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Sousa LN, Winter IC, Varela DD, Luvison EZ, Guzmán JFC, Machado AMV, Figueiredo RDV, Pena GT, dos Santos ACS, Faleiros RR, Carvalho ADM. Lidocaine's Ineffectiveness in Mitigating Lipopolysaccharide-Induced Pain and Peristaltic Effects in Horses. Animals (Basel) 2024; 14:3147. [PMID: 39518869 PMCID: PMC11545326 DOI: 10.3390/ani14213147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2024] [Revised: 10/13/2024] [Accepted: 10/24/2024] [Indexed: 11/16/2024] Open
Abstract
The present study involved seven horses in a randomized crossover clinical trial to evaluate the effect of lidocaine on horses with induced endotoxemia. Horses received intravenous lidocaine (1.5 mg/kg bolus, followed by 0.05 mg/kg bwt/min) or placebo (0.9% sodium chloride at the same manner) one hour before LPS administration (0.03 μg/kg, IV infusion over 30 min). We monitored clinic and hematologic parameters, abdominal auscultation, ultrasound, and pain over time. No relevant clinical differences existed between treatments regarding peristalsis, abdominal pain, or any other parameters before and after endotoxemia induction. These findings do not support the clinical use of lidocaine to mitigate abdominal pain and intestinal hypomotility promoted by endotoxemia in horses.
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Affiliation(s)
- Lara Nunes Sousa
- EQUINOVA Research Group, Department of Veterinary Medicine and Surgery, Veterinary School, Federal University of Minas Gerais (UFMG), Belo Horizonte 31270-901, Brazil; (I.C.W.); (R.R.F.); (A.d.M.C.)
| | - Isabella Caixeta Winter
- EQUINOVA Research Group, Department of Veterinary Medicine and Surgery, Veterinary School, Federal University of Minas Gerais (UFMG), Belo Horizonte 31270-901, Brazil; (I.C.W.); (R.R.F.); (A.d.M.C.)
| | - Diego Duarte Varela
- EQUINOVA Research Group, Department of Veterinary Medicine and Surgery, Veterinary School, Federal University of Minas Gerais (UFMG), Belo Horizonte 31270-901, Brazil; (I.C.W.); (R.R.F.); (A.d.M.C.)
| | - Eduarda Zancanaro Luvison
- EQUINOVA Research Group, Department of Veterinary Medicine and Surgery, Veterinary School, Federal University of Minas Gerais (UFMG), Belo Horizonte 31270-901, Brazil; (I.C.W.); (R.R.F.); (A.d.M.C.)
| | - Juan Felipe Colmenares Guzmán
- Veterinary School, Federal University of Minas Gerais (UFMG), Belo Horizonte 31270-901, Brazil (A.M.V.M.); (A.C.S.d.S.)
| | - Ana Moutinho Vilella Machado
- Veterinary School, Federal University of Minas Gerais (UFMG), Belo Horizonte 31270-901, Brazil (A.M.V.M.); (A.C.S.d.S.)
| | | | - Gabriel Tavares Pena
- Veterinary School, Federal University of Minas Gerais (UFMG), Belo Horizonte 31270-901, Brazil (A.M.V.M.); (A.C.S.d.S.)
| | - Ana Clara Silva dos Santos
- Veterinary School, Federal University of Minas Gerais (UFMG), Belo Horizonte 31270-901, Brazil (A.M.V.M.); (A.C.S.d.S.)
| | - Rafael Resende Faleiros
- EQUINOVA Research Group, Department of Veterinary Medicine and Surgery, Veterinary School, Federal University of Minas Gerais (UFMG), Belo Horizonte 31270-901, Brazil; (I.C.W.); (R.R.F.); (A.d.M.C.)
