and G-VACC received 1 mL intranasal spray containing 105 CFU of M. haemolytica serotype A2. Inoculation was followed by daily monitoring and weekly bleeding for eight weeks to collect data and serum for biomarkers and immune responses using commercial ELISA test kits. The goats were humanely euthanised at the end of the experiments to collect lungs and the submandibular lymph nodes tissue samples for gross and histopathological examinations. RESULTS Regardless of the season, we have observed a significant (p < 0.05) increase in serum concentrations of acute-phase proteins (haptoglobin, serum amyloid A), proinflammatory cytokines (interleukine-1β, interleukin-6), antibodies (immunoglobulin M, immunoglobulin G), and stress markers (cortisol and heat shock protein 70) in the G-POS goats compared to G-VACC and G-NEG. With regards to seasons, there was a significantly (p < 0.05) higher serum concentration with 1.5, 2 and 1-folds increase in the serum interleukin (IL)-1β, cortisol, and heat shock protein (HSP)-70 in the G-POS during rainy compared to the hot season. Histopathology of the lungs in G-POS goats revealed inflammatory cell infiltration, degeneration, haemorrhage/congestion, and pulmonary oedema in the alveoli spaces; thickening of the interstitium, and desquamation of bronchiolar epithelium. Cellular changes in the lymph node were characterized by a marked hypercellularity in G-POS goats. CONCLUSION Host responses to pneumonic mannheimiosis based on increased serum levels of biomarkers (cortisol, HSP70, IL-1β and IL-6) and severe cellular changes seen in the lungs and lymph nodes of G-POS goats compared to vaccinated goats and control group are influenced by the high environmental humidity recorded in the rainy season. Increased relative humidity in the rainy season is a significant stress factor for the higher susceptibility and severity of pneumonic mannheimiosis of goats in the tropics. Vaccination of goats using the alum precipitated Pasteurella multocida vaccine before the onset of the rainy season is recommended to minimise mortality due to potential outbreaks of pneumonia during the rainy season.
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Affiliation(s)
- Arsalan Maqbool
- Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia; Directorate of Animal Health, Livestock, and Dairy Development Department, Balochistan, 87300, Pakistan
| | - Bura Thlama Paul
- Department of Veterinary Clinical Studies, Faculty of Veterinary Medicine, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia; Veterinary Teaching Hospital, University of Maiduguri, 600230, Maiduguri, Borno State, Nigeria
| | - Faez Firdaus Abdullah Jesse
- Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia; Department of Veterinary Clinical Studies, Faculty of Veterinary Medicine, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia.
| | - Eric Lim Teik Chung
- Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia; Department of Animal Science, Faculty of Agriculture, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
| | - Mohd Azmi Mohd Lila
- Department of Pathology and Microbiology, Faculty of Veterinary Medicine, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
| | - Abd Wahid Haron
- Department of Veterinary Clinical Studies, Faculty of Veterinary Medicine, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
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Shalby NA, Abo El-Maaty AM, Ali AH, Elgioushy M. Acute phase biomarkers, oxidants, antioxidants, and trace minerals of mobile sheep flocks naturally infected with brucellosis. BULGARIAN JOURNAL OF VETERINARY MEDICINE 2021. [DOI: 10.15547/bjvm.2020-0002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
This study assayed the acute phase responses of sheep seropositive to Brucella. Sera collected from ewes (n=160) were subjected to serological tests of Brucella, Rose Bengal plate agglutination test (RBPAT), buffer acidified plate agglutination test (BAPAT), and complement fixation test (CFT). Results revealed that CFT was the most predictive test of brucellosis followed by BAPAT then RBPAT. The moderate predictive blood biochemical parameters were zinc and ascorbic acid. Ewes with low CFT titre (chronic) had low fibrinogen, copper, NO, and GPx. Seropositive animals had high blood concentrations of ascorbic acid and zinc.
