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Logothetou V, L'Eplattenier H, Shimizu N. Complications and influence of cutaneous closure technique on subdermal plexus flaps in 97 dogs (2006-2022). Vet Surg 2024; 53:546-555. [PMID: 38037259 DOI: 10.1111/vsu.14051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 10/17/2023] [Accepted: 11/09/2023] [Indexed: 12/02/2023]
Abstract
OBJECTIVE To determine the incidence and severity of complications for subdermal plexus flaps in dogs and compare the complications when using sutures or staples for cutaneous closure of subdermal plexus flaps. STUDY DESIGN Retrospective monocentric study. SAMPLE POPULATION Ninety-seven client-owned dogs. METHODS Dogs that underwent wound reconstruction using subdermal plexus flaps were retrospectively identified. Type of flap, cutaneous closure technique, complications and level of complication associated with their use were recorded. Follow-up was considered adequate if it was more than 10 days postoperatively or until a complication occurred. RESULTS Complications were seen in 52 dogs (53.6%), of which 13/18 (72.2%) of dogs had cutaneous closure with skin staples versus 39/79 (49.3%) with skin sutures. The location of the mass/wound on the head and use of an advancement flap was associated with lower incidence of complications (p < .001; p = .018 respectively). Location of the mass/wound on the proximal pelvic limb was associated with a low level of complications (p = .01) on univariable analysis only. On multivariable analysis, only an increased bodyweight was associated with an increased incidence of complications (p = .029). CONCLUSIONS Increased weight may be associated with an increased risk of complications with subdermal plexus flaps. No risk factor was found to be associated with the severity of complications. CLINICAL SIGNIFICANCE Overall incidence of complications for subdermal plexus flaps in dogs in this study was 53.6%. The number of dogs included in the study was not sufficient to assess if the skin closure technique affects the incidence of complications.
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Balouei F, Stefanon B, Martello E, Atuahene D, Sandri M, Meineri G. Supplementation with Silybum marianum Extract, Synbiotics, Omega-3 Fatty Acids, Vitamins, and Minerals: Impact on Biochemical Markers and Fecal Microbiome in Overweight Dogs. Animals (Basel) 2024; 14:579. [PMID: 38396547 PMCID: PMC10886211 DOI: 10.3390/ani14040579] [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: 11/28/2023] [Revised: 01/24/2024] [Accepted: 02/06/2024] [Indexed: 02/25/2024] Open
Abstract
Overweight and obese dogs can develop metabolic dysfunction, characterized by an inflammatory response and involvement of liver functions. If a modulation of the gut microbiome and its interaction with the gut-liver axis is implicated in the development of metabolic dysfunction, exploration becomes necessary. Over the past decade, diverse therapeutic approaches have emerged to target pathogenic factors involved in metabolic dysfunction. This study investigated the impact of a supplement with hepatoprotective activity, containing extracts of Silybum marianum, prebiotics, probiotics, n-3 polyunsaturated fatty acids, vitamins, and minerals on hematological markers of liver functions and inflammation, as well as on the intestinal microbiota of 10 overweight adult dogs over a 35-day time span. Animals underwent clinical and laboratory evaluations every 7 days, both before the administration of the supplement (T0) and after 7, 14, 21, 28, and 35 days (T1, T2, T3, T4, and T5). In comparison to T0, a significant (p < 0.05) decrease in ALP, glucose, direct bilirubin, and CRP was observed from T3 to T5. The alpha diversity of the fecal microbiota significantly decreased (p < 0.05) only at T1, with high variability observed between dogs. Total short-chain fatty acid and lactic acid were also lower at T1 (p < 0.05) compared to the other times of sampling. The beta diversity of the fecal microbiota failed to show a clear pattern in relation to the sampling times. These results of blood parameters in overweight dogs show a reduction of the inflammation and an improvement of metabolic status during the study period, but the effective contribution of the supplement in this clinical outcome deserves further investigation. Furthermore, the considerable individual variability observed in the microbiome hinders the confident detection of supplement effects.
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Affiliation(s)
- Fatemeh Balouei
- Department of Agrifood, Environmental and Animal Science, University of Udine, Via delle Scienze 206, 33100 Udine, Italy; (F.B.); (M.S.)
| | - Bruno Stefanon
- Department of Agrifood, Environmental and Animal Science, University of Udine, Via delle Scienze 206, 33100 Udine, Italy; (F.B.); (M.S.)
| | - Elisa Martello
- Division of Epidemiology and Public Health, School of Medicine, University of Nottingham, Nottingham City Hospital Campus, Nottingham NG5 1PB, UK;
| | - David Atuahene
- Department of Veterinary Sciences, School of Agriculture and Veterinary Medicine, University of Turin, Grugliasco, 10095 Turin, Italy; (D.A.); (G.M.)
| | - Misa Sandri
- Department of Agrifood, Environmental and Animal Science, University of Udine, Via delle Scienze 206, 33100 Udine, Italy; (F.B.); (M.S.)
| | - Giorgia Meineri
- Department of Veterinary Sciences, School of Agriculture and Veterinary Medicine, University of Turin, Grugliasco, 10095 Turin, Italy; (D.A.); (G.M.)
