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Dimri U Ranjan R Kumar N Sharma MC Swarup D Sharma B Kataria M 《Veterinary parasitology》2008,154(1-2):98-102
Status of certain oxidative stress indices and zinc and copper concentrations in blood were estimated in dogs with localized demodicosis (LD) and generalized demodicosis (GD). In comparison to healthy control, erythrocytic lipid peroxides level and superoxide dismutase activity were significantly (P < 0.01) higher in both LD as well as GD. However, level of reduced glutathione and activity of catalase were significantly (P < 0.01) lower in both LD and GD. Blood zinc and copper levels in dogs with LD and GD were significantly (P < 0.01) lower than healthy control. Significant (P < 0.01) differences were also observed in different oxidative stress indices and zinc and copper levels in between LD and GD groups. From the present study, it was concluded that demodicosis is associated with oxidative stress and antioxidant supplementation may be beneficial in management of canine demodicosis. 相似文献
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Singh SK Dimri U Sharma MC Swarup D Sharma B Pandey HO Kumari P 《Veterinary immunology and immunopathology》2011,144(3-4):487-492
The aim of the present study was to evaluate the status of apoptosis in peripheral blood leukocytes of dogs with demodicosis. A total of 26 dogs suffering from demodicosis, and positive for Demodex canis mites by skin scraping, participated in the study, 13 with localized demodicosis (LD) and 13 with generalized demodicosis (GD). A further 13 clinically healthy dogs, all of whom were negative for mites upon skin scraping, were used as controls. The dogs with GD revealed significantly higher (P ≤ 0.0001) percentage of leukocytes with externalization of phosphatidylserine (PS) and depolarized mitochondrial membrane potentials (ΔΨm) as compared with the dogs with LD and healthy controls. These dogs also revealed significantly lower values (P ≤ 0.0001) of hematological parameters viz. hemoglobin, total erythrocytes count total leukocytes count, lymphocytes, monocytes and neutrophils. Significantly higher (P ≤ 0.0001) percentages of leukocytes with externalization of PS and depolarized ΔΨm were also found in dogs with LD as compared with the healthy controls. These dogs also revealed significantly lower values of Hb (P ≤ 0.0001), TEC (P=0.025), TLC (P ≤ 0.0001), lymphocytes (P=0.008), monocytes (P ≤ 0.0001) and neutrophils (P=0.03). It is concluded that premature apoptosis of PBL may be implicated in the immunosuppression of the dogs with demodicosis. 相似文献
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Fujiwara S Yasunaga S Iwabuchi S Masuda K Ohno K Tsujimoto H 《Veterinary immunology and immunopathology》2003,93(1-2):9-20
Japanese cedar (Cryptomeria japonica, CJ) pollinosis is mediated by type-I hypersensitivity and induces seasonal rhinitis and conjunctivitis in humans. Previous studies showed that dogs could be experimentally sensitized with CJ pollen. In this study, we carried out quantitative analysis of mRNA levels of various cytokines in the peripheral blood mononuclear cells (PBMC) of 12 dogs experimentally sensitized to Japanese cedar pollen. Experimental sensitization was carried out by injection of crude CJ pollen extract with aluminium hydroxide gel. The expression levels of interleukin (IL)-1beta, IL-2, IL-4, IL-6, IL-8, IL-10, IL-18, interferon (IFN)-gamma, transforming growth factor (TGF)-beta(1), and tumor necrosis factor (TNF)-alpha mRNAs in the PBMC were quantified using a real-time sequence detection system. In the PBMC tested without culture, the expression levels of IL-8 and TNF-alpha mRNAs in experimentally sensitized dogs were significantly higher than those in control dogs. The expression level of IFN-gamma mRNA in the sensitized group was significantly lower than that in the control group. When the PBMCs were cultured in the presence of CJ pollen extract, the level of IL-4 mRNA expression was markedly increased in the PBMC from the experimentally sensitized dogs. In the PBMC stimulated with the CJ pollen extract, the expression level of IL-2 mRNA in the sensitized group was also significantly higher than that in the control group. Our data indicated that a Th2 response and proliferation of PBMC occur in response to the sensitizing antigen in dogs experimentally sensitized with CJ pollen, and revealed the presence of antigen-specific Th2 cells in this canine model. In addition, the expression levels of the mRNAs encoding proinflammatory cytokines were shown to be elevated after CJ pollen sensitization, indicating the activation of monocytes and macrophages. 相似文献
