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Ciftci O, Müller LM, Jäggle LM, Lehmann C, Kneilmann C, Stierstorfer B, Roy U, Witsch EJ. Cross-reactivity of human monoclonal antibodies with canine peripheral blood mononuclear cells. Vet Immunol Immunopathol 2023; 259:110578. [PMID: 36965292 DOI: 10.1016/j.vetimm.2023.110578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 03/07/2023] [Accepted: 03/11/2023] [Indexed: 03/19/2023]
Abstract
In drug development, the dog is often used as a model for non-rodent preclinical safety studies. In particular, immunophenotyping in dogs can be important to characterize the toxicological profile of a test item. A wide range of antibodies specific to surface antigens is needed, however, commercially available antibodies to dog are scarce. To date, numerous studies have reported the cross-reactivity of human monoclonal antibodies with canine peripheral blood mononuclear cells (PBMC). In this study, we aimed to increase the number of canine-specific antibodies and took a rather novel approach to further determine cross-reactivity of 378 human recombinant antibodies lacking Fc regions to surface antigens on canine PBMC. The screening resulted in 30 human monoclonal antibodies well reactive to canine PBMC. Sequence homology of the targeted human and canine antigens was analyzed with Basic Local Alignment Search Tool. Thirteen human cross-reactive antibodies of interest were analyzed with cells from canine whole blood in combination with lineage markers. Finally, ten antibodies were identified as useful markers for the application in dog. Except for CD27, the remaining nine antibodies are already commercially available human cross-reactive antibodies. This study provides a new source for all ten antibodies described here.
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Affiliation(s)
- Oktay Ciftci
- Department of Non Clinical Drug Safety, Boehringer Ingelheim GmbH & Co. KG, Birkendorfer Strasse 65, 88397 Biberach, Germany
| | - Laura Mara Müller
- Department of Non Clinical Drug Safety, Boehringer Ingelheim GmbH & Co. KG, Birkendorfer Strasse 65, 88397 Biberach, Germany
| | - Lisa-Marie Jäggle
- Department of Non Clinical Drug Safety, Boehringer Ingelheim GmbH & Co. KG, Birkendorfer Strasse 65, 88397 Biberach, Germany
| | - Christine Lehmann
- Department of Non Clinical Drug Safety, Boehringer Ingelheim GmbH & Co. KG, Birkendorfer Strasse 65, 88397 Biberach, Germany
| | - Christine Kneilmann
- Department of Non Clinical Drug Safety, Boehringer Ingelheim GmbH & Co. KG, Birkendorfer Strasse 65, 88397 Biberach, Germany
| | - Birgit Stierstorfer
- Department of Non Clinical Drug Safety, Boehringer Ingelheim GmbH & Co. KG, Birkendorfer Strasse 65, 88397 Biberach, Germany
| | - Urmi Roy
- Department of Non Clinical Drug Safety, Boehringer Ingelheim GmbH & Co. KG, Birkendorfer Strasse 65, 88397 Biberach, Germany
| | - Esther Julia Witsch
- Department of Non Clinical Drug Safety, Boehringer Ingelheim GmbH & Co. KG, Birkendorfer Strasse 65, 88397 Biberach, Germany.
