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1.
Reprod Domest Anim ; 59(5): e14615, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38798181

RESUMO

Present study was designed to evaluate the role of virulence factor genes (papG, cnf1 and hylA) in the pathogenesis of canine pyometra. Antimicrobial susceptibility test and detection of virulence genes were performed Escherichia coli (E. coli) detected in uterine swab samples. Animals were divided into two groups based on the presence (VF+, n:14) or absence (VF-, n:7) of the virulence factor genes papG, cnf1 and hylA. Blood and tissue glutathione peroxidase activity, uterine histopathologic analysis and AQP3, ESR1, PGR, OXTR gene expressions were determined in both groups. Statistical analyses were performed using Stata version 15.1. All E. coli isolates were susceptible to amikacin, whereas resistant to ampicillin, amoxicillin/clavulanic acid and lincomycin. None of the isolates were susceptible to cefotaxime. E. coli isolates had at least one virulence gene. The most prevalent gene was fimH (100%), followed by fyuA (95.8%), usp (83.3%), sfa (75%), cnf1 and hlyA (70.8%) genes. Blood GPx activity was greater in VF+ animals. On the other hand, uterine tissue GPx activity was lower in VF+ group compared to the control group. Expression levels of AQP3 were upregulated more than fivefold in VF-dogs compared to the control group. In addition, AQP3 expression levels were found approximately threefold higher in VF (-) than VF (+) group (p < .05). Varying degree of inflammation noted for all animals with pyometra, but the presence of bacteria noted only in VF+ animals. In conclusion, the presence of virulence factor genes does not play a role in the histopathological degree of inflammation, the presence of bacteria was found to vary. Serum GPx activity increased in VF+ animals. While the hormone receptor expressions were similar, AQP expression was upregulated in the absence of virulence factor genes.


Assuntos
Aquaporina 3 , Doenças do Cão , Escherichia coli , Glutationa Peroxidase , Piometra , Útero , Fatores de Virulência , Animais , Feminino , Fatores de Virulência/genética , Fatores de Virulência/metabolismo , Aquaporina 3/genética , Aquaporina 3/metabolismo , Cães , Piometra/veterinária , Piometra/microbiologia , Piometra/patologia , Doenças do Cão/microbiologia , Útero/patologia , Útero/microbiologia , Útero/metabolismo , Escherichia coli/genética , Escherichia coli/patogenicidade , Glutationa Peroxidase/genética , Glutationa Peroxidase/metabolismo , Infecções por Escherichia coli/veterinária , Infecções por Escherichia coli/microbiologia , Antibacterianos/farmacologia , Regulação para Baixo , Testes de Sensibilidade Microbiana/veterinária
2.
J Vet Sci ; 19(5): 620-626, 2018 Sep 30.
Artigo em Inglês | MEDLINE | ID: mdl-30041285

RESUMO

Canine transmissible venereal tumor (CTVT) is a tumor that commonly occurs in genital and extragenital sites of both genders. Long interspersed nuclear elements (LINE-1) retrotransposon has a pivotal role in allogenic transfection among uncontrolled dog populations. This study aimed to perform pathomorphological, immunohistochemical, and in situ polymerase chain reaction (PCR) evaluation of CTVT (n = 18) in transfected dogs during chemotherapy. Immunohistochemically, tumor phases were investigated by using specific markers (CD3, CD4, CD8, CD79, and transforming growth factor beta [TGF-ß]), and investigated an amplified specific sequence of TVT LINE-1 retrotransposon by in situ PCR. Polyhedral-shaped neoplastic cells that had large, round, hypo/hyperchromatic nuclei and eosinophilic cytoplasm were detected. All marker results were positive, especially in the early weeks of recovery. CD4 and TGF-ß markers were conspicuously positive at the initial stage. In situ PCR LINE-1 sequence was initially positive in only four cases. It is believed that the CD and TGF-ß markers provide phase identification at tumor initiation and during chemotherapy. It is thought that presence of T and B lymphocytes, which have roles in cellular and humoral immunity, is needed so that regression of the tumor is possible.


