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Kämpf S, Fenk S, Van Cromvoirt A, Bogdanov N, Hartnack S, Stirn M, Hofmann-Lehmann R, Reichler IM, Bogdanova A. Differences in selected blood parameters between brachycephalic and non-brachycephalic dogs. Front Vet Sci 2023; 10:1166032. [PMID: 37649563 PMCID: PMC10464621 DOI: 10.3389/fvets.2023.1166032] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Accepted: 07/11/2023] [Indexed: 09/01/2023] Open
Abstract
Introduction Cranial and upper-airway anatomy of short-nosed, flat-faced brachycephalic dogs predisposes them to brachycephalic obstructive airway syndrome (BOAS). Periodic apnoea increased inspiratory resistance, and an inability to thermoregulate effectively are characteristic of BOAS, but internationally accepted objective markers of BOAS severity are missing. The objective of this study was to compare the selected blood parameters between non-brachycephalic (NC) and brachycephalic (BC) dogs, exploring the possibility of developing a blood test for BOAS severity grading in the future. Methods We evaluated blood biochemistry, complete blood cell counts, red blood cell (RBC) indices, reticulocyte counts, a blood-born marker of intermittent hypoxia (glutathione, NO production), RBC hydration, deformability, and blood markers of metabolic changes and stress between BC (n = 18) and NC (meso- and dolichocephalic, n = 22) dogs. Results Reticulocyte counts and the abundance of middle-fluorescence immature reticulocytes were significantly (p < 0.05) higher in BC dogs compared to NC dogs. BC dogs had significantly more NO-derived NO2 - /NO3 - in plasma than NC dogs. RBCs of BC dogs were shedding significantly more membrane, as follows from the intensity of eosin maleimide staining, and had a significantly higher mean corpuscular hemoglobin concentration than NC dogs. Intracellular reduced glutathione content in RBCs of BC dogs was significantly lower, while plasma lactate was significantly higher in BC dogs compared to NC dogs. Plasma cholesterol and triglycerides were significantly lower, and cortisol was significantly higher in BC dogs compared to NC dogs. Eosinophil counts were significantly lower and the neutrophil-to-lymphocyte ratio was higher in BC dogs compared to NC dogs. Discussion Taken together, our findings suggest that the brachycephalic phenotype in dogs is associated with alterations at the level of blood cells and, systemically, with oxidation and metabolic changes. The parameters identified within this study should be further investigated for their potential as objective indicators for BOAS.
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Affiliation(s)
- Sandra Kämpf
- Red Blood Cell Research Group, Institute of Veterinary Physiology, Faculty of Vetsuisse, University of Zurich, Zürich, Switzerland
- Center for Clinical Studies (ZKS), Vetsuisse Faculty, University of Zurich, Zürich, Switzerland
- Clinic of Reproductive Medicine, Vetsuisse Faculty, University of Zurich, Zürich, Switzerland
| | - Simone Fenk
- Red Blood Cell Research Group, Institute of Veterinary Physiology, Faculty of Vetsuisse, University of Zurich, Zürich, Switzerland
- Center for Clinical Studies (ZKS), Vetsuisse Faculty, University of Zurich, Zürich, Switzerland
| | - Ankie Van Cromvoirt
- Red Blood Cell Research Group, Institute of Veterinary Physiology, Faculty of Vetsuisse, University of Zurich, Zürich, Switzerland
- Center for Clinical Studies (ZKS), Vetsuisse Faculty, University of Zurich, Zürich, Switzerland
| | - Nikolay Bogdanov
- Red Blood Cell Research Group, Institute of Veterinary Physiology, Faculty of Vetsuisse, University of Zurich, Zürich, Switzerland
- Center for Clinical Studies (ZKS), Vetsuisse Faculty, University of Zurich, Zürich, Switzerland
| | - Sonja Hartnack
- Section of Epidemiology, Vetsuisse Faculty, University of Zurich, Zürich, Switzerland
| | - Martina Stirn
- Clinical Laboratory, Department for Clinical Diagnostics and Services, Vetsuisse Faculty, University of Zurich, Zürich, Switzerland
| | - Regina Hofmann-Lehmann
- Center for Clinical Studies (ZKS), Vetsuisse Faculty, University of Zurich, Zürich, Switzerland
- Clinical Laboratory, Department for Clinical Diagnostics and Services, Vetsuisse Faculty, University of Zurich, Zürich, Switzerland
| | - Iris Margaret Reichler
- Clinic of Reproductive Medicine, Vetsuisse Faculty, University of Zurich, Zürich, Switzerland
| | - Anna Bogdanova
- Red Blood Cell Research Group, Institute of Veterinary Physiology, Faculty of Vetsuisse, University of Zurich, Zürich, Switzerland