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Wiinberg B Spohr A Dietz HH Egelund T Greiter-Wilke A McDonough SP Olsen J Priestnall S Chang YF Simpson KW 《Journal of veterinary internal medicine / American College of Veterinary Internal Medicine》2005,19(1):4-14
The present study sought to quantitatively examine mucosal inflammatory and immune responses in dogs with gastritis and the relationship of these responses to infection with Helicobacter. Gastric biopsies from 30 dogs were evaluated for B- and T-lymphocytes, neutrophils, eosinophils, macrophages, and mast cells. Mucosal atrophy, fibrosis, cellularity, and severity of gastritis were graded qualitatively. Messenger-RNA (mRNA) for actin, interleukin-1beta (IL-1beta), IL-4, IL-8, and IL-10, transforming growth factor beta (TGF-beta), and interferon gamma (IFN-gamma) was quantified by polymerase chain reaction (PCR). The presence of Helicobacter spp. was determined by urease activity, histology, PCR, and enzyme-linked immunosorbent assay. mRNA for IL-1beta, IL-8, IL-10, TGF-beta, and IFN-gamma was detected in most dogs. IL-4 mRNA was detected in only 1 dog. Correlations were observed for IL-1beta versus IL-8 and IL-10; IL-8 versus IL-10, IFN-gamma, and TGF-beta; and IL-10 versus IFN-y. Mucosal pathology was related to cytokine mRNA expression (neutrophils to IL-8 and IFN-gamma, macrophages and lymphocytes to IFN-gamma, and fibrosis to IL-1beta). Gastritis was categorized as lymphoplasmacytic in all dogs, and its histologic severity correlated with atrophy, infiltration with lymphocytes and macrophages, and expression of IL-10 and IFN-gamma. Of the dogs examined, 76.7% were infected with Helicobacter spp. Infection was associated with increased expression of TGF-beta and fibrosis. Circulating anti-Helicobacter immunoglobulin G titers were higher in uninfected than infected dogs. We conclude that lymphoplasmacytic gastritis in dogs is characterized by concurrent activation of proinflammatory and immunomodulatory cytokines, with increased mRNA expression related to mucosal pathology. No significant associations between Helicobacter infection and proinflammatory cytokine expression, severity of gastritis, or differences in the pathogenicity of different Helicobacter spp. were found. 相似文献
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Allergen challenge decreases mRNA expression of regulatory cytokines in whole blood of high-IgE beagles 总被引：1，自引：0，他引：1
The kinetics of cytokine expression was evaluated in whole blood from high-IgE beagles previously sensitized to house dust mites (HDM) and known to develop clinical signs compatible with atopic dermatitis (AD) upon allergen exposure. Six high-IgE beagles were environmentally challenged daily for 3 h on three consecutive days with a HDM solution. Clinical signs were evaluated before, during, and after the conclusion of the challenge (days 0, 2, 4 and 17) and expression analyses of Th2 (IL-4 and IL-13) and regulatory (IL-10 and TGF-beta) cytokine mRNA were undertaken on blood samples at each time point using real-time polymerase chain reaction. Multiple comparison used to detect significant differences in clinical scores and expression levels of cytokine mRNA revealed that the clinical scores on days 2 and 4 were higher than those on days 0 and 17 (P < 0.05) but no temporal differences in the expression levels of IL-4 and IL-13 mRNA. Expression of TGF-beta mRNA was, however, significantly lower on day 4 (P < 0.05) and the expression of IL-10 mRNA on days 4 and 17 was significantly lower than those on days 0 and 2 (P < 0.05). The results indicate that allergen challenge decreases mRNA expression of regulatory cytokines in whole blood without enhanced mRNA expression of Th2 cytokines and suggest aberrant regulatory T-cell function in the immunopathogenesis of AD in high-IgE beagles. 相似文献