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Affiliation(s)
- N. A. Shalby
- Animal Health Research Institute, Agriculture Research center, Dokki, Giza, Egypt
| | - A. M. Abo El-Maaty
- Animal Reproduction and Artificial Insemination, Veterinary Research Division, National Research Centre, Dokki, Giza (Reproductive Physiology), Egypt
| | - A. H. Ali
- Animal Reproduction and Artificial Insemination, Veterinary Research Division, National Research Centre, Dokki, Giza (Reproductive Physiology), Egypt
| | - M. Elgioushy
- Department of Animal Medicine, Faculty of Veterinary Medicine, Aswan University, Aswan, Egypt
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de Oliveira Scarpino van Cleef F, Haydt Castello Branco van Cleef E, de Abreu Santos DJ, Herédias Ribas CM, Zirondi Longhini V, Ruggieri AC. Physiological and behavioural responses of sheep grazing in a tropical silvopastoral system. ANIMAL PRODUCTION SCIENCE 2021. [DOI: 10.1071/an20317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Context
Integrating trees and pastures can provide benefits to grazing animals in warm climates, such as provision of shade during the excessive heat.
Aim
Our aim was to evaluate the effects of two arrangements of trees on grass production and behavioural, physiological and blood parameters of crossbred lambs grazing massai grass (Megathyrsus maximus) pastures in a tropical environment in São Paulo state, Brazil.
Methods
Two groups of 24 Santa Inês × Dorper male lambs (~90 days old, 24.0 ± 3.3 and 22.0 ± 2.4 kg bodyweight, respectively) were used in two growing seasons, stratified by initial bodyweight and randomly assigned to one of three treatments: unshaded massai grass (no shading, NS), moderate shading (MS), or intense shading (IS). Treatments MS and IS were established with single rows of eucalyptus trees at spacing 12 m or 6 m between rows and 2 m within rows, corresponding to 786 and 1190 trees/ha. Each growing season consisted of two grazing cycles of ~20 days each, when tester animals grazed simultaneously in a rotational stocking system with variable stocking rate. Behavioural observations were feeding, lying ruminating, standing ruminating, lying, standing still, searching for food, and other. Physiological measurements were rectal temperature, respiratory frequency and heart rate. Blood parameters included haemogram, acute-phase proteins and serum cortisol concentrations.
Key results
Animals under treatment IS spent more time (P < 0.05) lying, standing still and at other activities than animals under NS and MS. Moreover, they presented lower rectal temperature and respiratory and heart rates than animals under NS during the first growing season, which was the season with higher temperatures. Cortisol and acute-phase proteins were not affected by treatment.
Conclusions
When animals were exposed to sun, the silvopastoral system was efficient for avoiding heat stress; however, the density of trees reduced the forage mass.
Implications
The silvopastoral system is a viable alternative production system in warm climates to improve the welfare of sheep, but the density of trees must be considered so that it does not negatively influence the forage mass.
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The Electrophoretic Pattern of Serum Proteins in Sheep with Naturally Acquired Gastrointestinal Nematode Infections. ACTA VET-BEOGRAD 2020. [DOI: 10.2478/acve-2020-0024] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Abstract
The objective of this study was to describe the serum protein pattern in sheep with naturally acquired gastrointestinal parasitosis and to compare the distribution of protein fractions with the results obtained in animals with negative fecal examination results. Fecal and blood samples were taken from twenty-nine sheep positive for nematode eggs and twenty-four animals with negative results of fecal examination. Between the evaluated groups of sheep significant differences were noted in the relative mean values for all protein fractions and for albumin/globulin ratio (p<0.01 and p<0.001). The concentrations of total proteins showed no significant differences between both groups of sheep. The absolute mean values of albumin, α2-globulins and A/G ratio were significantly lower, the mean concentrations of α1-, β-, γ1- and γ2-globulins significantly higher in the nematode positive group of sheep (p<0.01 and p<0.001). In the nematode positive group the protein electrophoretic pattern showed a double α2-zone in three sheep and the γ-globulin zones were characterized by a diffuse higher broad and wide peaks. The presented results indicate that the gastrointestinal parasitic infections in sheep alter the distribution of serum proteins, and suggest their usefulness in animals with unchanged serum protein concentrations. The study brings new findings and extends the knowledge about the metabolic responses and consequences of gastrointestinal parasitic infections in sheep, particularly with regard to alterations in protein metabolism.