- Center for Clinical Studies (ZKS), Vetsuisse Faculty, University of Zurich, Zürich, Switzerland
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2
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Niinikoski I, Himanen S, Tenhunen M, Lilja‐Maula L, Rajamäki MM. Description of a novel method for detection of sleep-disordered breathing in brachycephalic dogs. J Vet Intern Med 2023; 37:1475-1481. [PMID: 37232547 PMCID: PMC10365046 DOI: 10.1111/jvim.16783] [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: 01/10/2023] [Accepted: 05/12/2023] [Indexed: 05/27/2023] Open
Abstract
BACKGROUND Sleep-disordered breathing (SDB), defined as any difficulty in breathing during sleep, occurs in brachycephalic dogs. Diagnostic methods for SDB in dogs require extensive equipment and laboratory assessment. OBJECTIVES To evaluate the usability of a portable neckband system for detection of SDB in dogs. We hypothesized that the neckband is a feasible method for evaluation of SDB and that brachycephaly predisposes to SDB. ANIMALS Twenty-four prospectively recruited client-owned dogs: 12 brachycephalic dogs and 12 control dogs of mesocephalic or dolicocephalic breeds. METHODS Prospective observational cross-sectional study with convenience sampling. Recording was done over 1 night at each dog's home. The primary outcome measure was the obstructive Respiratory Event Index (OREI), which summarized the rate of obstructive SDB events per hour. Additionally, usability, duration of recording, and snore percentage were documented. RESULTS Brachycephalic dogs had a significantly higher OREI value (Hodges-Lehmann estimator for median difference = 3.5, 95% confidence interval [CI] 2.2-6.8; P < .001) and snore percentage (Hodges-Lehmann estimator = 34.2, 95% CI 13.6-60.8; P < .001) than controls. A strong positive correlation between OREI and snore percentage was detected in all dogs (rs = .79, P < .001). The neckband system was easy to use. CONCLUSIONS AND CLINICAL IMPORTANCE Brachycephaly is associated with SDB. The neckband system is a feasible way of characterizing SDB in dogs.
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Affiliation(s)
- Iida Niinikoski
- Department of Equine and Small Animal MedicineUniversity of HelsinkiHelsinkiFinland
| | - Sari‐Leena Himanen
- Faculty of Medicine and Health TechnologyTampere UniversityTampereFinland
- Department of Clinical NeurophysiologyTampere University Hospital, Medical Imaging Centre and Hospital Pharmacy, Pirkanmaa Hospital DistrictTampereFinland
| | - Mirja Tenhunen
- Department of Clinical NeurophysiologyTampere University Hospital, Medical Imaging Centre and Hospital Pharmacy, Pirkanmaa Hospital DistrictTampereFinland
- Department of Medical PhysicsTampere University Hospital, Medical Imaging Centre and Hospital Pharmacy, Pirkanmaa Hospital DistrictTampereFinland
| | - Liisa Lilja‐Maula
- Department of Equine and Small Animal MedicineUniversity of HelsinkiHelsinkiFinland
| | - Minna M. Rajamäki
- Department of Equine and Small Animal MedicineUniversity of HelsinkiHelsinkiFinland
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3
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Erjavec V, Svete AN. Thrombocytosis in brachycephalic dogs with brachycephalic obstructive airway syndrome. VET MED-CZECH 2023; 68:57-61. [PMID: 38332764 PMCID: PMC10847823 DOI: 10.17221/23/2021-vetmed] [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: 02/15/2021] [Accepted: 12/29/2022] [Indexed: 02/10/2024] Open
Abstract
Brachycephalic dogs are prone to a conformation-related respiratory disorder known as brachycephalic obstructive airway syndrome (BOAS). Due to its systemic consequences, BOAS should be considered a systemic disease. The aim of the present study was to investigate platelet count (PLT), mean platelet volume (MPV), and plateletcrit (PCT) in patients with various grades of BOAS and non-brachycephalic dogs. The latter served as a control group. We included 106 patients with BOAS and 41 non-brachycephalic dogs. According to the severity of the disease, BOAS patients were classified into grade 1 (17 dogs), grade 2 (42 dogs), and grade 3 (47 dogs). Thrombocytosis was found in 46% (49/106) of all BOAS patients. High platelet mass was found in 62% (66/106) of all BOAS patients. We found significantly (P < 0.05) higher PLT, MPV, and PCT in BOAS patients of all grades compared to non-brachycephalic dogs. However, further studies are needed to clarify the role of PLT and platelet indices in BOAS and their relationship with inflammation and hypercoagulability.