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3
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Monteiro BP, Lascelles BDX, Murrell J, Robertson S, Steagall PVM, Wright B. 2022
WSAVA
guidelines for the recognition, assessment and treatment of pain. J Small Anim Pract 2022. [DOI: 10.1111/jsap.13566] [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]
Affiliation(s)
- B. P. Monteiro
- Department of Clinical Sciences, Faculty of Veterinary Medicine Université de Montréal 3200 rue Sicotte, Saint‐Hyacinthe Quebec Canada
| | - B. D. X. Lascelles
- Comparative Pain Research Laboratory and Surgery Section North Carolina State University 4700 Hillsborough Street Raleigh NC USA
| | - J. Murrell
- Highcroft Veterinary Referrals 615 Wells Rd, Whitchurch Bristol BS149BE UK
| | - S. Robertson
- Senior Medical Director Lap of Love Veterinary Hospice 17804 N US Highway 41 Lutz FL 33549 USA
| | - P. V. M. Steagall
- Department of Clinical Sciences, Faculty of Veterinary Medicine Université de Montréal 3200 rue Sicotte, Saint‐Hyacinthe Quebec Canada
| | - B. Wright
- Mistral Vet 4450 Thompson Pkwy Fort Collins CO 80534 USA
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Activated Partial Thromboplastin Time and Mortality in Coronary Artery Bypass Grafting Patients. DISEASE MARKERS 2022; 2022:2918654. [PMID: 36168325 PMCID: PMC9509521 DOI: 10.1155/2022/2918654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 08/11/2022] [Accepted: 08/25/2022] [Indexed: 11/17/2022]
Abstract
Background. To evaluate the prognostic value of preoperative activated partial thromboplastin time (APTT) in patients who underwent coronary artery bypass grafting (CABG). Methods. All data were extracted from the Medical Information Mart for Intensive Care III (MIMIC-III) database. The study population was divided to two groups according to the optimal cut-off value of APTT calculated by X-tile software, and Cox proportional hazard model was used to define independent effect of APTT on 4-year mortality. Survival curves were estimated by the Kaplan-Meier method, and the area under the receiver-operating characteristic curve (AUC) was calculated to compare APTT with other severity scores. Propensity score matching (PSM) analysis were applied to ensure the robustness of this study. Results. A total of 2,706 patients were included. The optimal cut-off value of APTT for 4-year mortality was 44 seconds. The Cox proportional hazard model showed that patients with
had a significantly higher risk of all-cause death than those with
both before (HR (95% CI), 1.42 (1.16-1.74),
) and after PSM (HR (95% CI), 1.47 (1.14-1.89),
). The survival curves showed that patients with longer APTT had a significantly lower 1-year and 4-year cumulative survival probability. The ROC of APTT combined with other severity scores significantly increased predictive ability for 1-year and 4-year mortality. Conclusions. A longer APTT (≥44) was associated with a higher risk of mortality and can serve as a prognostic predictor in CABG patients.
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Atkinson BK, Goddard A, Engelbrecht M, Pretorius S, Pazzi P. Circulating markers of endothelial activation in canine parvoviral enteritis. J S Afr Vet Assoc 2022. [DOI: 10.36303/jsava.2022.93.1.496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023] Open
Affiliation(s)
- BK Atkinson
- Department of Companion Animal Clinical Studies, Faculty of Veterinary Science, University of Pretoria,
South Africa
| | - A Goddard
- Department of Companion Animal Clinical Studies, Faculty of Veterinary Science, University of Pretoria,
South Africa
| | - M Engelbrecht
- Department of Companion Animal Clinical Studies, Faculty of Veterinary Science, University of Pretoria,
South Africa
| | - S Pretorius
- Department of Companion Animal Clinical Studies, Faculty of Veterinary Science, University of Pretoria,
South Africa
| | - P Pazzi
- Department of Companion Animal Clinical Studies, Faculty of Veterinary Science, University of Pretoria,
South Africa
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Lyu Y, Liu D, Nguyen P, Peters I, Heilmann RM, Fievez V, Hemeryck LY, Hesta M. Differences in Metabolic Profiles of Healthy Dogs Fed a High-Fat vs. a High-Starch Diet. Front Vet Sci 2022; 9:801863. [PMID: 35252418 PMCID: PMC8891928 DOI: 10.3389/fvets.2022.801863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Accepted: 01/24/2022] [Indexed: 11/17/2022] Open
Abstract
Obesity is a common problem in dogs and overconsumption of energy-rich foods is a key factor. This study compared the inflammatory response and fecal metabolome of dogs fed a high-fat vs. a high-starch diet. Ten healthy lean adult beagles were equally allocated into two groups in a cross-over design. Each group received two diets in which fat (horse fat) and starch (pregelatinized corn starch) were exchanged in an isocaloric way to compare high fat vs. high starch. There was a tendency to increase the glucose and glycine concentrations and the glucose/insulin ratio in the blood in dogs fed with the high-fat diet, whereas there was a decrease in the level of Non-esterified fatty acids and a tendency to decrease the alanine level in dogs fed with the high-starch diet. Untargeted analysis of the fecal metabolome revealed 10 annotated metabolites of interest, including L-methionine, which showed a higher abundance in dogs fed the high-starch diet. Five other metabolites were upregulated in dogs fed the high-fat diet, but could not be annotated. The obtained results indicate that a high-starch diet, compared to a high-fat diet, may promote lipid metabolism, anti-oxidative effects, protein biosynthesis and catabolism, mucosal barrier function, and immunomodulation in healthy lean dogs.