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Analysis of the Effect of Fast Recovery Surgery Concept on Perioperative Nursing Care of Patients with Radical Resection of Cervical Cancer and Its Influence on Psychological Status. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2022; 2022:2023159. [PMID: 35983010 PMCID: PMC9381187 DOI: 10.1155/2022/2023159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Revised: 06/01/2022] [Accepted: 06/03/2022] [Indexed: 11/17/2022]
Abstract
Objective To explore the applied effect of fast-track surgery concept in the perioperative nursing of patients undergoing radical cervical cancer surgery and its influence on mental state. Methods The clinical data of 110 patients undergoing radical cervical cancer surgery in our hospital from May 2015 to May 2017 were retrospectively analyzed, and they were randomly divided into a research group (n = 55) and a reference group (n = 55). The reference group received routine clinical nursing, and the research group received fast-track surgical nursing. Then, we compared their nursing effect and influence on the mental state of patients in the two groups. Results The Karnofsky performance status (KPS) scores of patients in the two groups after intervention were significantly lower than those before the intervention (P < 0.001), and after intervention, patients in the research group had significantly lower KPS scores as compared to patients in the reference group (P < 0.001). There was a significant decrease in the self-rating anxiety scale (SAS) scores and self-rating depression scale (SDS) scores of patients in the two groups after intervention in comparison with before intervention (P < 0.001), and patients in the research group after intervention had significantly lower SAS and SDS scores compared to the reference group (P < 0.001). Patients in the research group spent short time on expelling gas, eating, and getting out of bed as compared to the reference group (P < 0.001); after intervention, compared to patients in the reference group, patients in the research group had significantly higher scores in cognitive function, emotional function, social function, and physical function (P < 0.05). There was no significant difference in IgA, IgM, and IgG levels before intervention (P > 0.05). After intervention, the IgA, IgM, and IgG levels of patients in the two groups were all lower than before intervention, and patients in the research group had significantly higher IgA, IgM, and IgG levels as compared to the reference group (P < 0.001); the complication rate of patients in the research group was significantly lower than that in the reference group (P < 0.05). Conclusion The fast-track surgery concept effectively helps improve the negative emotion of patients, shorten recovery time, improve quality of life, and reduce the impact on immune function in the radical cervical cancer surgery, and it is worthy of promotion and application, with a high safety.
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Araki J, Nishizawa Y, Fujita N, Sato T, Lizuka T, Komata M, Hatayama N, Yakura T, Hirai S, Tashiro K, Galvão FHF, Nakamura T, Nakagawa M, Naito M. Anorectal Transplantation: The First Long-term Success in a Canine Model. Ann Surg 2022; 275:e636-e644. [PMID: 33491981 PMCID: PMC8906251 DOI: 10.1097/sla.0000000000004141] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
Abstract
OBJECTIVE Anorectal transplantation is a challenging procedure but a promising option for patients with weakened or completely absent anorectal function. SUMMARY BACKGROUND DATA We constructed a canine model of anorectal transplantation, evaluated the long-term outcomes, and controlled rejection and infection in allotransplantation. METHODS In the pudendal nerve function study, 6 dogs were randomly divided into 2 groups, transection and anastomosis, and were compared with a control using anorectal manometry, electromyography, and histological examination. In the anorectal transplantation model, 4 dogs were assigned to 4 groups: autotransplant, allotransplant with immunosuppression, allotransplant without immunosuppression, and normal control. Long-term function was evaluated by defecography, videography, and histological examination. RESULTS In the pudendal nerve function study, anorectal manometry indicated that the anastomosis group recovered partial function 6 months postoperatively. Microscopically, the pudendal nerve and the sphincter muscle regenerated in the anastomosis group. Anorectal transplantation was technically successful with a 3-stage operation: colostomy preparation, anorectal transplantation, and stoma closure. The dog who underwent allotransplantation and immunosuppression had 2 episodes of mild rejection, which were reversed with methylprednisolone and tacrolimus. The dog who underwent allotransplantation without immunosuppression had a severe acute rejection that resulted in graft necrosis. Successful dogs had full defecation control at the end of the study. CONCLUSIONS We describe the critical role of the pudendal nerve in anorectal function and the first long-term success with anorectal transplantation in a canine model. This report is a proof-of-concept study for anorectal transplantation as a treatment for patients with an ostomy because of anorectal dysfunction.