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Affiliation(s)
- Vladimira Erjavec
- University of Ljubljana, Veterinary Faculty, Small Animal Clinic, Ljubljana, Slovenia
| | - Alenka Nemec Svete
- University of Ljubljana, Veterinary Faculty, Small Animal Clinic, Ljubljana, Slovenia
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4
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Niinikoski I, Kouki S, Koho N, Aromaa M, Holopainen S, Laurila HP, Fastrès A, Clercx C, Lilja-Maula L, Rajamäki MM. Evaluation of VEGF-A and CCL2 in dogs with brachycephalic obstructive airway syndrome or canine idiopathic pulmonary fibrosis and in normocephalic dogs. Res Vet Sci 2022; 152:557-563. [PMID: 36183612 DOI: 10.1016/j.rvsc.2022.09.022] [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: 04/29/2022] [Accepted: 09/21/2022] [Indexed: 11/26/2022]
Abstract
Brachycephalic obstructive airway syndrome (BOAS) and canine idiopathic pulmonary fibrosis (CIPF) of West Highland White Terriers (WHWTs) often cause intermittent or chronic hypoxemia. Our objective was to evaluate serum and bronchoalveolar lavage fluid (BALF) concentrations of hypoxemia-related proinflammatory mediators vascular endothelial growth factor A (VEGF-A) and chemokine (CC motif) ligand 2 (CCL2) in brachycephalic dogs (BDs) and WHWTs with and without CIPF. Additionally, effects of BOAS severity and ageing on these mediators were assessed. 114 BDs (28 English Bulldogs (EBs), 37 French Bulldogs, 49 Pugs), 16 WHWTs with CIPF, 26 healthy WHWTs, and 39 normocephalic control dogs were included. Fifty-four BDs were re-examined after two to three years. Bead-based immunoassay was used for proinflammatory mediator measurements. Compared with controls, significantly higher serum concentrations of VEGF-A were seen in EBs (P = 0.009) and of CCL2 in CIPF and healthy WHWTs (P < 0.001; P = 0.002). BALF samples were available from controls, EBs, and WHWTs. VEGF-A was significantly lower in EBs (P < 0.001) and in CIPF and healthy WHWTs (P = 0.006; P = 0.007) and CCL2 was higher in CIPF WHWTs (P = 0.01) compared with controls. Between visits, only serum VEGF-A significantly decreased in BDs (P < 0.001), but breed, BOAS severity, or its change had no significant effect. In conclusion, in EBs with BOAS proinflammatory changes in VEGF-A were detected in both serum and BALF. Ageing reduced serum VEGF-A in BDs. In WHWTs, our results confirmed earlier findings of CCL2 as an important biomarker for CIPF.
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Affiliation(s)
- I Niinikoski
- Department of Equine and Small Animal Medicine, Faculty of Veterinary Medicine, P.O. Box 57, FI-00014, University of Helsinki, Finland.