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Ferrara F, Zeisig V, Pietsch S, Rütten R, Dreyer AY, Pieper L, Schatzl AK, McLeod DD, Barthel H, Boltze J, Schrödl W, Nitzsche B. Hypothesis and Theory: A Pathophysiological Concept of Stroke-Induced Acute Phase Response and Increased Intestinal Permeability Leading to Secondary Brain Damage. Front Neurosci 2020; 14:272. [PMID: 32372897 PMCID: PMC7186394 DOI: 10.3389/fnins.2020.00272] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Accepted: 03/10/2020] [Indexed: 12/15/2022] Open
Abstract
Gut integrity impairment leading to increased intestinal permeability (IP) is hypothesized to be a trigger of critically illness. Approximately 15-20% of human ischemic stroke (IS) victims require intensive care, including patients with impaired level of consciousness or a high risk for developing life-threatening cerebral edema. Local and systemic inflammatory reactions are a major component of the IS pathophysiology and can significantly aggravate brain tissue damage. Intracerebral inflammatory processes following IS have been well studied. Until now, less is known about systemic inflammatory responses and IS consequences apart from a frequently observed post-IS immunosuppression. Here, we provide a hypothesis of a crosstalk between systemic acute phase response (APR), IP and potential secondary brain damage during acute and subacute IS stages supported by preliminary experimental data. Alterations of the acute phase proteins (APPs) C-reactive protein and lipopolysaccharide-binding protein and serum level changes of antibodies directed against Escherichia coli-cell extract antigen (IgA-, IgM-, and IgG-anti-E. coli) were investigated at 1, 2, and 7 days following IS in ten male sheep. We found an increase of both APPs as well as a decrease of all anti-E. coli antibodies within 48 h following IS. This may indicate an early systemic APR and increased IP, and underlines the importance of the increasingly recognized gut-brain axis and of intestinal antigen release for systemic immune responses in acute and subacute stroke stages.
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Affiliation(s)
- Fabienne Ferrara
- Fraunhofer Institute for Cell Therapy and Immunology (IZI), Leipzig, Germany
| | - Vilia Zeisig
- Clinic and Policlinic for Nuclear Medicine, University of Leipzig, Leipzig, Germany
| | - Sören Pietsch
- Klinik und Poliklinik für Kinder und Jugendmedizin, Universitätsklinikum Leipzig, Leipzig, Germany
| | - Rita Rütten
- Fraunhofer Institute for Cell Therapy and Immunology (IZI), Leipzig, Germany
| | - Antje Y Dreyer
- Fraunhofer Institute for Cell Therapy and Immunology (IZI), Leipzig, Germany
| | - Laura Pieper
- Institut für Veterinär-Epidemiologie und Biometrie, Freie Universität Berlin, Berlin, Germany
| | - Ann-Kathrin Schatzl
- Fraunhofer Institute for Cell Therapy and Immunology (IZI), Leipzig, Germany
| | - Damian D McLeod
- OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital CG Carus, TU Dresden, HZDR, Dresden, Germany.,School of Biomedical Sciences and Pharmacy, Faculty of Health and Medicine, and Hunter Medical Research Institute, The University of Newcastle, Callaghan, NSW, Australia
| | - Henryk Barthel
- Clinic and Policlinic for Nuclear Medicine, University of Leipzig, Leipzig, Germany
| | - Johannes Boltze
- School of Life Sciences, Faculty of Science, University of Warwick, Coventry, United Kingdom
| | - Wieland Schrödl
- Faculty of Veterinary Medicine, Institute of Bacteriology and Mycology, University of Leipzig, Leipzig, Germany
| | - Björn Nitzsche
- Clinic and Policlinic for Nuclear Medicine, University of Leipzig, Leipzig, Germany
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Filling the gap of Brachiaria decumbens (signal grass) research on clinico-pathology and haemato-biochemistry in small ruminants: A review. Toxicon 2019; 174:26-31. [PMID: 31989927 DOI: 10.1016/j.toxicon.2019.12.158] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Revised: 12/17/2019] [Accepted: 12/23/2019] [Indexed: 11/20/2022]
Abstract
Brachiaria decumbens (signal grass) is a highly productive tropical grass that is widespread in some tropical countries due to its adaptation to a wide range of environments and soil types. However, a limiting factor for the use of this grass is its toxicity from steroidal saponins. Sporadic outbreaks of hepatogenous photosensitization in ruminants grazing on this grass have been reported. Sheep are more susceptible than other animal species and the young are more susceptible than adults. This review article will critically shed light on the B. decumbens profile, its toxic compounds, mechanisms, clinical responses, blood profile alterations, pathological changes, and acute phase responses related to signal grass intoxication. Further research is needed to integrate new findings on B. decumbens intoxication with previous preventive and therapeutic trials to minimize or remove its deleterious toxic effect.