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Affiliation(s)
- Jun Araki
- Division of Plastic and Reconstructive Surgery, Shizuoka Cancer Center Hospital, Shizuoka, Japan
| | - Yuji Nishizawa
- Department of Colorectal Surgery, National Cancer Center Hospital East, Kashiwa, Japan
| | - Naoki Fujita
- Laboratory of Veterinary Surgery, Graduate School of Agricultural and Life Science, The University of Tokyo, Tokyo, Japan
| | | | - Tomoya Lizuka
- Laboratory of Veterinary Surgery, Graduate School of Agricultural and Life Science, The University of Tokyo, Tokyo, Japan
| | - Masatoshi Komata
- Laboratory of Veterinary Surgery, Graduate School of Agricultural and Life Science, The University of Tokyo, Tokyo, Japan
| | | | - Tomiko Yakura
- Department of Anatomy, Aichi Medical University, Aichi, Japan
| | - Shuichi Hirai
- Department of Anatomy, Aichi Medical University, Aichi, Japan
| | - Kensuke Tashiro
- Department of Plastic and Reconstructive Surgery, Juntendo University, Tokyo, Japan
| | - Flavio H F Galvão
- Laboratory of Liver Transplantation and Experimental Surgery (LIM-37), Division of Liver Transplantation, Department of Gastroenterology, Faculdade de Medicina da Universidade de São Paulo (FMUSP), São Paulo, Brazil
| | - Tatsuo Nakamura
- Department of Bioartificial Organs, Institute for Frontier Medical Science, Kyoto University, Kyoto, Japan
| | - Masahiro Nakagawa
- Division of Plastic and Reconstructive Surgery, Shizuoka Cancer Center Hospital, Shizuoka, Japan
| | - Munekazu Naito
- Department of Anatomy, Aichi Medical University, Aichi, Japan
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Goggs R, Robbins SN, LaLonde‐Paul DM, Menard JM. Serial analysis of blood biomarker concentrations in dogs with pneumonia, septic peritonitis, and pyometra. J Vet Intern Med 2022; 36:549-564. [PMID: 35103342 PMCID: PMC8965213 DOI: 10.1111/jvim.16374] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 01/18/2022] [Accepted: 01/20/2022] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND Prolonged antimicrobial drug (AMD) treatment is associated with antimicrobial resistance development. Biomarker measurement may aid treatment decision-making. OBJECTIVES Investigate temporal changes in blood biomarker concentrations in dogs undergoing treatment for pulmonary and intra-abdominal infections; compare time to biomarker concentration normalization with duration of clinician-directed AMD treatment. ANIMALS Forty-two client-owned dogs with pneumonia (n = 22), septic peritonitis (n = 10), or pyometra (n = 10). METHODS Plasma concentrations of C-reactive protein (CRP), serum amyloid A (SAA), haptoglobin, procalcitonin, nucleosomes, cell-free DNA (cfDNA), high-mobility group box-1 (HMGB1), CC-motif chemokine ligand-2 (CCL2), CXC-motif chemokine ligand-8 (CXCL8), and keratinocyte chemoattractant-like (KC-Like) were quantitated in samples collected on days 1, 3, 7, 14, 28, and 60. Treatment was directed by clinicians blinded to biomarker concentrations. RESULTS Concentrations of CCL2, CRP, and KC-Like were maximal on D1, concentrations of SAA, cfDNA, HMGB1, and nucleosomes were maximal on D3 and haptoglobin concentrations were maximal on D7. These maximal concentrations were significantly different from those on D60. Concentrations of CRP and SAA decreased by 80% from peak and into respective reference intervals before AMDs were discontinued. For CRP, the median (interquartile range [IQR]) times to 20% peak and normal were 7 (6-9) and 7 (6-12) days, respectively, and for SAA they were 4 (4, 5) and 6 (5-8) days, respectively, compared to a median (IQR) duration of AMD prescribing of 16 (12-23) days (all P < .0001). CONCLUSIONS AND CLINICAL IMPORTANCE Biomarker concentrations normalized within 7 to 14 days. Serial measurements of CRP and SAA might aid identification of disease resolution and could help guide AMD prescription decision-making.