- CNPq Research Fellow, National Council for Scientific and Technological Development (CNPq), Brasília 71605-001, Brazil
| | - Armando de Mattos Carvalho
- EQUINOVA Research Group, Department of Veterinary Medicine and Surgery, Veterinary School, Federal University of Minas Gerais (UFMG), Belo Horizonte 31270-901, Brazil; (I.C.W.); (R.R.F.); (A.d.M.C.)
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Rassouli A, Shihmani B, Mehrzad J, Shokrpoor S. The immunomodulatory effect of minocycline on gene expression of inflammation related cytokines in lipopolysaccharide-treated human peripheral blood mononuclear cells. Anim Biotechnol 2023; 34:2159-2165. [PMID: 35622407 DOI: 10.1080/10495398.2022.2077743] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
To evaluate the immunomodulatory effect of minocycline, the present study was carried out on the gene expression of toll-like receptor type-4 (TLR4) and some pro-inflammatory (IL-1β, IL-6) and anti-inflammatory cytokines (IL-10) associated with lipopolysaccharide (LPS) -induced inflammation in human peripheral blood mononuclear cells (PBMCs). The PBMCs were collected and then 5.4 × 106 PBMCs/mL were used in eight groups as follows: control group (only media), LPS group (only LPS), methylprednisolone (Pred) group (LPS plus Pred), meloxicam (Melo) group (LPS plus Melo), three minocycline groups [M1, M5 and M25] (LPS plus 1, 5, and 25 µg/mL minocycline, respectively) and minocycline control (MC) group (5 µg/mL minocycline). After incubation for 24 h, the PBMCs were subjected to quantitative PCR assays. Gene expression levels of TLR4 were not changed in any groups. The IL-1β levels were increased in the LPS group but the increases were much more intense in the other groups except Pred group. Compared with control group, IL-6 levels increased significantly in Melo, M1 and M25 groups. Significant increases of IL-10 levels were also observed in Melo, M25 and MC groups. It can be concluded that minocycline had dual pro- and anti-inflammatory activities with potential clinical immunomodulatory effects.
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Affiliation(s)
- Ali Rassouli
- Pharmacology Division, Department of Comparative Biosciences, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| | - Basim Shihmani
- Department of Comparative Biosciences, University of Tehran, Tehran, Iran
| | - Jalil Mehrzad
- Department of Microbiology and Immunology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| | - Sara Shokrpoor
- Department of Pathology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
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Shihmani B, Rassouli A, Mehrzad J, Shokrpoor S. The anti-inflammatory effects of minocycline on lipopolysaccharide-induced paw oedema in rats: a histopathological and molecular study. Inflammopharmacology 2023:10.1007/s10787-023-01236-7. [PMID: 37119392 DOI: 10.1007/s10787-023-01236-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Accepted: 04/10/2023] [Indexed: 05/01/2023]
Abstract
Minocycline is a semi-synthetic antimicrobial agent with claimed anti-inflammatory properties reported from different experimental models. This study was aimed to evaluate the anti-inflammatory effects of minocycline, compared to the actions of two common anti-inflammatory agents, on lipopolysaccharide (LPS)-induced paw oedema through some clinical, histopathological, haematological and molecular analyses. Forty-eight rats were divided into eight groups (n = 6). In control group (Ctrl), each animal was injected with normal saline into its sub-plantar region of hind paw. In groups 2-7, hind paw oedema was induced by injection of LPS. One hour before injections, groups 1 (Ctrl) and 2 (LPS) were treated orally with distilled water, 3 and 4 with methylprednisolone (Pred) and meloxicam (Melo) and 5-7 with minocycline in doses of 50, 150 and 450 mg/kg (M50, M150 and M450, respectively). The 8th group (MC) was given minocycline (150 mg/kg) orally and normal saline was injected into sub-plantar region. Paw swelling and body temperature were assessed at 0, 2, 4, 6 and 24 h post-injections. At 24 h, samples of blood and liver, kidney, spleen and hind paw tissues were taken for haematological and histopathological examinations. Some samples of the paw were also obtained for molecular analysis of some inflammatory-related cytokines at mRNA level. Paw swelling and body temperature increased in all LPS-injected groups 2 h post-injection. In LPS group, they remained significantly increased up to 24 h; however, these parameters decreased to normal in Pred, Melo and all minocycline groups. The histological findings showed mild-to-moderate signs of inflammation in tissue samples of groups 2-6, but not in group M450. Additionally, gene expression of pro-inflammatory cytokines (IL-1β and IL-6) increased significantly in LPS group compared to other groups. In conclusion, this study supports the role of minocycline as an anti-inflammatory agent with effects comparable to those of meloxicam and methylprednisolone.