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Sanchez-Robert E Altet L Alberola J Rodriguez-Cortés A Ojeda A López-Fuertes L Timon M Sanchez A Francino O 《Veterinary immunology and immunopathology》2008,125(1-2):168-175
Canine visceral leishmaniasis (CVL) is caused by Leishmania infantum, an intracellular protozoan parasite that causes a severe infectious disease. To evaluate the gene expression profile associated to CVL in vivo, we have measured monthly by real-time PCR over one year the IL-4, IL-10, IL-12, IL-13, IFN-gamma, TGF-beta and TNF-alpha mRNA levels in peripheral blood mononuclear cells in 6 experimentally infected dogs that exhibited different progressions of the illness. While in two dogs no parasite, or a very low number of parasites, was detected and the two dogs did not show any clinico-pathological abnormalities at the end of the study (L dogs), for the remaining dogs high parasite loads were detected and they developed clinical leishmaniasis (H dogs). The L dogs have null expression of both IL-4 and IL-13 for the first 4 months after the infection, whereas an early IL-4 and IL-13 expression occurs in this period of infection in most of the dogs that developed clinical leishmaniasis (H dogs). Furthermore, a higher IFN-gamma expression was associated with the increase of parasite load and clinical status in these dogs. Moreover, the high variability of expression at the pre-infection stage causes us to reject the possibility that the basal levels of these cytokines indicate the prognosis of the subsequent response against infection. 相似文献
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Kurata K Iwata A Masuda K Sakaguchi M Ohno K Tsujimoto H 《Veterinary immunology and immunopathology》2004,102(4):441-450
Oligodeoxynucleotides containing the cytosine-phosphate-guanine (CpG) motif (CpG-ODNs) have been shown to induce T(H)1 immune responses in animals. Since the sequences of CpG-ODNs that induce T(H)1 responses are considered to vary among animal species, it is necessary to identify effective CpG-ODNs in each animal. In order to identify the sequences of CpG-ODNs that induce T(H)1 responses in dogs, mRNA expression and protein production of IFN-gamma were examined in peripheral blood mononuclear cells (PBMCs) from healthy dogs treated with 11 kinds of synthetic CpG-ODNs. One of the 11 CpG-ODNs (No. 2 CpG-ODN, 5'-GGTGCATCGATGCAGGGGGG-3') was shown to significantly increase mRNA expression and protein production of IFN-gamma in canine PBMCs in a manner dependent on the sequence of the CpG motif. This CpG-ODN also enhanced the expression of IL-12 p40 mRNA in canine PBMCs, whereas expression of IL-12 p35, IL-18, and IL-4 mRNAs was not induced by this CpG-ODN. These results indicate that this CpG-ODN was able to produce IFN-gamma by induction of T(H)1-skewed immune response in dogs. CpG-ODNs may be useful for inducing prophylactic and therapeutic immunity against allergic diseases, viral infection, and tumors in dogs. 相似文献
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Shirasuna K Matsumoto H Kobayashi E Nitta A Haneda S Matsui M Kawashima C Kida K Shimizu T Miyamoto A 《The Journal of reproduction and development》2012,58(1):84-90
In cows, interferon-tau (IFNT) regulates maternal recognition around days 15-19 after artificial insemination (AI). The present study hypothesized that if key target genes of IFNT are clearly upregulated in earlier stages of pregnancy, these genes could be use as indices of future pregnancy in cows. Therefore, we determined the expression of these genes in peripheral blood mononuclear leukocytes (PBMCs) and polymorphonuclear granulocytes (PMNs) during the maternal recognition period (MRP). Twenty multiparous Holstein cows were subjected to AI on day 0 and categorized into the following groups: pregnancy (Preg, n = 9), embryonic death (ED, n = 5) and non-pregnancy (NP, n = 6). Progesterone levels in the Preg group were higher than those in the NP group on days 12-21. ISG15 and OAS-1 (IFN-stimulated genes: ISGs) mRNA in PBMCs on day 8 was higher in the Preg group than in the NP group, and these mRNAs in PMNs was higher in the Preg group on day 5 than in the NP and ED groups. Interleukin-10 (IL-10, Th2 cytokine) mRNA expression increased on day 8 in the PBMCs of pregnant cows. Tumor necrosis factor α (TNFα, Th1 cytokine) mRNA expression was stable in all groups. In an in vitro cell culture experiment, IFNT stimulated mRNA expression of ISGs in both PBMCs and PMNs. IFNT stimulated IL-10 mRNA expression in PBMCs, whereas IFNT increased TNFα mRNA levels in PBMCs in vitro. The results suggest that ISGs and IL-10 could be responsive to IFNT before the MRP in peripheral blood immune cells and may be useful target genes for reliable indices of pregnancy before the MRP. 相似文献