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Iliev P, Georgieva T. Acute phase biomarkers of diseases in small ruminants: an overview. BULGARIAN JOURNAL OF VETERINARY MEDICINE 2019. [DOI: 10.15547/10.15547/bjvm.1051] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Acute phase proteins (APPs) are a large group of proteins synthesised mainly by the liver. Their
production is stimulated in response to disturbances in the systemic homeostasis. It is known that
each species has a specific set of APPs. Serum amyloid A and haptoglobin are the main APPs in
small ruminants and their plasma concentration is changed most significantly in comparison with
minor APPs such as ceruloplasmin. In general, APPs could provide valuable information on the general
condition of the organism but cannot point at the exact disease. Therefore, APPs should be
included as an additional indicator in clinical diagnosis. Knowledge of APPs behaviour in disease
states has a remarkable potential for detecting animals with subclinical infections, determining the
prognosis of clinical infection, differentiation between viral and bacterial disease, treatment
monitoring, vaccine effectiveness and stress conditions. The aim of this review is to present data on
APPs behaviour during some parasitic and infectious diseases as well as pathological conditions leading
to aseptic inflammation and stress in sheep and goats.
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Jesse FFA, Chung ELT, Abba Y, Muniandy KV, Tan AHAR, Maslamany D, Bitrus AA, Lila MAM, Norsidin MJ. Establishment of lung auscultation scoring method and responses of acute phase proteins and heat shock proteins in vaccinated and non-vaccinated goats. Trop Anim Health Prod 2018; 51:289-295. [PMID: 30088124 DOI: 10.1007/s11250-018-1683-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2018] [Accepted: 07/27/2018] [Indexed: 01/01/2023]
Abstract
Pneumonic pasteurellosis is an economically important infectious disease in the small ruminant industry which causes sudden death and loss for farmers. Nonetheless, this disease is still a common sight in sheep and goats in Malaysia, probably due to the unpopular usage of pasteurellosis vaccine or inappropriate vaccination practices. The aim of this study was designed to classify the severity of pneumonia via the establishment of auscultation scoring method and to quantify the acute phase proteins and heat shock proteins responses from vaccinated and non-vaccinated goats. Goat farms, consist of vaccinated and non-vaccinated farms, were selected in this study: where 15 clinically normal healthy goats and 9 pneumonic goats were selected from vaccinated farms whereas 15 clinically normal healthy goats and 31 pneumonic goats from non-vaccinated farms were selected for this study. Crackle lung sounds were not detected in both vaccinated and non-vaccinated normal goats. However, vaccinated pneumonic goats showed mild crackle lung sound while non-vaccinated pneumonic goats exhibited moderate crackle lung sound. There were significant increases (p < 0.05) in acute phase proteins and heat shock proteins concentrations for the non-vaccinated pneumonic goats group. In this study, conclusion can be made that the vaccinated goats exhibited very mild clinical responses of pneumonia and non-significant biomarker responses compared to the non-vaccinated goats. Thus, vaccination is an effective preventive measure to control pneumonic pasteurellosis and acute phase proteins and heat shock proteins can be considered as future biomarkers in screening and rapid diagnostic method for this particular disease.