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Affiliation(s)
- Basim Shihmani
- Pharmacology Division, Department of Comparative Biosciences, Faculty of Veterinary Medicine, University of Tehran, Tehran, 1419963114, Iran
| | - Ali Rassouli
- Pharmacology Division, Department of Comparative Biosciences, Faculty of Veterinary Medicine, University of Tehran, Tehran, 1419963114, Iran.
| | - Jalil Mehrzad
- Department of Microbiology and Immunology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| | - Sara Shokrpoor
- Department of Pathology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
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Samimi AS, Poostfroush S, Samimi K, Tajik J. Comparative anti‐inflammatory effects of insulin and dexamethasone on cardiovascular biomarkers and antioxidants in miniature donkeys subjected to induced carbohydrate overload. EQUINE VET EDUC 2021. [DOI: 10.1111/eve.13524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- A. S. Samimi
- Department of Clinical Sciences Faculty of Veterinary Medicine Shahid Bahonar University of Kerman Kerman Iran
| | | | | | - J. Tajik
- Department of Clinical Sciences Faculty of Veterinary Medicine Shahid Bahonar University of Kerman Kerman Iran
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Energy hormone response to fasting-induced dyslipidemia in obese and non-obese donkeys. Vet J 2021; 271:105652. [PMID: 33840485 DOI: 10.1016/j.tvjl.2021.105652] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Revised: 02/15/2021] [Accepted: 03/01/2021] [Indexed: 12/21/2022]
Abstract
Metabolic and endocrine disorders, such as dyslipidemia, are common in donkeys. Negative energy balance due to fasting, stressful conditions, or disease is a major trigger for fat mobilization often leading to dyslipidemia. The hormonal response to fasting has not been well characterized in donkeys. Therefore, this work aimed to study variations in insulin, glucagon, leptin, total adiponectin, ghrelin, and insulin-like growth factor-1 concentrations, insulin-to-glucagon (IGR) and glucagon-to-insulin (GIR) molar ratios, and lipid and carbohydrate parameters during a 66 h fasting period in 8 adult donkeys, and to determine differences depending on body condition. Obese donkeys developed earlier lipid mobilization (increased plasma total triglyceride and total cholesterol concentrations) compared to non-obese donkeys. Plasma glucose and leptin concentrations decreased in obese animals. After 60 h fasting, obese donkeys showed a significant increase in glucagon and decrease in leptin. GIR significantly increased, while insulin and IGR decreased in both groups. These findings support faster lipid mobilization in response to negative energy status in obese donkeys during fasting, which could be linked to greater glucagonemia and could explain the predisposition of these animals to dyslipidemia.