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Affiliation(s)
- Robert Goggs
- Department of Clinical Sciences, College of Veterinary MedicineCornell UniversityIthacaNew YorkUSA
| | - Sarah N. Robbins
- Department of Clinical Sciences, College of Veterinary MedicineCornell UniversityIthacaNew YorkUSA
| | - Denise M. LaLonde‐Paul
- Department of Clinical Sciences, College of Veterinary MedicineCornell UniversityIthacaNew YorkUSA
| | - Julie M. Menard
- Department of Veterinary Clinical and Diagnostic Sciences, Faculty of Veterinary MedicineUniversity of CalgaryCalgaryAlbertaCanada
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Shaw KE, Bersenas AM, Bateman SW, Blois SL, Guieu LVS, Wood RD. Use of serum hyaluronic acid as a biomarker of endothelial glycocalyx degradation in dogs with septic peritonitis. Am J Vet Res 2021; 82:566-573. [PMID: 34166092 DOI: 10.2460/ajvr.82.7.566] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To describe daily changes in serum concentrations of hyaluronic acid (HA), a biomarker of endothelial glycocalyx degradation, in dogs with septic peritonitis and to determine whether relationships exist among serum concentrations of HA and biomarkers of inflammation and patient fluid status. ANIMALS 8 client-owned dogs. PROCEDURES Serum samples that had been collected for a previous study and stored at -80°C were used. Blood samples were collected at admission and daily thereafter during hospitalization and were analyzed for concentrations of HA and interleukins 6, 8, and 10. Patient data including acute patient physiologic and laboratory evaluation score, type and amount of fluids administered daily, and daily CBC and lactate concentration results were recorded. To determine the significant predictors of HA concentration, a general linear mixed model for repeated measures was developed. RESULTS All dogs survived to discharge. Concentrations of HA ranged from 18 to 1,050 ng/mL (interquartile [25th to 75th percentile] range, 49 to 119 ng/mL) throughout hospitalization. Interleukin-6 concentration was a significant predictor of HA concentration as was total administered daily fluid volume when accounting for interleukin-6 concentration. When fluid volume was analyzed independent of inflammatory status, fluid volume was not a significant predictor. Concentrations of HA did not significantly change over time but tended to increase on day 2 or 3 of hospitalization. CONCLUSIONS AND CLINICAL RELEVANCE Results supported the theory that inflammation is associated with endothelial glycocalyx degradation. Dogs recovering from septic peritonitis may become more susceptible to further endothelial glycocalyx damage as increasing fluid volumes are administered.
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Affiliation(s)
- Kaela E Shaw
- From the Department of Clinical Studies, Ontario Veterinary College, University of Guelph, Guelph, ON N1G 2W1, Canada
| | - Alexa M Bersenas
- From the Department of Clinical Studies, Ontario Veterinary College, University of Guelph, Guelph, ON N1G 2W1, Canada
| | - Shane W Bateman
- From the Department of Clinical Studies, Ontario Veterinary College, University of Guelph, Guelph, ON N1G 2W1, Canada
| | - Shauna L Blois
- From the Department of Clinical Studies, Ontario Veterinary College, University of Guelph, Guelph, ON N1G 2W1, Canada
| | - Liz-Valerie S Guieu
- From the Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Tennessee, Knoxville, TN 37996
| | - R Darren Wood
- From the Department of Pathobiology, Ontario Veterinary College, University of Guelph, Guelph, ON N1G 2W1, Canada
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du Preez K, Rautenbach Y, Hooijberg EH, Goddard A. Oxidative burst and phagocytic activity of phagocytes in canine parvoviral enteritis. J Vet Diagn Invest 2021; 33:884-893. [PMID: 34148453 DOI: 10.1177/10406387211025513] [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: 11/17/2022] Open
Abstract
Canine parvoviral enteritis (CPE) is a severe disease characterized by systemic inflammation and immunosuppression. The function of circulating phagocytes (neutrophils and monocytes) in affected dogs has not been fully investigated. We characterized the functional capacity of canine phagocytes in CPE by determining their oxidative burst and phagocytic activities using flow cytometry. Blood was collected from 28 dogs with CPE and 11 healthy, age-matched, control dogs. Oxidative burst activity was assessed by stimulating phagocytes with opsonized Escherichia coli or phorbol 12-myristate 13-acetate (PMA) and measuring the percentage of phagocytes producing reactive oxygen species and the magnitude of this production. Phagocytosis was measured by incubating phagocytes with opsonized E. coli and measuring the percentage of phagocytes containing E. coli and the number of bacteria per cell. Complete blood counts and serum C-reactive protein (CRP) concentrations were also determined. Serum CRP concentration was negatively and positively correlated with segmented and band neutrophil concentrations, respectively. Overall, no differences in phagocyte function were found between dogs with CPE and healthy control dogs. However, infected dogs with neutropenia or circulating band neutrophils had decreased PMA-stimulated oxidative burst activity compared to healthy controls. Additionally, CPE dogs with neutropenia or circulating band neutrophils had decreased PMA- and E. coli-stimulated oxidative burst activity and decreased phagocytosis of E. coli compared to CPE dogs without neutropenia or band neutrophils. We conclude that phagocytes have decreased oxidative burst and phagocytic activity in neutropenic CPE dogs and in CPE dogs with circulating band neutrophils.