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Affiliation(s)
- Yang Lyu
- ECAN Equine and Companion Animal Nutrition, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - Daisy Liu
- ECAN Equine and Companion Animal Nutrition, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - Patrick Nguyen
- Nutrition, Physiopathology and Pharmacology Unit, National College of Veterinary Medicine, Food Science and Engineering, Nantes, France
| | - Iain Peters
- SYNLAB VPG, Exeter Science Park, Exeter, United Kingdom
| | - Romy M. Heilmann
- Gastrointestinal Laboratory, Department of Small Animal Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, United States
| | - Veerle Fievez
- Department of Animal Sciences and Aquatic Ecology, Faculty of Bioscience Engineering, Ghent, Belgium
| | - Lieselot Y. Hemeryck
- Laboratory of Chemical Analysis, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
- *Correspondence: Myriam Hesta
| | - Myriam Hesta
- ECAN Equine and Companion Animal Nutrition, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
- Lieselot Y. Hemeryck
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Vieira AB, Restrepo MA, Auzenne D, Molina K, O'Sullivan M, Machado MV, Cavanaugh SM. Mild to moderate overweight in dogs: is there an impact on routine hematological and biochemical profiles, echocardiographic parameters and cardiac autonomic modulation? Vet Res Commun 2022; 46:527-535. [PMID: 35018593 DOI: 10.1007/s11259-021-09880-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Accepted: 12/27/2021] [Indexed: 11/25/2022]
Abstract
Obesity is considered the most common nutritional disease of dogs. Even though overt obesity is more likely to impair health, even moderately overweight dogs are at greater risk for requiring medication for chronic health problems earlier in life. Although the number of overweight dogs far exceeds the number of obese ones, most of the studies published so far focused on derangements in a mixed overweight/obese population (Body condition score - BCS ≥7/9) rather than in separated groups. This study aimed to evaluate the impact of mild to moderate obesity on routine hematological and biochemical profile and cardiovascular parameters in dogs. Nine healthy lean (BCS =4-5/9) and 24 overweight dogs (BCS = 6-7/9) were enrolled. Complete blood count, serum biochemistry analyses, echocardiographic parameters, and cardiac autonomic function by heart rate variability (HRV) were determined. In our study population, although total protein, globulin and phosphorus concentrations were increased in overweight compared to lean dogs, all complete blood count and biochemical parameters were within reference ranges for both groups. Parameters usually increased in obese dogs, like triglycerides and cholesterol concentrations, were within reference ranges in our overweight population. There were no significant changes in echocardiographic parameters, but HRV had a significant decrease in high frequency (HF) power (P = 0.02), suggesting a depression in parasympathetic activity. Our findings show that mild to moderate overweight dogs do not show the hematological and echocardiographic alterations already reported for mixed overweight/obese populations but might have impaired cardiac autonomic modulation. Although not enough to make conclusions, our data raise the question of whether research studies should place overweight and obese dogs in the same category.