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Perez-Ecija A, Buzon-Cuevas A, Aguilera-Aguilera R, Gonzalez-De Cara C, Mendoza Garcia FJ. Reference intervals of acute phase proteins in healthy Andalusian donkeys and response to experimentally induced endotoxemia. J Vet Intern Med 2020; 35:580-589. [PMID: 33336874 PMCID: PMC7848381 DOI: 10.1111/jvim.16015] [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: 06/29/2020] [Revised: 12/07/2020] [Accepted: 12/07/2020] [Indexed: 11/28/2022] Open
Abstract
BACKGROUND Assessment of acute phase proteins (APPs) may allow prompt detection of diseases in donkeys, that otherwise may be missed because of the stoic behavior of donkeys. Reference intervals (RIs) of APPs measured using immunoassays and a comparison of the response of these biomarkers to a controlled inflammatory insult are lacking in donkeys. OBJECTIVES (a) To describe the RIs for APPs in healthy Andalusian donkeys, (b) to study the effects of sex and age on APPs, and (c) to assess the early response of APPs to experimentally induced endotoxemia. ANIMALS Seventy-three healthy Andalusian donkeys (67 for RIs and 6 for endotoxemia). METHODS Serum amyloid A (SAA), haptoglobin (Hp), C-reactive protein (CRP), ceruloplasmin (Cp), α1-acid glycoprotein (AGP), procalcitonin (PCT), ferritin (Ft), and fibrinogen (Fb) RIs were determined. Endotoxemia was induced and samples for APP determination were obtained at regular intervals for 4 hours. RESULTS The RIs in Andalusian donkeys were: SAA (0.1-0.6 mg/L), Hp (75-2261 mg/L), CRP (1.3-7.0 mg/L), Cp (0-745 mg/L), AGP (0-884 mg/L), PCT (0-504 pg/mL), Ft (26.9-31.8 μg/L), and Fb (115-466 mg/dL). Concentrations of SAA were higher (P < .05) in jacks. Donkeys <5 years old had higher Cp, AGP, and PCT compared to older donkeys. Concentrations of SAA and Hp were significantly increased in endotoxemic donkeys from 2 hours postinduction. CONCLUSIONS AND CLINICAL IMPORTANCE We illustrated the importance of using species-specific RIs for APPs in donkeys and the effect of age and sex on APP concentrations. Concentrations of SAA and Hp appear to be the most useful biomarkers in donkeys in the early stages of endotoxemia.
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Affiliation(s)
| | - Antonio Buzon-Cuevas
- Department of Animal Medicine and Surgery, University of Cordoba, Cordoba, Spain
| | | | - Carlos Gonzalez-De Cara
- Department of Pathology and Infectious Diseases, University of Surrey, Guildford, United Kingdom
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Wright S. Highlights of recent clinically relevant papers. EQUINE VET EDUC 2020. [DOI: 10.1111/eve.13401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Perez-Ecija A, Buzon-Cuevas A, Aguilera-Aguilera R, Gonzalez-De Cara CA, Mendoza FJ. Blood Storage Conditions Affect Hematological Analysis in Samples From Healthy Donkeys and Donkeys With Experimentally-Induced Endotoxemia. Front Vet Sci 2020; 7:640. [PMID: 33134340 PMCID: PMC7511718 DOI: 10.3389/fvets.2020.00640] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Accepted: 08/05/2020] [Indexed: 11/13/2022] Open
Abstract
Preanalytical factors such as storage time and temperature are proved to induce marked artifactual changes in hematological parameters in horses, small animals and humans. These errors can mirror findings typical of endotoxemia, leading to dangerous misdiagnosis. Since donkeys are common in warm climates and remote regions, blood samples from this species can be subjected to long lasting travels from the farm to the nearest laboratory, frequently under suboptimal conditions. Moreover, as other equids, donkeys are prone to suffer endotoxemia. Nonetheless, stability has not been evaluated in samples for hematology in this species. The aim of this study was to characterize the effect of temperature and storage time in hematological parameters from healthy donkeys and donkeys with induced endotoxemia. Blood samples were collected from six healthy female Andalusian donkeys and stored for 6, 12, 24, and 48 h at several temperatures (4, 24, and 35°C). Endotoxemia was induced in the same animals by an intravenous LPS infusion and samples obtained 30 min post-infusion were handled similarly. Hematological analysis was performed using a laser-based analyzer and blood smear examination. Storage at 24°C caused significant neutropenia after 48 h as well as morphological changes typical of endotoxemia in blood from healthy donkeys as soon as 24 h post-storage. Samples kept at 35°C displayed more profound and earlier artifactual variations. Conservation at 4°C did not cause any significant change in blood parameters. Prolonged (48 h) storage of samples from animals with induced endotoxemia at 24 and 35°C accentuated pre-existing leukopenia and neutropenia. These findings highlight that donkey samples should be stored at 4°C, instead of 24°C as recommended for horses. Moreover, blood smear interpretation should be cautious in samples stored for longer than 24 h and could be misleading when blood is kept at 35°C.