Assuntos
Biomarcadores Tumorais/análise , Doenças do Cão/diagnóstico , Elementos Nucleotídeos Longos e Dispersos , Tumores Venéreos Veterinários/diagnóstico , Animais , Antígenos de Diferenciação de Linfócitos T/análise , Antígenos CD79/análise , Doenças do Cão/metabolismo , Doenças do Cão/terapia , Cães , Feminino , Masculino , Transfecção/veterinária , Tumores Venéreos Veterinários/metabolismo , Tumores Venéreos Veterinários/terapia
3.
CNS Neurol Disord Drug Targets ; 17(2): 132-143, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-29546838

RESUMO

BACKGROUND & OBJECTIVE: Aroclor 1254 is a widespread toxic compound of Polychlorinated Biphenyls (PCBs), which can create significant nervous problems. No remedies have been found to date. The aim of this study was to reveal the damage that occurs in the central nervous system of rat pups exposed to Aroclor 1254 in the prenatal period and to show the inhibiting effect of curcumin, which is a strong anti-oxidant and neuroprotective substance. METHOD: The study established 3 groups of adult female and male Wistar albino rats. The rats were mated within these groups and the offspring rats were evaluated within the group given Aroclor 1254 only (n=10) and the group was given both Aroclor 1254 and curcumin (n=10) and the control group (n=10). The groups were compared in respect of pathomorphological damage. The immunohistochemical evaluation was made of 8-hydroxdeoxyguanosine (8-OHdG), 4-hydroxynoneal (4HNE), myelin basic protein (MBP) expressions and TUNEL reaction. The biochemical evaluation was made of the changes in the TAS-TOS and Neuron Specific Enolase (NSE) levels. Damage was seen to have been reduced with curcumin in the 8OHdG and TUNEL reactions, especially in the forebrain and the midbrain, although the dosage applied did not significantly change TAS and TOS levels. Consequently, it was understood that Aroclor 1254 caused damage in the central nervous system of the pup in the prenatal period, and curcumin reduced these negative effects, particularly in the forebrain and the midbrain. CONCLUSION: It was concluded that curcumin could be a potential neuroprotective agent and would be more effective at higher doses.


Assuntos
Encéfalo/efeitos dos fármacos , Curcumina/farmacologia , Efeitos Tardios da Exposição Pré-Natal/prevenção & controle , 8-Hidroxi-2'-Desoxiguanosina , Aldeídos/imunologia , Animais , Antioxidantes/metabolismo , Encéfalo/imunologia , Encéfalo/metabolismo , Desoxiguanosina/análogos & derivados , Desoxiguanosina/imunologia , Feminino , Imuno-Histoquímica , Masculino , Proteína Básica da Mielina/imunologia , Fármacos Neuroprotetores/farmacologia , Oxidantes/metabolismo , Fosfopiruvato Hidratase/metabolismo , Gravidez , Ratos
4.
Turk Neurosurg ; 26(6): 930-936, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-27560531

RESUMO

AIM: The aim of this study was to compare the preventive effects of Etanercept, Etomidate, Erythropoietin and their combination in experimentally induced spinal cord trauma by clinical, histopathological, electrophysiological parameters and biochemical examination. MATERIAL AND METHODS: 85 healthy female Wistar-Albino rats were used in this study. Rats were divided 8 trauma groups that consisted of 10 rats for each, and 5 rats for the sham group. Laminectomy was performed under general anesthesia and the spinal cord was exposed with intact dura mater, and injury was created by the clip compression model. After the spinal cord injury, drugs were administered immediately intraperitoneally or subcutaneously. Except the sham group, all groups received drugs and were observed 24 or 72 hours. At the 72nd hour each group was anesthesized and somatosensorial evoked potentials (SEP) were recorded from the interarcuate ligament from the 2 vertebra proximal to the injured spinal cord and spinal cord tissue samples were taken for histopathological and biochemical evaluation. RESULTS: Etomidate groups showed a lower effect on spinal cord injury than etanercept and erythropoietin in terms of clinical, SEP and TNF-α. Etanercept and erythropoietin's neuroprotective effectiveness was shown alone or in combination treatments. More meaningful results were achieved with the use of erythropoietin and etanercept combination after spinal cord injury (SCI) than using erythropoietin alone. After SCI, highest Basso, Beattie, and Bresnahan (BBB) scores were achieved in the group which Etanercept and Erythropoietin applied together. CONCLUSION: The neuroprotective activity of etomidate was suspect. The neuroprotective effect of etanercept and erythropoietin after SCI was shown in individual and combined applications in this study. However, more experimental studies are needed for clinical use.