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Splenic immune responses during canine visceral leishmaniasis 总被引：1，自引：0，他引：1
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Quantification of mRNA encoding cytokines and chemokines in nasal biopsies from dogs with sino-nasal aspergillosis 总被引：1，自引：0，他引：1
Canine sino-nasal aspergillosis is usually caused by Aspergillus fumigatus and is similar to human chronic erosive non-invasive fungal sinusitis. The pathogenesis of the disease is poorly understood. We investigated the nature of the local immune response mounted in canine sino-nasal aspergillosis. Quantitative RT-PCR was carried out on RNA isolated from nasal biopsies from diseased and control dogs, using specific assays designed to amplify mRNA encoding a panel of cytokines and chemokines. Canine sino-nasal aspergillosis was associated with significantly increased expression of mRNA encoding MCP-1, -2, -3 and -4, IL-8, IL-10, IL-18 and TNF-alpha relative to controls (P<0.01) but there was no difference between groups with respect to IL-4, IL-5, IL-6, IL-12, TGF-beta, and eotaxin-2 and -3. The up-regulation of proinflammatory cytokines and chemokines related to the influx of phagocytic cells might account for the localisation of this infection to the upper respiratory tract. The up-regulation of the expression of the immunomodulatory cytokine IL-10 in nasal tissue from affected dogs might be important in limiting the extent of local tissue destruction, but might also account for the fact that infected dogs are generally unable to clear this infection spontaneously. 相似文献
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Abstract The experimental hypothesis testéd was that dogs with generalized demodicosis have significantly lower levels of interleukin-2 (IL-2) production and IL-2 receptor expression as compared with normal dogs. The specific objective of this study was to compare the production of IL-2 and IL-2 receptor expression of peripheral blood mononuclear cells in normal dogs and dogs with generalized demodicosis. Ten dogs with juvenile-onset generalized demodicosis were evaluated. Dogs with generalized demodicosis had a significantly lower in vitro lymphocyte blastogenesis response (P < 0.006), fewer cells expressing IL-2 receptors (P < 0.03), and decreased IL-2 production (P < 0.01) than control dogs. Resumen La hipótesis experimental fue que los perros con demodicosis generalizada tienen niveles significativamente inferiores de producción y expresión de receptores de interleuquina-2 (IL-2) comparado con perros normales. El objetivo especifico de este estudio fue el de comparar le producción y expresión de receptores de IL-2 en células mononucleares de sangre periférica en perros normales y en perros con demodicosis generalizada. Se evaluaron diez perros con demodicosis generalizada iniciada en edad temprana. Los perros con demodicosis generalizada tenian in vitro una respuesta blastogénica linfocitaria inferior (P < 0.006), menos células con expresión de receptores de IL-2 (P < 0.03) y una disminución en la producción de IL-2 (p<0.01) respecto a los perros control. [Lemarie, S.L., Horohov, D.W. Evaluation of interleukin-2 production and interleukin-2 receptor expression in dogs with generalized demodicosis. (Evaluación de la producción y expresión de recepetores de interleuquina-2 en perros con demodicosis generalizada.) Veterinary Dermatology 1996; 7 : 213–219.] Résumé L'hypothèse expérimentale est que les chiens à démodécie généralisée présente une diminution significative du taux d'interleukine 2 (IL-2) et de l'expression des récepteurs de l'interleukine 2 comparativement à des chiens sains. L'objectif de cette étude est de comparer la production d'I12 et l'expression des récepteurs de l'IL-2 par des lymphocytes sanguins périphériques de chiens témoins et de chiens atteints de démodécie généralisée. Dix chiens avec une démodécie généralisée juvenile ont été testés. Les chiens à