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Affiliation(s)
- Faez Firdaus Abdullah Jesse
- Department of Veterinary Clinical Studies, Faculty of Veterinary Medicine, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia. .,Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia, Serdang, Selangor, Malaysia.
| | - Eric Lim Teik Chung
- Department of Animal Science, Faculty of Agriculture, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Yusuf Abba
- Department of Veterinary Clinical Studies, Faculty of Veterinary Medicine, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia.,Department of Veterinary Pathology, Faculty of Veterinary Medicine, University of Maiduguri, Maiduguri, Borno, P.M.B 1069, Nigeria
| | - Kalai Vaani Muniandy
- Department of Veterinary Clinical Studies, Faculty of Veterinary Medicine, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
| | - Ahmad Hafizin Ahmad Ramizi Tan
- Department of Veterinary Clinical Studies, Faculty of Veterinary Medicine, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
| | - Dharshini Maslamany
- Department of Veterinary Clinical Studies, Faculty of Veterinary Medicine, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
| | - Asinamai Athliamai Bitrus
- Research Unit, Microbial Food Safety and Antimicrobial Resistance, Department of Veterinary Public Health, Faculty of Veterinary Science, Chulalongkorn University, Pathumwan, Bangkok, 10330, Thailand
| | - Mohd Azmi Mohd Lila
- Department of Veterinary Pathology and Microbiology, Faculty of Veterinary Medicine, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
| | - Mohd Jefri Norsidin
- Department of Veterinary Clinical Studies, Faculty of Veterinary Medicine, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
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Miglio A, Moscati L, Scoccia E, Maresca C, Antognoni MT, Felici A. Reference values for serum amyloid A, haptoglobin, lysozyme, zinc and iron in healthy lactating Lacaune sheep. Acta Vet Scand 2018; 60:46. [PMID: 30081939 PMCID: PMC6080557 DOI: 10.1186/s13028-018-0400-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2018] [Accepted: 07/27/2018] [Indexed: 11/22/2022] Open
Abstract
Acute-phase proteins and trace elements are considered biomarkers of the immune response to infection, inflammation, trauma and other pathological conditions, as well as indicators of the health status and productivity of farm animals. Given the scarcity of published data on this topic, the purpose of this study was to determine the serum levels of serum amyloid A (SAA) and haptoglobin, as well as lysozyme, iron and zinc in clinically healthy Lacaune sheep in lactation months 3–7 ranging in age from 2 to 6 years. The mean serum levels for SAA (12.2 µg/mL), lysozyme (1.47 µg/mL), zinc (78.9 µg/dL) and iron (26.6 mmol/L) differed from those found in other sheep breeds and indicate considerable variations depending on breed, age and physiological status of the sheep. Reference values for clinically healthy mid-lactating Lacaune sheep were determined by using well-described and modern analytical and statistical methods. The reference intervals may be used to determine the health and welfare of lactating Lacaune sheep and may serve as a starting point to investigate diseases.
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Chemonges S, Tung JP, Fraser JF. Proteogenomics of selective susceptibility to endotoxin using circulating acute phase biomarkers and bioassay development in sheep: a review. Proteome Sci 2014; 12:12. [PMID: 24580811 PMCID: PMC3946179 DOI: 10.1186/1477-5956-12-12] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2013] [Accepted: 02/24/2014] [Indexed: 02/06/2023] Open
Abstract
Scientists have injected endotoxin into animals to investigate and understand various pathologies and novel therapies for several decades. Recent observations have shown that there is selective susceptibility to Escherichia coli lipopolysaccharide (LPS) endotoxin in sheep, despite having similar breed characteristics. The reason behind this difference is unknown, and has prompted studies aiming to explain the variation by proteogenomic characterisation of circulating acute phase biomarkers. It is hypothesised that genetic trait, biochemical, immunological and inflammation marker patterns contribute in defining and predicting mammalian response to LPS. This review discusses the effects of endotoxin and host responses, genetic basis of innate defences, activation of the acute phase response (APR) following experimental LPS challenge, and the current approaches employed in detecting novel biomarkers including acute phase proteins (APP) and micro-ribonucleic acids (miRNAs) in serum or plasma. miRNAs are novel targets for elucidating molecular mechanisms of disease because of their differential expression during pathological, and in healthy states. Changes in miRNA profiles during a disease challenge may be reflected in plasma. Studies show that gel-based two-dimensional electrophoresis (2-DE) coupled with either matrix-assisted laser desorption/ionisation time-of-flight mass spectrometry (MALDI-TOF MS) or liquid chromatography–mass spectrometry (LC-MS/MS) are currently the most used methods for proteome characterisation. Further evidence suggests that proteomic investigations are preferentially shifting from 2-DE to non-gel based LC-MS/MS coupled with data extraction by sequential window acquisition of all theoretical fragment-ion spectra (SWATH) approaches that are able to identify a wider range of proteins. Enzyme-linked immunosorbent assay (ELISA), quantitative real-time polymerase chain reaction (qRT-PCR), and most recently proteomic methods have been used to quantify low abundance proteins such as cytokines. qRT-PCR and next generation sequencing (NGS) are used for the characterisation of miRNA. Proteogenomic approaches for detecting APP and novel miRNA profiling are essential in understanding the selective resistance to endotoxin in sheep. The results of these methods could help in understanding similar pathology in humans. It might also be helpful in the development of physiological and diagnostic screening assays for determining experimental inclusion and endpoints, and in clinical trials in future.