Assuntos
Eritropoetina/farmacologia , Etanercepte/farmacologia , Etomidato/farmacologia , Fármacos Neuroprotetores/farmacologia , Traumatismos da Medula Espinal/prevenção & controle , Animais , Modelos Animais de Doenças , Sinergismo Farmacológico , Quimioterapia Combinada , Potenciais Somatossensoriais Evocados/efeitos dos fármacos , Potenciais Somatossensoriais Evocados/fisiologia , Feminino , Ratos , Traumatismos da Medula Espinal/metabolismo , Traumatismos da Medula Espinal/fisiopatologia , Fator de Necrose Tumoral alfa/metabolismo
5.
J Chem Neuroanat ; 75(Pt B): 128-33, 2016 09.
Artigo em Inglês | MEDLINE | ID: mdl-26520616

RESUMO

Adverse health effects of radiofrequency radiation (RFR) on the ongoing developmental stages of children from conception to childhood are scientifically anticipated subject. This study was performed to identify the effects of global system for mobile communications (GSM) modulated mobile phone like RFR in 1800MHz frequency on oxidative DNA damage and lipid peroxidation beside the apoptotic cell formation, using histopathological and immunohistochemical methods in the brain tissue of 1-month-old male and female New Zealand White rabbits that were exposed to these fields at their mother's womb and after the birth. Oxidative DNA damage and lipid peroxidation levels were investigated by measuring the 8-hydroxy-2'-deoxyguanosine (8-OHdG) and malondialdehyde (MDA) levels, respectively. Histopathological changes were observed using by hematoxylin and eosin (HE) staining. Apoptotic cells were detected in the examined organs by terminal deoxynucleotidyl transferase-mediated dUTP nick end-labeling (TUNEL) staining. For both male and female infants; 8-OHdG levels increased in the group exposed to RFR in both intrauterine and extrauterine periods compared to the infants that were never exposed to RFR and the ones were exposed when they reached one month of age (p<0.05). MDA results were different for male and female rabbits. There was no difference between all female infant groups (p>0.05), while only intrauterine exposure significantly causes MDA level increase for the male infants. HE staining revealed mild lessions in neuronal necrobiosis in brain tissues of female rabbits that had only intaruterine exposure and male rabbits had only extrauterine exposure. Gliosis were mildly positive in brain tissues of rabbits that are exposed only intrauterine period, also the group exposed both intrauterine and extrauterine periods. However, there was no apoptotic change detected by TUNEL staining in the brain tissues of all groups.


Assuntos
Apoptose/efeitos da radiação , Encéfalo/patologia , Encéfalo/efeitos da radiação , Efeitos Tardios da Exposição Pré-Natal/etiologia , Efeitos Tardios da Exposição Pré-Natal/patologia , Ondas de Rádio/efeitos adversos , Animais , Animais Recém-Nascidos , Apoptose/fisiologia , Dano ao DNA/fisiologia , Dano ao DNA/efeitos da radiação , Feminino , Peroxidação de Lipídeos/fisiologia , Peroxidação de Lipídeos/efeitos da radiação , Masculino , Estresse Oxidativo/fisiologia , Estresse Oxidativo/efeitos da radiação , Gravidez , Coelhos
6.
J Vet Sci ; 17(2): 225-34, 2016 Jun 30.
Artigo em Inglês | MEDLINE | ID: mdl-26645333