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Affiliation(s)
- Aline Bomfim Vieira
- Biomedical Department, Ross University School of Veterinary Medicine (RUSVM), West Farm, PO Box 334, Basseterre, West Indies, Saint Kitts and Nevis.
| | - Mariana Alvarez Restrepo
- Biomedical Department, Ross University School of Veterinary Medicine (RUSVM), West Farm, PO Box 334, Basseterre, West Indies, Saint Kitts and Nevis
| | - Danielle Auzenne
- Biomedical Department, Ross University School of Veterinary Medicine (RUSVM), West Farm, PO Box 334, Basseterre, West Indies, Saint Kitts and Nevis
| | - Kevin Molina
- Biomedical Department, Ross University School of Veterinary Medicine (RUSVM), West Farm, PO Box 334, Basseterre, West Indies, Saint Kitts and Nevis
| | - Meghan O'Sullivan
- Biomedical Department, Ross University School of Veterinary Medicine (RUSVM), West Farm, PO Box 334, Basseterre, West Indies, Saint Kitts and Nevis
| | - Marcus Vinicius Machado
- Biomedical Department, Ross University School of Veterinary Medicine (RUSVM), West Farm, PO Box 334, Basseterre, West Indies, Saint Kitts and Nevis
| | - Sarah Marie Cavanaugh
- Biomedical Department, Ross University School of Veterinary Medicine (RUSVM), West Farm, PO Box 334, Basseterre, West Indies, Saint Kitts and Nevis
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8
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Phungviwatnikul T, Lee AH, Belchik SE, Suchodolski JS, Swanson KS. Weight loss and high-protein, high-fiber diet consumption impact blood metabolite profiles, body composition, voluntary physical activity, fecal microbiota, and fecal metabolites of adult dogs. J Anim Sci 2021; 100:6490144. [PMID: 34967874 PMCID: PMC8846339 DOI: 10.1093/jas/skab379] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2021] [Accepted: 12/29/2021] [Indexed: 01/01/2023] Open
Abstract
Canine obesity is associated with reduced lifespan and metabolic dysfunction, but can be managed by dietary intervention. This study aimed to determine the effects of restricted feeding of a high-protein, high-fiber (HPHF) diet and weight loss on body composition, physical activity, blood metabolites, and fecal microbiota and metabolites of overweight dogs. Twelve spayed female dogs (age: 5.5 ± 1.1 yr; body weight [BW]: 14.8 ± 2.0 kg, body condition score [BCS]: 7.9 ± 0.8) were fed a HPHF diet during a 4-wk baseline phase to maintain BW. After baseline (week 0), dogs were first fed 80% of baseline intake and then adjusted to target 1.5% weekly weight loss for 24 wk. Body composition using dual-energy x-ray absorptiometry and blood samples (weeks 0, 6, 12, 18, and 24), voluntary physical activity (weeks 0, 7, 15, and 23), and fresh fecal samples for microbiota and metabolite analysis (weeks 0, 4, 8, 12, 16, 20, and 24) were measured over time. Microbiota data were analyzed using QIIME 2. All data were analyzed statistically over time using SAS 9.4. After 24 wk, dogs lost 31.2% of initial BW and had 1.43 ± 0.73% weight loss per week. BCS decreased (P < 0.0001) by 2.7 units, fat mass decreased (P < 0.0001) by 3.1 kg, and fat percentage decreased (P < 0.0001) by 11.7% with weight loss. Many serum metabolites and hormones were altered, with triglycerides, leptin, insulin, C-reactive protein, and interleukin-6 decreasing (P < 0.05) with weight loss. Relative abundances of fecal Bifidobacterium, Coriobacteriaceae UCG-002, undefined Muribaculaceae, Allobaculum, Eubacterium, Lachnospira, Negativivibacillus, Ruminococcus gauvreauii group, uncultured Erysipelotrichaceae, and Parasutterella increased (P < 0.05), whereas Prevotellaceae Ga6A1 group, Catenibacterium, Erysipelatoclostridium, Fusobacterium, Holdemanella, Lachnoclostridium, Lactobacillus, Megamonas, Peptoclostridium, Ruminococcus gnavus group, and Streptococcus decreased (P < 0.01) with weight loss. Despite the number of significant changes, a state of dysbiosis was not observed in overweight dogs. Fecal ammonia and secondary bile acids decreased, whereas fecal valerate increased with weight loss. Several correlations between gut microbial taxa and biological parameters were observed. Our results suggest that restricted feeding of a HPHF diet and weight loss promotes fat mass loss, minimizes lean mass loss, reduces inflammatory marker and triglyceride concentrations, and modulates fecal microbiota phylogeny and activity in overweight dogs.