| | - S Kouki
- Department of Equine and Small Animal Medicine, Faculty of Veterinary Medicine, P.O. Box 57, FI-00014, University of Helsinki, Finland
| | - N Koho
- Department of Equine and Small Animal Medicine, Faculty of Veterinary Medicine, P.O. Box 57, FI-00014, University of Helsinki, Finland
| | - M Aromaa
- Department of Equine and Small Animal Medicine, Faculty of Veterinary Medicine, P.O. Box 57, FI-00014, University of Helsinki, Finland
| | - S Holopainen
- Department of Equine and Small Animal Medicine, Faculty of Veterinary Medicine, P.O. Box 57, FI-00014, University of Helsinki, Finland
| | - H P Laurila
- Department of Equine and Small Animal Medicine, Faculty of Veterinary Medicine, P.O. Box 57, FI-00014, University of Helsinki, Finland
| | - A Fastrès
- Department of Clinical Sciences, Faculty of Veterinary Medicine, University of Liège, Bd de Colonster 1, 4000 Liège, Belgium
| | - C Clercx
- Department of Clinical Sciences, Faculty of Veterinary Medicine, University of Liège, Bd de Colonster 1, 4000 Liège, Belgium
| | - L Lilja-Maula
- Department of Equine and Small Animal Medicine, Faculty of Veterinary Medicine, P.O. Box 57, FI-00014, University of Helsinki, Finland
| | - M M Rajamäki
- Department of Equine and Small Animal Medicine, Faculty of Veterinary Medicine, P.O. Box 57, FI-00014, University of Helsinki, Finland
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5
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Chen K, Tanner M, Thomason JD. ECG of the Month. J Am Vet Med Assoc 2022; 260:1641-1643. [PMID: 35560127 DOI: 10.2460/javma.21.04.0193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- Kaiwen Chen
- Department of Clinical Sciences, College of Veterinary Medicine, Kansas State University, Manhattan, KS
| | - Matthew Tanner
- Department of Clinical Sciences, College of Veterinary Medicine, Kansas State University, Manhattan, KS
| | - Justin D. Thomason
- Department of Clinical Sciences, College of Veterinary Medicine, Kansas State University, Manhattan, KS
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Facin AC, Uscategui RAR, Maronezi MC, Pavan L, Menezes MP, Montanhim GL, Camacho AA, Feliciano MAR, Moraes PC. Liver and spleen elastography of dogs affected by brachycephalic obstructive airway syndrome and its correlation with clinical biomarkers. Sci Rep 2020; 10:16156. [PMID: 32999366 PMCID: PMC7527336 DOI: 10.1038/s41598-020-73209-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Accepted: 09/14/2020] [Indexed: 12/14/2022] Open
Abstract
The purpose of this study is to determine whether the brachycephalic obstructive airway syndrome (BOAS) is correlated to alterations in liver and spleen elasticity. Forty-eight brachycephalic and 22 mesocephalic dogs were submitted to a BOAS functional assessment, laboratory tests, abdominal ultrasound and liver and spleen Acoustic Radiation Force Impulse (ARFI) elastography. Dogs clinically affected by BOAS had higher values of liver stiffness (p < 0.001) than healthy dogs: medial lobes (1.57 ± 0.37 m/s), left and right lateral lobes (1.54 ± 0.50 m/s, 1.23 ± 0.28 m/s, respectively) and caudate lobe (1.28 ± 0.42 m/s). Compared to the mesocephalic group, the brachycephalic group (BOAS clinically affected and unaffected dogs) had higher spleen (2.51 ± 0.45 m/s; p < 0.001) and liver stiffness (p < 0.001): medial lobes (1.53 ± 0.37 m/s), left and right lateral lobes (1.47 ± 0.47 m/s, 1.20 ± 0.30 m/s, respectively) and caudate lobe (1.23 ± 0.40 m/s). Principal component analysis explained 70% of the variances composed by liver stiffness increase, erythrocytes and alanine aminotransferase reduction. Brachycephalic dogs had higher spleen and liver stiffness and a subacute inflammatory state, which represent another BOAS systemic effect. Consequently, these dogs can be at higher risk of hepatic disorders compared with mesocephalic dogs, similarly to humans affected by sleep apnea syndrome.