RESUMO

Clinical and magnetic resonance imaging (MRI) findings, histological appearances and surgical outcomes of 18 dogs and one cat with spinal tumors are presented. Medical records of the cases admitted for spinal disorders were reviewed, and cases of spinal tumors that were diagnosed by MRI and confirmed by histological examination were included in this study. T1 weighted, T2 weighted and contrast enhanced T1 weighted images were taken and interpreted to evaluate the spinal tumors. The tumors were diagnosed as: meningioma (n = 6), ependymoma (n = 1), nerve sheath tumor (n = 4), metastatic spinal tumor (n = 3), osteosarcoma (n = 2), osteoma (n = 1), rhabdomyosarcoma (n = 1), and nephroblastoma (n = 1). Thirteen cases underwent surgical operation and the remaining six cases were euthanized at the request of the owners. The neurological status of the surgical cases did not deteriorate, except for one dog that showed ependymoma in the early period after the operation. These results indicate the potential for surgical gross total tumor removal of vertebral tumors to provide better quality of life and surgical collection of histological specimens for definitive diagnosis. For effective case management, dedicated MRI examination is important to accurate evaluation of the spinal tumors, and surgical treatment is useful for extradural and intradural-extramedullary spinal tumors.


Assuntos
Doenças do Gato/diagnóstico , Doenças do Gato/cirurgia , Doenças do Cão/diagnóstico , Doenças do Cão/cirurgia , Neoplasias da Medula Espinal/veterinária , Animais , Gatos , Cães , Feminino , Imageamento por Ressonância Magnética/veterinária , Masculino , Neoplasias da Medula Espinal/diagnóstico por imagem , Neoplasias da Medula Espinal/cirurgia , Resultado do Tratamento
7.
World J Gastroenterol ; 13(23): 3237-44, 2007 Jun 21.
Artigo em Inglês | MEDLINE | ID: mdl-17589904

RESUMO

AIM: To investigate the antifibrotic effects of peginterferon-alpha 2b and taurine on oxidative stress markers and hepatocellular apoptosis. METHODS: Sixty rats with CCl4-induced liver fibrosis were divided into 4 groups (n=15). Group 1 was left for spontaneous recovery (SR). Groups 2-4 received peginterferon-alpha 2b, taurine, and their combination, respectively, for four weeks. Histological fibrosis scores, histomorphometric analysis, tissue hydroxyproline, tissue MDA, GPx and SOD activities were determined. Activated stellate cells and hepatocellular apoptosis were also evaluated. RESULTS: The degree of fibrosis decreased in all treatment groups compared to spontaneous recovery group. Taurine alone and in combination with peginterferon-alpha 2b reduced oxidative stress markers, but peginterferon-alpha 2b alone did not. Apoptotic hepatocytes and activated stellate cells were higher in groups 2-4 than in group 1. Combined taurine and peginterferon-alpha 2b further reduced fibrosis and increased activated stellate cell apoptosis, but could not improve oxidative stress more than taurine alone. CONCLUSION: Peginterferon-alpha 2b exerts anti-fibrotic effects on rat liver fibrosis. It seems ineffective against oxidative stress in vivo. Peginterferon-alpha 2b in combination with taurine seems to be an antifibrotic strategy.


Assuntos
Interferon-alfa/administração & dosagem , Cirrose Hepática Experimental/tratamento farmacológico , Taurina/administração & dosagem , Actinas/análise , Animais , Apoptose , Quimioterapia Combinada , Hepatócitos/patologia , Hidroxiprolina/análise , Interferon alfa-2 , Cirrose Hepática Experimental/metabolismo , Cirrose Hepática Experimental/patologia , Masculino , Óxido Nítrico/biossíntese , Polietilenoglicóis , Ratos , Ratos Sprague-Dawley , Proteínas Recombinantes
8.
Ir Vet J ; 60(1): 30-3, 2007 Jan 01.
Artigo em Inglês | MEDLINE | ID: mdl-21851687