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Affiliation(s)
| | - Anne H Lee
- Department of Animal Sciences, University of Illinois at Urbana – Champaign, Urbana, IL 61801, USA
| | - Sara E Belchik
- Department of Animal Sciences, University of Illinois at Urbana – Champaign, Urbana, IL 61801, USA
| | - Jan S Suchodolski
- Gastrointestinal Laboratory, Department of Small Animal Clinical Sciences, Texas A&M University, College Station, TX 77843, USA
| | - Kelly S Swanson
- Department of Animal Sciences, University of Illinois at Urbana – Champaign, Urbana, IL 61801, USA,Department of Veterinary Clinical Medicine, University of Illinois at Urbana – Champaign, Urbana, IL 61801, USA,Division of Nutritional Sciences, University of Illinois at Urbana – Champaign, Urbana, IL 61801, USA,Corresponding author:
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9
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Yamazaki J, Meagawa S, Jelinek J, Yokoyama S, Nagata N, Yuki M, Takiguchi M. Obese status is associated with accelerated DNA methylation change in peripheral blood of senior dogs. Res Vet Sci 2021; 139:193-199. [PMID: 34358922 DOI: 10.1016/j.rvsc.2021.07.024] [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: 04/08/2021] [Revised: 06/29/2021] [Accepted: 07/22/2021] [Indexed: 12/15/2022]
Abstract
Obesity and its associated comorbidities constitute a major and growing health problem worldwide not only involved with people but also dogs and cats. Although few genetic mutations have been associated with obesity in dogs, molecular mechanism remains to be clearly understood. Given the fact that DNA methylation leads to gene expression variability and has plasticity affected by metabolic phenotypes such as obesity in human, the objective of this study is to identify obesity-associated differentially methylated cytosine-phosphate-guanine (CpG) dinucleotide sites in dogs. With genome-wide DNA methylation analysis using next-generation sequencing for blood samples from fourteen Miniature dachshunds with body condition score (BCS) 4-5 and BCS ≥6, over 100,000 sites could be analysed to identify genomic locations of differentially methylated CpG sites. As a result, 191 differentially methylated CpG sites (89 CpG sites were hypermethylated in BCS ≥6 and 102 were hypermethylated in BCS 4-5) were identified. These sites included promoter regions of Kisspeptin receptor (KISS1R) and Calcyphosine 2 (CAPS2) genes which were subsequently validated by bisulfite-pyrosequencing for another set of 157 dog blood samples. KISS1R methylation levels were found to be higher in BCS ≥6 group than BCS 4-5 in senior (>84 months) dogs. Especially male dogs but not female dogs as well as uncastrated male dogs but not castrated male dogs showed this trend. DNA methylation of KISS1R gene will be useful for understanding of comprehensive epigenetic change in obese dogs.
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Affiliation(s)
- Jumpei Yamazaki
- Translational Research Unit, Veterinary Teaching Hospital, Graduate School of Veterinary Medicine, Hokkaido University, Japan; One Health Research Center, Hokkaido University, Japan.
| | - Shinji Meagawa
- Department of Pediatrics, MD Anderson Cancer Center, Houston, Tx, USA
| | | | - Shoko Yokoyama
- Translational Research Unit, Veterinary Teaching Hospital, Graduate School of Veterinary Medicine, Hokkaido University, Japan
| | - Noriyuki Nagata
- Veterinary Teaching Hospital, Graduate School of Veterinary Medicine, Hokkaido University, Japan
| | - Masashi Yuki
- Yuki Animal Hospital, 2-99 Kiba-cho, Minato-ku, Aichi, Japan
| | - Mitsuyoshi Takiguchi
- Veterinary Teaching Hospital, Graduate School of Veterinary Medicine, Hokkaido University, Japan
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Erdal M, Altunkaynak BZ, Kocaman A, Alkan I, Öztas E. The role of HMGB1 in liver inflammation in obese rats. Biotech Histochem 2019; 94:449-458. [PMID: 30916587 DOI: 10.1080/10520295.2019.1589573] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Obesity is a chronic disease that is characterized by increased body fat owing to imbalance between consumed and expended energy. Inflammation generally is accompanied by accumulation of excess lipid in adipose tissue and liver. High mobility group box-1 (HMGB1) participates in the pathogenesis of inflammatory diseases. We investigated the relation of the number of HMGB1 positive cells to body mass index (BMI), liver inflammation and the number of Kupffer cells. We divided 18 female Wistar albino rats into two groups: group 1, untreated control fed normal commercial rat diet and group 2, obese rats fed a special diet containing 40% fat. The plasma concentrations of cholesterol, glucose, superoxide dismutase enzyme (SOD) and catalase activities were measured for all animals. The numbers of hepatocytes, Kupffer cells and HMGB1 positive cells were counted using stereological methods. The mean numbers of Kupffer cells and HMGB1 positive cells were higher for group 2 than for group 1. The concentrations of plasma cholesterol and glucose levels also were higher in group 2. Plasma levels of SOD and catalase were significantly lower in group 2 compared to group 1. The number of HMGB1 cells was related directly to BMI and inflammation. The role of HMGB1 was demonstrated for the liver of the obese group. We demonstrated the relations among HMGB1, BMI, obesity and inflammation.