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Affiliation(s)
- Andréia Coutinho Facin
- Department of Clinic and Veterinary Surgery, São Paulo State University (UNESP), School of Agricultural and Veterinarian Sciences, Jaboticabal, São Paulo, 14884-900, Brazil.
| | - Ricardo Andres Ramirez Uscategui
- Institute of Agrarian Sciences, Federal University of the Jequitinhonha and Mucuri Valleys (UFVJM), Unaí, Minas Gerais, 38610-000, Brazil
| | - Marjury Cristina Maronezi
- Department of Clinic and Veterinary Surgery, São Paulo State University (UNESP), School of Agricultural and Veterinarian Sciences, Jaboticabal, São Paulo, 14884-900, Brazil
| | - Letícia Pavan
- Department of Clinic and Veterinary Surgery, São Paulo State University (UNESP), School of Agricultural and Veterinarian Sciences, Jaboticabal, São Paulo, 14884-900, Brazil
| | - Mareliza Possa Menezes
- Department of Clinic and Veterinary Surgery, São Paulo State University (UNESP), School of Agricultural and Veterinarian Sciences, Jaboticabal, São Paulo, 14884-900, Brazil
| | - Gabriel Luiz Montanhim
- Department of Clinic and Veterinary Surgery, São Paulo State University (UNESP), School of Agricultural and Veterinarian Sciences, Jaboticabal, São Paulo, 14884-900, Brazil
| | - Aparecido Antonio Camacho
- Department of Clinic and Veterinary Surgery, São Paulo State University (UNESP), School of Agricultural and Veterinarian Sciences, Jaboticabal, São Paulo, 14884-900, Brazil
| | | | - Paola Castro Moraes
- Department of Clinic and Veterinary Surgery, São Paulo State University (UNESP), School of Agricultural and Veterinarian Sciences, Jaboticabal, São Paulo, 14884-900, Brazil
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7
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Johnson LR, Stern JA. Clinical features and outcome in 25 dogs with respiratory-associated pulmonary hypertension treated with sildenafil. J Vet Intern Med 2019; 34:65-73. [PMID: 31816127 PMCID: PMC6979098 DOI: 10.1111/jvim.15679] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2019] [Accepted: 11/25/2019] [Indexed: 12/16/2022] Open
Abstract
Background Pulmonary hypertension (PH) can develop secondary to many common cardiopulmonary diseases, and the use of sildenafil has improved care of affected dogs. Objective To evaluate response to sildenafil in dogs with respiratory‐associated PH. Animals Twenty‐five dogs with PH. Methods Prospective clinical trial. Doppler echocardiography identified dogs with moderate to severe PH, and additional tests were performed to detect underlying diseases. A 17‐point quality of life (QOL) questionnaire was completed, and sildenafil was prescribed, along with other medications deemed necessary for the management of clinically diagnosed respiratory diseases. After 30 days, dogs returned to the hospital for repeat echocardiogram and QOL survey. Results The median age was 12.4 years, and most dogs were small breed dogs (median weight, 6.5 kg). Syncope (64%), cough (56%), and respiratory difficulty (32%) were the most common presenting complaints. Respiratory diseases associated with PH included tracheobronchomalacia, pulmonary fibrosis, inflammatory airway disease, and brachycephalic syndrome, with multiple diseases in some dogs. Eight of 25 dogs (32%) died or were euthanized within 1 month. In the remaining dogs, tricuspid regurgitation pressure gradient (83.0 ± 17.4 mm Hg before, 55.4 ± 17.4 mm Hg after) and QOL scores were significantly improved after 1 month of sildenafil. Fifty percent mortality was reached 6 months after study entry, with 4 dogs alive 5 years after diagnosis. Conclusions and Clinical Importance Sildenafil responsiveness is variable in dogs with respiratory‐associated PH, but improved QOL was demonstrated in dogs surviving >1 month, and long‐term survival was noted in some cases.