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Affiliation(s)
- Kelly du Preez
- Section of Clinical Pathology, Department of Companion Animal Clinical Studies, Faculty of Veterinary Science, University of Pretoria, Pretoria, South Africa
| | - Yolandi Rautenbach
- Section of Clinical Pathology, Department of Companion Animal Clinical Studies, Faculty of Veterinary Science, University of Pretoria, Pretoria, South Africa
| | - Emma H Hooijberg
- Section of Clinical Pathology, Department of Companion Animal Clinical Studies, Faculty of Veterinary Science, University of Pretoria, Pretoria, South Africa
| | - Amelia Goddard
- Section of Clinical Pathology, Department of Companion Animal Clinical Studies, Faculty of Veterinary Science, University of Pretoria, Pretoria, South Africa
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Merrill KM, Hull MB, Stoker A, DeClue AE. In vitro effects of epinephrine, norepinephrine, and dobutamine on lipopolysaccharide-stimulated production of tumor necrosis factor-α, interleukin-6, and interleukin-10 in blood from healthy dogs. Am J Vet Res 2021; 82:374-380. [PMID: 33904806 DOI: 10.2460/ajvr.82.5.374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To determine the in vitro effects of epinephrine, norepinephrine, and dobutamine on lipopolysaccharide (LPS)-stimulated production of tumor necrosis factor-α (TNF-α), interleukin-6 (IL-6), and interleukin-10 (IL-10) in blood from healthy dogs. SAMPLES Blood samples from 9 healthy dogs. PROCEDURES Blood samples were incubated with LPS from Escherichia coli O127:B8 or PBSS (control) for 1 hour. Afterward, the samples were incubated with 10μM epinephrine, norepinephrine, or dobutamine or with saline (0.9% NaCl) solution (control) for 23 hours. Leukocyte viability was assessed by use of trypan-blue exclusion in blood from 2 dogs to ensure cell viability was not altered by the catecholamines. Tumor necrosis factor-α, IL-6, and IL-10 concentrations were measured in the supernatant in duplicate with a canine-specific multiplex bead-based assay. Blood samples from 2 dogs were used to create dose-response curves to evaluate whether the observed cytokine modulation was dependent on catecholamine concentration. RESULTS Incubation of blood with epinephrine and norepinephrine significantly increased LPS-stimulated production of IL-10, compared with the control. Epinephrine and norepinephrine significantly decreased LPS-stimulated production of TNF-α, compared with the control. Epinephrine and norepinephrine did not significantly alter LPS-stimulated production of IL-6. Dobutamine did not alter catecholamine production. CONCLUSIONS AND CLINICAL RELEVANCE Epinephrine and norepinephrine, but not dobutamine, had immunomodulatory effects on LPS-stimulated TNF-α and IL-10 production in blood from healthy dogs in this in vitro model of sepsis. Data suggested that dobutamine may have immune system-sparing effects in dogs with sepsis.
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Celliers A, Rautenbach Y, Hooijberg E, Christopher M, Goddard A. Neutrophil Myeloperoxidase Index in Dogs With Babesiosis Caused by Babesia rossi. Front Vet Sci 2020; 7:72. [PMID: 32133380 PMCID: PMC7040022 DOI: 10.3389/fvets.2020.00072] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2019] [Accepted: 01/28/2020] [Indexed: 11/13/2022] Open
Abstract
Babesiosis caused by the virulent tick-borne hemoprotozoan, Babesia rossi, results in a marked systemic inflammatory host response in dogs. Neutrophils form part of the innate immune response and contains myeloperoxidase (MPO) as the predominant component of the neutrophil lysosomal protein in azurophilic granules. The neutrophil myeloperoxidase index (MPXI), determined on the ADVIA hematology analyzer, is a quantitative estimate of intracellular MPO content. Objectives of this study were to: (a) compare MPXI in dogs with babesiosis with healthy control dogs; (b) compare MPXI in dogs that died from babesiosis with dogs that survived and controls; and (c) correlate the MPXI with the previously determined segmented and band neutrophil count and cytokine concentrations in dogs with babesiosis. Data for 140 dogs naturally infected with B. rossi and 20 healthy control dogs were retrospectively evaluated. Neutrophil counts and MPXI were determined on an ADVIA 2120 analyzer. Cytokine concentrations [interleukin (IL)-2, IL-6, IL-8, IL-10, IL-18, granulocyte-macrophage colony stimulating factor (GM-CSF), and monocyte chemo-attractant protein-1 (MCP-1)] were determined using a canine-specific multiplex immunoassay. The mortality rate of the Babesia-infected dogs was 11% (15/140). MPXI was significantly higher in Babesia-infected dogs (P = 0.033), and in Babesia-infected non-survivors (P = 0.011), compared with healthy control dogs. In Babesia-infected dogs a significant positive correlation was found between MPXI and IL-10 (r = 0.211, P = 0.039) and a significant negative correlation was found between MPXI and IL-8 (r = -0.350, P < 0.001). In Babesia-infected non-survivors, significant positive correlations were found between MPXI and IL-2 (r = 0.616, P = 0.033), IL-6 (r = 0.615, P = 0.033), IL-18 (r = 0.613, P = 0.034), GM-CSF (r = 0.630, P = 0.028), and MCP-1 (r = 0.713, P = 0.009). In Babesia-infected survivors, a significant negative correlation was found between MPXI and IL-8 (r = -0.363, P = 0.001). MPXI was correlated with pro-inflammatory cytokines in Babesia-infected dogs that died. The potential of MPXI as a novel marker of inflammation and prognosis in dogs infected with B. rossi, thus warrants further investigation.