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Affiliation(s)
- M Erdal
- Department of Histology and Embryology, Gulhane Medical School, Ankara, Turkey
| | - B Z Altunkaynak
- Department of Histology and Embryology, Medical School, Istanbul Okan University , Istanbul , Turkey
| | - A Kocaman
- Department of Histology and Embryology, Medical School, Ondokuz Mayis University , Samsun , Turkey
| | - I Alkan
- Department of Histology and Embryology, Medical School, Ondokuz Mayis University , Samsun , Turkey
| | - E Öztas
- Department of Histology and Embryology, Gulhane Medical School, Ankara, Turkey
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11
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Identification of changes in serum analytes and possible metabolic pathways associated with canine obesity-related metabolic dysfunction. Vet J 2018; 244:51-59. [PMID: 30825895 DOI: 10.1016/j.tvjl.2018.12.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2018] [Revised: 08/31/2018] [Accepted: 12/07/2018] [Indexed: 12/17/2022]
Abstract
The main objective of this study was to identify analytes that could change and that could help to clarify the metabolic and physiopathological changes related to canine obesity-related metabolic dysfunction (ORMD). For this, serum from 35 overweight/obese dogs, with and without ORMD, was submitted to a comprehensive panel of biochemistry analysis, a gel-free tandem mass tag isobaric label-based proteomic analysis, and, finally, selected proteins were used as a starting point for creating a protein interaction network. Dogs with ORMD showed significantly higher serum concentrations of alanine aminotransferase (ALT), alkaline phosphatase (ALP), Ca, total proteins, albumin, total cholesterol, triglycerides, glucose, and butyrylcholinesterase (BChE) activity in comparison with dogs without ORMD. Proteomic analysis revealed that 23 proteins related to lipid metabolism, the complement factor system, cellular adhesion and functionality, inflammation, and coagulation were altered in dogs with ORMD. Finally, the obtained protein interaction network highlighted that the central term of this network was the negative regulation of the immune response. These data suggest that canine ORMD is associated with changes in analytes that reflect altered lipid metabolism, and liver and immune function impairment and suggests the potential for a prothrombotic state and lung function alterations.
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12
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Nadal J, Ponz C, Margalida A. Body proportions for the facilitation of walking, running and flying: the case of partridges. BMC Evol Biol 2018; 18:176. [PMID: 30477435 PMCID: PMC6260763 DOI: 10.1186/s12862-018-1295-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Accepted: 11/16/2018] [Indexed: 11/22/2022] Open
Abstract
Background Predation is one of the most important natural selection forces. Prey species can optimize feeding behavior and escape from predators based on mobility conditioned by body proportions. With age, mobility capacity increases and individuals are more efficient in finding resources and safety (e.g., food and refuge). Birds’ mobility is driven by the dimensions, of the head and torso, as well as the extremities and flight feathers. To assess the relationship between body traits and to understand how body proportions are organized in wild Red-legged partridges (Alectoris rufa), we used biometric data from nearly 14,000 individuals, obtained during a long-term study (1988–2011) on a wild population. Results We used GLMs and regressions to model the relationship between body mass and the size of body parts. We found that wing length was the morphological part best explained by other body trait measures. Wing length models were better predictors in juveniles than in adults and in females than in males. Wing length and feather length, mass and total length are the most strongly related parts; mass and wing length, total length and feather length are moderately related. The association between mass and wing length is intermediated by feather length and total length. Conclusions Social inclusion, feeding and predator evasion may be affected by body structure intermediated by mobility and health. Our results suggest that proportions of the body, extremities and flight feathers drive mobility which is intimately associated with ecology, biological efficiency, health and physical optimization. Our findings showed that wing size was strongly allied to other body part measurements, enhancing the importance of body structure conformation for flight. Our study highlights the scaled relationship of body structure among age-sex classes and its relevance to social cohesion, flock movement and the balance between predation and starvation. Electronic supplementary material The online version of this article (10.1186/s12862-018-1295-x) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Jesús Nadal
- Department of Animal Science, Division of Wildlife, Faculty of Life Sciences and Engineering, University of Lleida, Lleida, Spain.