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Affiliation(s)
- Lynelle R Johnson
- Department of Medicine and Epidemiology, University of California, Davis, Davis, California
| | - Joshua A Stern
- Department of Medicine and Epidemiology, University of California, Davis, Davis, California
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8
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Gianella P, Caccamo R, Bellino C, Bottero E, Fietta F, Roncone S, Ostanello F, Pietra M, Buracco P. Evaluation of metabolic profile and C-reactive protein concentrations in brachycephalic dogs with upper airway obstructive syndrome. J Vet Intern Med 2019; 33:2183-2192. [PMID: 31454107 PMCID: PMC6766536 DOI: 10.1111/jvim.15575] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Accepted: 07/11/2019] [Indexed: 02/06/2023] Open
Abstract
Background Brachycephalic dogs have abnormal breathing patterns similar to those in humans with obstructive sleep apnea syndrome. Obstructive sleep apnea syndrome is associated with dyslipidemia, hyperglycemia, and insulin resistance. Despite the fact that anatomic and functional alterations are well described in brachycephalic dogs, little is known about the consequences of upper airway obstruction on systemic inflammatory response and metabolic profile. Objectives To describe history, clinical presentation, and anatomic abnormalities; to evaluate systemic inflammatory response and metabolic profile; and to identify possible associations among clinical signs, anatomic abnormalities, inflammatory response, and metabolic profile in brachycephalic dogs with airway obstruction. Animals Thirty purebred brachycephalic dogs with brachycephalic airway obstructive syndrome (BAOS). Methods Prospective study. The following information was recorded and studied: respiratory and digestive signs, airway and digestive endoscopic anomalies, presence or absence of tracheal hypoplasia, histologic evaluation of gastrointestinal tract biopsy specimens, serum concentrations of C‐reactive protein (CRP), fructosamine, insulin, glucose, triglyceride, cholesterol, and plasma concentrations of lipoprotein classes. Results A high proportion of dogs (76.7%) had gastrointestinal signs. Esophageal deviation, atony of the cardia of the stomach, and distal esophagitis were the most common endoscopic anomalies detected. Twenty‐six (86.6%) dogs had different degrees of laryngeal collapse. Gastrointestinal histologic evaluation identified mostly chronic inflammation. Glucose, fructosamine, triglycerides, cholesterol, CRP, pre‐beta, beta lipoproteins, and chylomicrons were increased to a variable extent. Significant associations among clinical signs, anatomic abnormalities, CRP, and metabolic profile were not found. Conclusion and Clinical Importance Despite the presence of inflammation and some mild metabolic derangements, the clinicopathological variables evaluated did not offer valuable information in dogs with BAOS.
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Affiliation(s)
- Paola Gianella
- Department of Veterinary Sciences, University of Turin, Torino, Italy
| | - Roberta Caccamo
- Department of Veterinary Sciences, University of Turin, Torino, Italy
| | - Claudio Bellino
- Department of Veterinary Sciences, University of Turin, Torino, Italy
| | | | - Federica Fietta
- Department of Veterinary Sciences, University of Turin, Torino, Italy
| | - Silvia Roncone
- Department of Veterinary Sciences, University of Turin, Torino, Italy
| | - Fabio Ostanello
- Department of Veterinary Medical Sciences, University of Bologna, Bologna, Italy
| | - Marco Pietra
- Department of Veterinary Medical Sciences, University of Bologna, Bologna, Italy
| | - Paolo Buracco
- Department of Veterinary Sciences, University of Turin, Torino, Italy
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9
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Balakrishnan A, Drobatz KJ, Silverstein DC. Retrospective evaluation of the prevalence, risk factors, management, outcome, and necropsy findings of acute lung injury and acute respiratory distress syndrome in dogs and cats: 29 cases (2011-2013). J Vet Emerg Crit Care (San Antonio) 2017; 27:662-673. [PMID: 28873275 DOI: 10.1111/vec.12648] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Revised: 11/25/2015] [Accepted: 12/11/2015] [Indexed: 02/05/2023]
Abstract
OBJECTIVE To determine the prevalence and risk factors for veterinary acute lung injury (VetALI) and veterinary acute respiratory distress syndrome (VetARDS), assess mechanical ventilation settings and patient outcomes, and to evaluate the relationship of clinical diagnoses with necropsy findings. DESIGN Retrospective study. SETTING University teaching hospital. ANIMALS Twenty-four dogs and 5 cats with a clinical diagnosis of VetALI or VetARDS. Control population includes 24 dogs and 5 cats with a clinical diagnosis of respiratory disease other than VetALI or VetARDS. INTERVENTIONS None. MEASUREMENTS AND MAIN RESULTS VetALI and VetARDS were diagnosed in 3.2% of dogs and 1.3% of cats presenting to the ICU. Systemic inflammatory response syndrome was the most common inciting condition (16/24 dogs, 2/5 cats), followed by vomiting and subsequent aspiration of gastric contents (9/24 dogs), sepsis (5/24 dogs, 3/5 cats), multiple transfusions (4/24 dogs), trauma (3/24 dogs), and adverse drug reactions (1/24 dogs, 1/5 cats). None of these conditions were found to be significantly associated with a risk of development of VetALI or VetARDS when compared to controls. Twelve dogs (50%) and 4 cats (80%) underwent mechanical ventilation for a median duration of 18 hours in dogs (range: 6-174 h) and 15.5 hours in cats (range: 6-91 h). Overall, 3/29 patients survived to discharge including 2/24 dogs and 1/5 cats. Necropsy results were available for 8/22 dogs and 3/4 cats. A total of 6/8 dogs (75%) dogs and 3/3 (100%) cats met the histopathologic criteria for diagnosis of VetALI or VetARDS. CONCLUSIONS VetALI and VetARDS can cause life-threatening respiratory distress in dogs and cats necessitating mechanical ventilation in 50% of dogs and 80% of cats in this study. These diseases are associated with a poor clinical outcome and a high rate of humane euthanasia.