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Affiliation(s)
| | - Antonio Buzon-Cuevas
- Department of Animal Medicine and Surgery, University of Cordoba, Cordoba, Spain
| | | | | | - Francisco J Mendoza
- Department of Animal Medicine and Surgery, University of Cordoba, Cordoba, Spain
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Mendoza Garcia FJ, Gonzalez-De Cara C, Aguilera-Aguilera R, Buzon-Cuevas A, Perez-Ecija A. Meloxicam ameliorates the systemic inflammatory response syndrome associated with experimentally induced endotoxemia in adult donkeys. J Vet Intern Med 2020; 34:1631-1641. [PMID: 32463537 PMCID: PMC7379049 DOI: 10.1111/jvim.15783] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Revised: 04/03/2020] [Accepted: 04/03/2020] [Indexed: 11/26/2022] Open
Abstract
Background Little information is available about endotoxemia in donkeys. Characterizing the systemic inflammatory response (SIRS) to lipopolysaccharide (LPS) in donkeys would provide valuable clinical and therapeutic information. The effects of meloxicam on endotoxemia have not been studied in this species. Objectives To study the pathophysiology and gene expression associated with experimentally induced endotoxemia, and evaluate the effects of meloxicam on experimentally induced endotoxemia in donkeys and in equine monocyte cultures. Animals Six healthy adult female donkeys. Methods Endotoxemia was induced by an IV infusion of LPS for 30 minutes. Animals either received 20 mL of saline or 0.6 mg/kg of meloxicam IV after LPS infusion. The experiments lasted 6 hours. Blood samples were collected serially for hematology, serum biochemistry, interleukin measurement, and leukocyte gene expression analysis. Vital signs were recorded throughout the study. Monocyte cultures were used to test the effects of meloxicam on LPS‐activated monocytes. Results Lipopolysaccharide induced fever, leukopenia, and neutropenia of similar magnitude in both groups, but meloxicam attenuated increases in plasma lactate, tumor necrosis factor‐alpha (TNFα), and interleukin 1β concentrations compared to controls. No differences were detected between groups for cytokine mRNA expression. Furthermore, meloxicam decreased TNFα release in LPS‐activated monocyte cultures. Conclusions and Clinical Importance Meloxicam could be a feasible option for the treatment of endotoxemia and SIRS in donkeys. Additional studies are necessary to investigate possible meloxicam‐related posttranscriptional regulation and to compare this drug with other nonsteroidal anti‐inflammatory drugs (NSAIDs) in animals with endotoxemia.
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Affiliation(s)
- Francisco Javier Mendoza Garcia
- Department of Animal Medicine and Surgery, University of Cordoba, Campus Rabanales, Road Madrid-Cadiz km 396, 14104, Cordoba, Spain
| | - Carlos Gonzalez-De Cara
- Department of Animal Medicine and Surgery, University of Cordoba, Campus Rabanales, Road Madrid-Cadiz km 396, 14104, Cordoba, Spain
| | | | - Antonio Buzon-Cuevas
- Department of Animal Medicine and Surgery, University of Cordoba, Campus Rabanales, Road Madrid-Cadiz km 396, 14104, Cordoba, Spain
| | - Alejandro Perez-Ecija
- Department of Animal Medicine and Surgery, University of Cordoba, Campus Rabanales, Road Madrid-Cadiz km 396, 14104, Cordoba, Spain
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