| | - Carolina Ponz
- Department of Animal Science, Division of Wildlife, Faculty of Life Sciences and Engineering, University of Lleida, Lleida, Spain
| | - Antoni Margalida
- Department of Animal Science, Division of Wildlife, Faculty of Life Sciences and Engineering, University of Lleida, Lleida, Spain.,Institute for Game and Wildlife Research, IREC (CSIC-UCLM-JCCM), 13005, Ciudad Real, Spain.,Division of Conservation Biology, Institute of Ecology and Evolution, University of Bern, Bern, Switzerland
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Canter RJ, Le CT, Beerthuijzen JM, Murphy WJ. Obesity as an immune-modifying factor in cancer immunotherapy. J Leukoc Biol 2018; 104:487-497. [PMID: 29762866 PMCID: PMC6113103 DOI: 10.1002/jlb.5ri1017-401rr] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2017] [Revised: 04/17/2018] [Accepted: 04/18/2018] [Indexed: 12/18/2022] Open
Abstract
Immunotherapy has achieved breakthrough status in many advanced stage malignancies and is rapidly becoming the fourth arm of cancer treatment. Although cancer immunotherapy has generated significant excitement because of the potential for complete and sometimes durable responses, there is also the potential for severe and occasionally life-threatening toxicities, including cytokine release syndrome and severe autoimmunity. A large body of work also points to a "metainflammatory" state in obesity associated with impairment of immune responses. Because immune checkpoint blockade (and other cancer immunotherapies) have altered the landscape of immunotherapy in cancer, it is important to understand how immune responses are shaped by obesity and how obesity may modify both immunotherapy responses and potential toxicities.
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Affiliation(s)
- Robert J. Canter
- University of California, Davis, School of Medicine, Department of Surgery, Division of Surgical Oncology, Sacramento, CA 95817
| | - Catherine T Le
- University of California, Davis, School of Medicine, Departments of Dermatology and Internal Medicine, Sacramento, CA 95817
| | - Johanna M.T. Beerthuijzen
- University of California, Davis, School of Medicine, Departments of Dermatology and Internal Medicine, Sacramento, CA 95817
| | - William J. Murphy
- University of California, Davis, School of Medicine, Departments of Dermatology and Internal Medicine, Sacramento, CA 95817
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Effects of body fat mass and therapeutic weight loss on vitamin D status in privately owned adult dogs. J Nutr Sci 2018; 7:e17. [PMID: 29721315 PMCID: PMC5921043 DOI: 10.1017/jns.2018.7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2017] [Revised: 02/24/2018] [Accepted: 02/26/2018] [Indexed: 12/30/2022] Open
Abstract
More than one-third of humans and companion dogs in Western societies are overweight or obese. In people, vitamin D deficiency is widespread and associated with obesity, a now recognised inflammatory state. Low vitamin D status occurs in dogs with inflammatory conditions, but its relationship with obesity has not been investigated. In otherwise healthy privately owned adult dogs of ideal body condition (control, n 7) and dogs with overweight to obese body condition (treatment, n 8), serum 25-hydroxyvitamin D (25(OH)D) concentration and body composition as inferred from 2H-labelled water dilution space were evaluated. Subsequently, the dogs were transitioned to a commercial canine therapeutic weight-loss diet; control dogs were fed to maintain body weight and treatment dogs were energy-restricted to achieve a safe weight-loss rate. Thereafter, serum 25(OH)D concentration was re-evaluated 8 weeks after diet transition, and at the study end, which was 6 months or when ideal body condition was achieved. At study end, body composition analysis was repeated. Initial body condition scores and percentage body fat were positively correlated (ρ = 0·891; P < 0·001). However, percentage body fat and serum 25(OH)D concentration were not significantly correlated. Final serum 25(OH)D concentrations were greater (P < 0·05) than initial concentrations for control and treatment groups, indicating a diet but not weight-loss effect on vitamin D status. These findings suggest that vitamin D status of dogs is not affected by obesity or loss of body fat with therapeutic weight reduction.
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Key Words
- 24,25(OH)2D3, 24,25-dihydroxyvitamin D3
- 25(OH)D, 25-hydroxyvitamin D
- 25(OH)D3, 25-hydroxyvitamin D3
- 25-Hydroxyvitamin D
- Adiposity
- BCS, body condition score
- BF%, body fat percentage
- BF, body fat
- BFM, body fat mass
- BLM, body lean mass
- BW, body weight
- Canine weight loss
- Cholecalciferol
- NRC RA, National Research Council recommended allowance
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Aguilar EG, Murphy WJ. Obesity induced T cell dysfunction and implications for cancer immunotherapy. Curr Opin Immunol 2018; 51:181-186. [PMID: 29655021 DOI: 10.1016/j.coi.2018.03.012] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2017] [Revised: 02/09/2018] [Accepted: 03/13/2018] [Indexed: 12/12/2022]
Abstract
Obesity has been shown to increase risk for a number of different disorders, including cancer. In addition, obesity is also associated with immune dysfunction, which could contribute to its strong association with other comorbidities. Recently, the immune system has been found to be heavily regulated by changes in metabolism. In particular, T cells are able to respond to intrinsic metabolic regulatory mechanisms, as well as extrinsic factors such as the changes in metabolite availability. The dysfunctional metabolic environment created by obesity could therefore have a direct impact on T cell responses. In this review, we highlight recent findings in the fields of T cell biology and obesity, with a focus on mechanisms driving T cell dysfunction and potential implications for immunotherapeutic treatment of cancer.