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Affiliation(s)
- Anusha Balakrishnan
- Section of Emergency and Critical Care, Department of Clinical Studies, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA 19104
| | - Kenneth J Drobatz
- Section of Emergency and Critical Care, Department of Clinical Studies, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA 19104
| | - Deborah C Silverstein
- Section of Emergency and Critical Care, Department of Clinical Studies, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA 19104
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10
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Richter KR, Nasr AN, Mexas AM. Cytokine Concentrations Measured by Multiplex Assays in Canine Peripheral Blood Samples. Vet Pathol 2017; 55:53-67. [PMID: 28812527 DOI: 10.1177/0300985817725388] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Cytokines are known to play important roles in a wide range of pathologic conditions spanning all organ systems in every species studied. As our knowledge of the physiology of individual cytokines expands and our ability to measure multiple cytokines in smaller biological samples increases, we gain more insight into the significance and function of each cytokine and the importance of cytokine networks. Previous studies that reported measurements of cytokine concentrations from serum or plasma in dogs with infectious, autoimmune, metabolic, endocrine, and neoplastic diseases yield an appreciation for the complexity of cytokine control and potential applications for cytokine measurements in the diagnosis, prognosis, and therapy of a variety of disease conditions. In this review, we highlight the benefits of multiplex cytokine analysis, summarize clinical and experimental reports that have used this technology in dogs, and discuss the strengths and limitations of data analysis for the interpretation of results in these studies. We describe how differences in technical acuity, data reporting tactics, statistical analysis, study population selection criteria, and cross-sectional experimental design methods may affect interpretation of results from this technology. We also suggest methods for analysis in future studies, such as reporting median fluorescence intensity values, analyzing the proportion of patients above population medians, and performing longitudinal studies.
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Affiliation(s)
- Kristen R Richter
- 1 College of Veterinary Medicine, Midwestern University, Glendale, AZ, USA
| | - Amirah N Nasr
- 1 College of Veterinary Medicine, Midwestern University, Glendale, AZ, USA
| | - Angela M Mexas
- 1 College of Veterinary Medicine, Midwestern University, Glendale, AZ, USA
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11
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Crane C, Rozanski EA, Abelson AL, deLaforcade A. Severe brachycephalic obstructive airway syndrome is associated with hypercoagulability in dogs. J Vet Diagn Invest 2017; 29:570-573. [PMID: 28381131 DOI: 10.1177/1040638717703434] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
We evaluated whether dogs with severe brachycephalic obstructive airway syndrome (BOAS) developed a hypercoagulable state similar to people with obstructive sleep apnea. Five dogs with grade 3 BOAS were included as well as 5 healthy control Labrador Retrievers. Venous blood samples were collected from each dog for performance of thromboelastography and determination of hematocrit and platelet count. Groups were compared using a t-test, with p < 0.05 considered significant. Thromboelastography results identified that all BOAS dogs were hypercoagulable compared to the Labradors, having significantly shortened clotting time with increased angle, maximal amplitude, and clot rigidity. BOAS dogs also had evidence of delayed fibrinolysis. These results are consistent with, but more severe than, those previously documented in apparently healthy Bulldogs. Together, these findings support the presence of a hypercoagulable state in brachycephalic dogs, and suggest that this state is amplified by increasing severity of BOAS.