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Affiliation(s)
- Saul Chemonges
- The Institute of Health and Biomedical Innovation (IHBI), Queensland University of Technology, Brisbane, QLD, Australia.
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Meling S, Bårdsen K, Ulvund MJ. Presence of an acute phase response in sheep with clinical classical scrapie. BMC Vet Res 2012; 8:113. [PMID: 22805457 PMCID: PMC3410797 DOI: 10.1186/1746-6148-8-113] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2012] [Accepted: 07/17/2012] [Indexed: 01/08/2023] Open
Abstract
Background Work with experimental scrapie in sheep has been performed on-site for many years including studies on PrPSc dissemination and histopathology of organs and tissues both at preclinical and clinical stages. In this work serum was sampled at regular intervals from lambs which were infected immediately after birth and from parallel healthy controls, and examined for acute phase proteins. In contrast to earlier experiments, which extensively studied PrPSc dissemination and histopathology in peripheral tissues and brain, this experiment is focusing on examination of serum for non-PrPSc markers that discriminates the two groups, and give insight into other on-going processes detectable in serum samples. Results There was clear evidence of an acute phase response in sheep with clinical scrapie, both experimental and natural. All the three proteins, ceruloplasmin, haptoglobin and serum amyloid A, were increased at the clinical stage of scrapie. Conclusion There was evidence of a systemic measurable acute phase response at the clinical terminal end-stage of classical scrapie.
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Affiliation(s)
- Siv Meling
- Norwegian School of Veterinary Science, Department of Production Animal Clinical Sciences, Section for Small Ruminant Research, Kyrkjevegen 332-334, N-4325, Sandnes, Norway.
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Abstract
Acute phase proteins (APP) were first identified in the early 1900s as early reactants to infectious disease. They are now understood to be an integral part of the acute phase response (APR) which is the cornerstone of innate immunity. APP have been shown to be valuable biomarkers as increases can occur with inflammation, infection, neoplasia, stress, and trauma. All animals--from fish to mammals--have demonstrable APP, but the type of major APP differs by species. While the primary application of these proteins in a clinical setting is prognostication, studies in animals have demonstrated relevance to diagnosis and detection and monitoring for subclinical disease. APP have been well documented in laboratory, companion, and large animals. With the advent of standardized and automated assays, these biomarkers are available for use in all fields of veterinary medicine as well as basic and clinical research.
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Lepherd ML, Canfield PJ, Hunt GB, Thomson PC, Bosward KL. Assessment of the short-term systemic effect of and acute phase response to mulesing and other options for controlling breech flystrike in Merino lambs. Aust Vet J 2011; 89:19-26. [DOI: 10.1111/j.1751-0813.2010.00668.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Lepherd ML, Canfield PJ, Hunt GB, Bosward KL. Haematological, biochemical and selected acute phase protein reference intervals for weaned female Merino lambs. Aust Vet J 2009; 87:5-11. [DOI: 10.1111/j.1751-0813.2008.00382.x] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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