démodécie généralisée présentent une transformation lymphoblastique plus basse (p< 0.006), moins de cellules exprimant les récepteurs IL-2 (p<0.03) et une diminution de la production d'IL-2 (p<0.01) par rapport aux chiens témoins. [Lemarie, S.L., Horohov, D.W. Evaluation of interleukin-2 production and interleukin-2 receptor expression in dogs with generalized demodicosis. (Evaluation de la production d'interleukine 2 et de l'expression des récepteurs de l'interleukine 2 chez des chiens à démodécie généralisée.) Veterinary Dermatology 1996; 7 : 213–219.] Zusammenfassung Es wurde die experimentelle Hypothese getestét, daß Hunde mit generalisierter Demodikose über signifikant niedrigere Spiegel an Interieukin2-(IL-2)Produktion und IL-2-Rezeptorexpression verfügen im Vergleich zu gesunden Hunden. Der wesentilche Gegenstand dieser Untersuchung war, die Produktion von IL-2 und die IL-2Rezeptorexpression in den mononukleären Zellen des peripheren Blutes bei gesunden Hunden und solchen mit generalisierter Demodikose zu vergleichen. Zehn Hunde mit juvenilem Beginn von generalisierter Demodikose wurden untersucht. Hunde mit generalisierter Demodikose hatten eine signifikant niedrigere in vitro-Reaktion der Lymphozytenblasogenese (P < 0, 006), weniger Zellen, die IL-2Rezeptoren zeigten (P < 0,03) und eine verminderte IL-2Produktion (P < 0,01) als die Kontrollhunde. [Lemarie, S.L., Horohov, D.W. Evaluation of interleukin-2 production and interleukin-2 receptor expression in dogs with generalized demodicosis (Untersuchungen über die Interleukin2-Produktion und Interleukin2-Rezeptorexpression bei Hunden mit generalisierter Demodikose) Veterinary Dermatology 1996; 7 : 213–219.] 相似文献
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Riihimäki M Raine A Art T Lekeux P Couëtil L Pringle J 《Veterinary immunology and immunopathology》2008,122(3-4):256-264
The aim of this study was to investigate mRNA levels of cytokines in bronchial epithelium in horses with recurrent airway obstruction (RAO) during acute crisis and remission. Additionally, cytokine mRNA levels in endobronchial biopsies and bronchoalveolar lavage (BAL) cells were compared. Seven RAO horses were examined while in respiratory crisis following provocation and again while in remission after 2 months on pasture, during which time six healthy horses on pasture were also examined. Quantitative real-time PCR (RT-PCR) was used to assess mRNA expression for cytokines IL-5, IL-6, IL-8, IL-10, IL-17 and transforming growth factor beta1 (TGF-beta1) in endobronchial biopsies and bronchoalveolar lavage. Expression of IL-8 mRNA was significantly upregulated during crisis in both endobronchial biopsies and BAL cells (p=0.036), while there was a similar trend for upregulation of IL-10 mRNA only in BAL cells that approached significance (p=0.059). Moreover, during crisis the expression of IL-8 mRNA in BAL cells was positively correlated to relative IL-6 mRNA expression (r(s)=0.971, p=0.001) and bronchial epithelial expression of IL-10 and TGF-beta1 mRNA were positively correlated (r(s)=0.943, p=0.005). In comparing the relationship of mRNA expression in BAL to biopsy in individual RAO horses, there was a positive correlation with IL-6 to IL-8 mRNA expression in BAL during respiratory crisis (r(s)=0.971, p=0.001) that also correlated positively with IL-8 expression in biopsies on pasture (r(s)=0.986, p<0.0001 for both). Regarding RAO horses at pasture versus controls neither the cytokine mRNA levels in endobronchial biopsy nor in BAL cells differed significantly. These results further support previous findings that IL-8 mRNA in both BAL cells and bronchial epithelium is upregulated in RAO horses during crisis. However, apart from IL-8, it appears that expression of other cytokines, including IL-5, IL-6, IL-10, IL-17 and TGF-beta1 in bronchial epithelium does not necessarily mirror cytokine expression in BAL cells in individual horses with RAO. Accordingly, examination of markers of inflammation in endobronchial tissue provides complementary but not necessarily identical information to that obtained in BAL cells. Given the potential for repeated sampling over time bronchial biopsy can serve as an invaluable additional tool for investigation of time-dependent changes in inflammatory process in this animal model of asthma. 相似文献