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Affiliation(s)
- Courtney Crane
- Department of Clinical Sciences, Cummings School of Veterinary Medicine at Tufts University, North Grafton, MA
| | - Elizabeth A Rozanski
- Department of Clinical Sciences, Cummings School of Veterinary Medicine at Tufts University, North Grafton, MA
| | - Amanda L Abelson
- Department of Clinical Sciences, Cummings School of Veterinary Medicine at Tufts University, North Grafton, MA
| | - Armelle deLaforcade
- Department of Clinical Sciences, Cummings School of Veterinary Medicine at Tufts University, North Grafton, MA
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Cook DA, Moses PA, Mackie JT. Clinical effects of the use of a bipolar vessel sealing device for soft palate resection and tonsillectomy in dogs, with histological assessment of resected tonsillar tissue. Aust Vet J 2015; 93:445-51. [DOI: 10.1111/avj.12384] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2013] [Revised: 02/17/2014] [Accepted: 02/26/2014] [Indexed: 11/27/2022]
Affiliation(s)
- DA Cook
- Veterinary Specialist Services; Shop 14, Hometown, Cnr Logan and Lexington Roads Underwood Queensland 4119 Australia
| | - PA Moses
- Veterinary Specialist Services; Shop 14, Hometown, Cnr Logan and Lexington Roads Underwood Queensland 4119 Australia
| | - JT Mackie
- Vepalabs; Woolloongabba QLD Australia
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Hoareau G, Mellema M. Pro-coagulant thromboelastographic features in the bulldog. J Small Anim Pract 2014; 56:103-7. [DOI: 10.1111/jsap.12299] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2013] [Revised: 05/09/2014] [Accepted: 09/25/2014] [Indexed: 11/27/2022]
Affiliation(s)
- G. Hoareau
- Department of Surgical and Radiological Sciences, School of Veterinary Medicine; University of California Davis; Davis CA 95616-8747 USA
| | - M. Mellema
- Department of Surgical and Radiological Sciences, School of Veterinary Medicine; University of California Davis; Davis CA 95616-8747 USA
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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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Pratschke K. Current thinking about brachycephalic syndrome: more than just airways. ACTA ACUST UNITED AC 2014. [DOI: 10.12968/coan.2014.19.2.70] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Johnson LR, Mayhew PD, Steffey MA, Hunt GB, Carr AH, McKiernan BC. Upper airway obstruction in Norwich Terriers: 16 cases. J Vet Intern Med 2013; 27:1409-15. [PMID: 24112556 DOI: 10.1111/jvim.12206] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2013] [Revised: 08/04/2013] [Accepted: 08/21/2013] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND Norwich Terriers have grown increasingly popular as show animals and pets, and awareness of respiratory problems within the breed is growing. OBJECTIVE To describe components of obstructive upper airway syndrome in a nonbrachycephalic terrier breed. ANIMALS Sixteen Norwich Terriers; 12 with and 4 without clinical signs of respiratory disease. METHODS Prospective case series. Physical and laryngoscopic examinations were performed by 1 investigator in all dogs. Medical and surgical interventions were summarized and results of follow-up examination or owner reports were recorded. RESULTS The study population was comprised of 9 females (6 intact) and 7 males (5 intact). Median age was 3.0 years (range, 0.5-11 years). Of 12 dogs presented for a respiratory complaint, physical examination was normal in 4 dogs. Laryngoscopic examination was abnormal in 11/12 dogs with redundant supra-arytenoid folds, laryngeal collapse, everted laryngeal saccules, and a narrowed laryngeal opening in most. Of 4 dogs lacking clinical signs, all had normal physical examination; however, 3/4 dogs had similar appearance of the larynx to dogs with clinical signs. Response to surgical intervention was minimal to moderate in all dogs. CONCLUSIONS AND CLINICAL IMPORTANCE Norwich Terriers suffer from an upper airway obstructive syndrome that differs from that encountered in brachycephalic breeds. Affected dogs are difficult to identify without laryngoscopic examination because of the lack of clinical signs and abnormalities in physical examination findings, despite severe airway obstruction. Care is warranted when anesthetizing Norwich Terriers because of the small size of the laryngeal opening.
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Affiliation(s)
- L R Johnson
- Department of Medicine and Epidemiology, University of California, Davis, Davis, CA
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