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Affiliation(s)
- Anri Celliers
- Department of Companion Animal Clinical Studies, Faculty of Veterinary Science, University of Pretoria, Pretoria, South Africa
| | - Yolandi Rautenbach
- Department of Companion Animal Clinical Studies, Faculty of Veterinary Science, University of Pretoria, Pretoria, South Africa
| | - Emma Hooijberg
- Department of Companion Animal Clinical Studies, Faculty of Veterinary Science, University of Pretoria, Pretoria, South Africa
| | - Mary Christopher
- Department of Pathology, Microbiology and Immunology, School of Veterinary Medicine, University of California, Davis, Davis, CA, United States
| | - Amelia Goddard
- Department of Companion Animal Clinical Studies, Faculty of Veterinary Science, University of Pretoria, Pretoria, South Africa
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Supraphysiologic parenteral ascorbic acid blunts the inflammatory mediator response to pathogen associated molecular patterns in dogs ex vivo. Res Vet Sci 2019; 124:228-232. [PMID: 30928655 DOI: 10.1016/j.rvsc.2019.03.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Revised: 02/14/2019] [Accepted: 03/10/2019] [Indexed: 12/25/2022]
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Jaffey JA, Amorim J, DeClue AE. Effect of calcitriol on in vitro whole blood cytokine production in critically ill dogs. Vet J 2018; 236:31-36. [PMID: 29871746 DOI: 10.1016/j.tvjl.2018.04.010] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Revised: 04/14/2018] [Accepted: 04/17/2018] [Indexed: 12/20/2022]
Abstract
Hypovitaminosis D has been identified as a predictor of mortality in human beings, dogs, cats and foals. However, the immunomodulatory effects of vitamin D in critically ill dogs has not been evaluated. The aim of this study was to evaluate the effect of calcitriol on cytokine production from whole blood collected from critically ill dogs in vitro. Twelve critically ill dogs admitted to a veterinary intensive care unit (ICU) were enrolled in a prospective cohort study. Whole blood from these dogs was incubated with calcitriol (2×10-7M) or ethanol (control) for 24h. Subsequent to this incubation, lipopolysaccharide (LPS)-stimulated whole blood production of tumor necrosis factor (TNF)-α, interleukin (IL)-6 and IL-10 were measured using a canine-specific multiplex assay. Calcitriol significantly increased LPS-stimulated whole blood production of IL-10 and decreased TNF-α production without significantly altering IL-6 production. There was no significant difference in whole blood cytokine production capacity between survivors and non-survivors at the time of discharge from the ICU or 30days after discharge. These data suggests that calcitriol induces an anti-inflammatory phenotype in vitro in whole blood from critically ill dogs.
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Affiliation(s)
- J A Jaffey
- Comparative Internal Medicine Laboratory, Veterinary Health Center, University of Missouri, 900 East Campus Drive, Columbia, MO 65211, USA
| | - J Amorim
- Comparative Internal Medicine Laboratory, Veterinary Health Center, University of Missouri, 900 East Campus Drive, Columbia, MO 65211, USA
| | - A E DeClue
- Comparative Internal Medicine Laboratory, Veterinary Health Center, University of Missouri, 900 East Campus Drive, Columbia, MO 65211, USA.
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