RESUMO

This paper reports on an unusual case of pleural epitheloid mesothelioma in a nine-month-old male, mixed breed dog. The dog was presented in-extremis and, on post mortem examination, multiple, exophytic, frequently pedunculated, yellowish-red, soft to firm masses ranging from 3 mm to 6 cm in diameter were diffusely distributed over, and attached to, the pericardial and parietal pleural surfaces. Microscopically, these masses consisted of round to partially polygonalshaped, anaplastic cells with minimal cytoplasm and hyperchromatic nuclei covering papillomatous projections or as part of more densely cellular masses. A supporting fibrovascular stroma and mitotic figures were also evident. Constituent tumour cells were labeled positively with antibodies against both vimentin and cytokeratin. In contrast, the same cells exhibited equivocal labeling with an antibody directed against calretinin antigen and did not label with antibodies against carcinoembryonic antigen (CEA) and milk fat globule-related antigen (MFGRA). Such tumours are rare in dogs, particularly in such a young animal.

9.
J Am Anim Hosp Assoc ; 42(5): 392-4, 2006.
Artigo em Inglês | MEDLINE | ID: mdl-16960044

RESUMO

Routine ultrasonographic evaluation of the genital organs of a 3-year-old terrier bitch revealed a mass at the level of the left ovary. The mass was located next to the caudal pole of the left kidney and ventrocaudal to the left ovary. Ultrasonographically, the uterus was not enlarged and had no luminal contents. Exploratory laparotomy revealed a mass attached to the left ovarian bursa with a small and thin pedicle. The mass had smooth margins, was whitish in color, and was lobulated on cut surface. The histopathological diagnosis of the mass was leiomyoma associated with the mesosalpinx.


Assuntos
Doenças do Cão/diagnóstico por imagem , Doenças do Cão/patologia , Neoplasias das Tubas Uterinas/veterinária , Tubas Uterinas/patologia , Leiomioma/veterinária , Animais , Doenças do Cão/cirurgia , Cães , Neoplasias das Tubas Uterinas/diagnóstico por imagem , Neoplasias das Tubas Uterinas/patologia , Neoplasias das Tubas Uterinas/cirurgia , Tubas Uterinas/diagnóstico por imagem , Tubas Uterinas/cirurgia , Feminino , Leiomioma/diagnóstico por imagem , Leiomioma/patologia , Leiomioma/cirurgia , Ultrassonografia
10.
Hepatol Res ; 28(4): 207-215, 2004 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-15040961

RESUMO

Oxidative stress is important in pathogenesis of liver fibrosis, which is the result of deposition of excessive ECM proteins produced by activated hepatic stellate cells (HSCs). Reducing reactive oxygen species (ROS) production decreases collagen accumulation in liver. We investigated the benefits of antioxidant therapy in liver fibrosis and its association with HSC apoptosis. Forty-five male Spraque-Dawley rats were subdivided into three groups. Group I was treated with CCl(4) plus taurine, Group II with CCl(4) plus saline, and Group III with saline for 12 weeks. Erythrocyte and liver malondialdehyde (MDA) levels, superoxide dismutase (SOD) activities, Glutathione peroxidase (GSHpx) activities, and serum and liver TIMP-1 and MMP-13 levels were measured. Histopathological examinations were performed. Activated and total HSCs were quantified immunohistochemically. Apoptotic HSCs were detected by terminal deoxynucleotidyl transferase-mediated dUTP nick end-labeling (TUNEL) staining. Taurine decreased histopathological injury scores and oxidative stress parameters significantly. The number of activated HSCs was significantly higher in taurine untreated group ( [Formula: see text] ). Serum and tissue MMP-13 levels were significantly higher and TIMP-1 levels were significantly lower in taurine-treated group ( [Formula: see text] and [Formula: see text], respectively). The number of apoptotic activated hepatic stellate cells was significantly higher with taurine treatment ( [Formula: see text] ). Preventing the production of reactive oxygen species is effective in inhibiting fibrogenesis in experimental rat model. Inhibitory activity of this agent on HSCs' activation, apoptosis, and further fibrogenic events should be clearly identified.

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