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Affiliation(s)
- Ethan G Aguilar
- Department of Dermatology, UC Davis School of Medicine, Sacramento, CA 95816, USA
| | - William J Murphy
- Department of Dermatology, UC Davis School of Medicine, Sacramento, CA 95816, USA; Department of Internal Medicine, UC Davis School of Medicine, Sacramento, CA 95817, USA.
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Abstract
Obesity has been shown to increase risk for a number of different disorders, including cancer. In addition, obesity is also associated with immune dysfunction, which could contribute to its strong association with other comorbidities. Recently, the immune system has been found to be heavily regulated by changes in metabolism. In particular, T cells are able to respond to intrinsic metabolic regulatory mechanisms, as well as extrinsic factors such as the changes in metabolite availability. The dysfunctional metabolic environment created by obesity could therefore have a direct impact on T cell responses. In this review, we highlight recent findings in the fields of T cell biology and obesity, with a focus on mechanisms driving T cell dysfunction and potential implications for immunotherapeutic treatment of cancer.
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Affiliation(s)
- Ethan G Aguilar
- Department of Dermatology, UC Davis School of Medicine, Sacramento, CA 95816, USA
| | - William J Murphy
- Department of Dermatology, UC Davis School of Medicine, Sacramento, CA 95816, USA; Department of Internal Medicine, UC Davis School of Medicine, Sacramento, CA 95817, USA.
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Raghu C, Ekena J, Cullen JM, Webb CB, Trepanier LA. Evaluation of potential serum biomarkers of hepatic fibrosis and necroinflammatory activity in dogs with liver disease. J Vet Intern Med 2018; 32:1009-1018. [PMID: 29485210 PMCID: PMC5980386 DOI: 10.1111/jvim.15064] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Revised: 01/08/2018] [Accepted: 01/16/2018] [Indexed: 02/06/2023] Open
Abstract
Background Serum interleukin 6 (IL‐6), chemokine ligand 2 (CCL2), C‐reactive protein (CRP), and the ratio of aspartate transaminase to alanine transaminase (AST:ALT) have been correlated with fibrosis and necroinflammatory activity in humans with various hepatopathies. Hypothesis/Objectives To determine whether increases in serum IL‐6, CCL2, CRP, or AST:ALT were associated with moderate to severe fibrosis or necroinflammatory activity in dogs with various hepatopathies. Animals Forty‐four client‐owned dogs with clinical evidence of liver disease and 10 healthy purpose‐bred dogs, all undergoing liver biopsies by laparoscopy or laparotomy. Methods Measurement of serum IL‐6, CCL2, CRP, AST, and ALT before scheduled liver biopsy and evaluation of liver histopathology using the METAVIR scoring system used in human medicine, blinded to clinical presentation. Results Median serum IL‐6 was approximately twice as high in dogs with high fibrosis scores (15.5 pg/mL; range, 1.4 to 235 pg/mL) compared to dogs with low fibrosis scores (7.6 pg/mL; range, 1.4 to 148.1 pg/mL), with marginal significance (P = .05). Median serum CCL2 was significantly higher in dogs with active necroinflammation (444 pg/mL; range, 144 to 896 pg/mL) compared to dogs without detectable necroinflammation (326 pg/mL; range, 59 to 1692 pg/mL; P = .008), but with considerable overlap between groups. Neither serum CRP nor AST:ALT ratios were significantly different based on fibrosis or necroinflammatory scores. Conclusions and Clinical Importance Because of substantial variability among dogs, single measurements of IL‐6 and CCL2 have limited diagnostic utility for identifying fibrosis or necroinflammation, respectively, in dogs with various chronic liver diseases. The value of these biomarkers should be explored further in monitoring response to treatment in individual dogs with chronic hepatopathies.
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Affiliation(s)
- Chantel Raghu
- Department of Medical Sciences, School of Veterinary Medicine, University of Wisconsin-Madison, Madison, Wisconsin
| | - Joanne Ekena
- Department of Medical Sciences, School of Veterinary Medicine, University of Wisconsin-Madison, Madison, Wisconsin
| | - John M Cullen
- Department of Public Health and Pathobiology, North Carolina State University, College of Veterinary Medicine, Raleigh, North Carolina
| | - Craig B Webb
- Department of Clinical Sciences, Colorado State University, College of Veterinary Medicine and Biomedical Sciences, Fort Collins, Colorado
| | - Lauren A Trepanier
- Department of Medical Sciences, School of Veterinary Medicine, University of Wisconsin-Madison, Madison, Wisconsin
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