Extreme eosinophilia with disseminated eosinophilic granulomatous disease in a horse     

Latimer KS  Bounous DI  Colatos C  Carmichael KP  Howerth EW 《Veterinary clinical pathology / American Society for Veterinary Clinical Pathology》1996,25(1):23-26

Extreme eosinophilia with disseminated eosinophilic granulomatous disease is described in a 4-year-old Arabian mare. Clinical signs included weight loss, coughing, jugular distention, and ventral edema. Cutaneous lesions were not observed. Eosinophilic inflammation was observed in cytologic specimens from the respiratory tract, body cavities, and lymph nodes. At necropsy, a 20-cm diameter intrathoracic mass was observed. Smaller nodules were present in the lymph nodes, liver, spleen, adrenal glands, pancreas, and skeletal muscle. Histologically, these masses and nodules were characterized by infiltrates of eosinophils, macrophages, and multinucleated giant cells, reactive fibroplasia; and multifocal eosinophilic coagula. Microscopically, mild eosinophilic infiltrates were observed in sections of stomach, small intestine, colon, and pleura; however, gross lesions were not observed in these tissues at necropsy. The etiology of the extreme eosinophilia and disseminated eosinophilic granulomatous disease in this horse was not determined.  相似文献   

Idiopathic eosinophilic colitis lesions of the equine small (descending) colon          下载免费PDF全文

M. P. de Bont  A. J. Malbon  R. Blundell  D. C. Archer 《Equine Veterinary Education》2018,30(9):466-471

Five horses with a primary surgical lesion of the small (descending) colon were diagnosed with eosinophilic colitis based on visual and histopathological examination. These were evident as visibly striking, hyperaemic, focal lesions of the small colon, with serosal petechiation, oedema and marked thickening of the intestinal wall at the site. Areas of focal necrosis were also evident. The gross appearance of the lesions were considered to be sufficiently severe in all cases to merit resection, due to concerns about intestinal necrosis and septic peritonitis. An inability to fully exteriorise the affected portion of intestine to perform a resection and anastomosis necessitated intraoperative euthanasia of one horse. A total of three horses survived to hospital discharge. Eosinophilic colitis lesions are a rare cause of severe small colon disease, but should be considered in cases with similar visual characteristics.  相似文献   

Transient bilateral blindness associated with presumptive idiopathic pachymeningitis in a 22-year-old Irish Sport Horse     

T. McGilvray  D. Berner  E. Beltran  C. Attipa  B. Dunkel 《Equine Veterinary Education》2021,33(2):e57-e60

A 22-year-old Irish Sport Horse presented following a period of bilateral blindness with subsequent spontaneous resolution. Brain magnetic resonance imaging (MRI) demonstrated features consistent with pachymeningitis. Cerebrospinal fluid (CSF) analysis revealed increased numbers of basophils, suggestive of an immunologic or neoplastic aetiology. It was suspected that the enlarged meninges led to compression of the optic nerves in the optic canals, causing bilateral blindness. Initial spontaneous remission, as seen in this case, has been reported in human patients with this condition. Pachymeningitis should be considered as a possible cause of cranial nerve deficits, including bilateral and unilateral blindness, in horses.  相似文献   

Chronic eosinophilic granulomatous tenosynovitis in a Quarter Horse mare     

Zoë J. Williams  John McIlmurray  Frank Nickels 《Equine Veterinary Education》2023,35(2):e91-e97

A 5-year-old Quarter Horse mare was presented to the Michigan State University Equine Surgery Service for evaluation of a right hind metatarsophalangeal joint injury. On presentation, the horse was a grade 4/5 lame. Radiographs and ultrasonography showed peritendinous ossification/mineralisation of soft tissue structures and digital flexor tenosynovitis with profound intracapsular mineralisation. A digital flexor tendon sheath tenoscopy was performed with a plantar annular ligament desmotomy and a manica flexoria ligament tenotomy. During surgery, a significant amount of tan granular material was found within the digital tendon sheath. Approximately 80% of this material was removed, and a sample was sent for histopathology. The horse was diagnosed with eosinophilic granulomatous tenosynovitis. Long-term follow-up revealed improvement with four treatments of intralesional triamcinolone given 2–4 weeks apart. The horse became serviceably sound (grade 1/5) and was beginning light work under the saddle approximately 5 months post-tenoscopy.  相似文献   

Resveratrol protects cortical neurons in infant rats with bacterial meningitis through miR-223-3p/NLRP3 pathway     

GAO Meng  HUANG Juan 《园艺学报》2020,36(7):1161-1169

AIM To investigate the protective effect of resveratrol (Res) on cortical neurons in rat bacterial meningitis (BM) model. METHODS Group B hemolytic Streptococcus was injected via the posterior cistern to establish a BM model. Resveratrol was administered intranasally and microRNA-223-3p (miR-223-3p) antagomir was administered by intracerebroventricular injection. HE staining was used to observe the pathological changes of the brain tissue. Loeffler scoring method was used to evaluate the neurobehavioral functions. TUNEL staining was used to detect neuronal apoptosis. The expression of interleukin-1β (IL-1β), IL-18, glial fibrillary acidic protein (GFAP) and ionized calcium-binding adaptor molecule 1 (Iba1) was detected by immunofluorescence staining. The protein levels of nucleotide-binding oligomerization domain-like receptor protein 3 （NLRP3）, cleaved caspase-1, IL-1β and IL-18 were determined by Western blot. The expression level of miR-223-3p was detected by RT-qPCR. Online software TargetScan was used to search for the complementary nucleotide sequences between miR-223-3p and NLRP3 mRNA. RESULTS Compared with sham group, the thickness of meninges in BM model was increased, the neurological score was decreased (P<0.05), and the number of TUNEL positive neurons was increased significantly (P<0.05). Astrocytes and microglia were activated, the fluorescence intensity of IL-1β and IL-18 was increased (P<0.05), and the expression levels of NLRP3, cleaved caspase-1, IL-1β, IL-18 and miR-223-3p were increased (P<0.05). Compared with BM group, after treatment with resveratrol, the neurological score was increased (P<0.05), the number of TUNEL positive neurons was decreased significantly (P<0.05), and the inflammatory response of astrocytes and microglia was suppressed. The fluorescence intensity of IL-1β and IL-18 was decreased (P<0.05), the protein levels of NLRP3, cleaved caspase-1, IL-1β and IL-18 were decreased (P<0.05), and the expression level of miR-223-3p was increased (P<0.05). A nucleotide sequence in the 3'-UTR of NLRP3 mRNA might be targeted by miR-223-3p. In the brain of rat BM model, compared with antagomir control group, the expression of NLRP3 was increased in miR-223-3p antagomir group with resveratrol treatment (P<0.05). CONCLUSION Resveratrol may reduce the inflammatory death of cortical neurons in BM model of infant rats through miR-223-3p/NLRP3 pathway, thus playing a protective role for the neurons.  相似文献   

Research Advances in Escherichia coli K1 Penetration Across Blood-brain Barrier     

LING Chen  ZHANG Qi-wen  SONG Kang  JIANG Jian-jun  YAN Gen-qiang 《中国畜牧兽医》2017,44(3):686-691

E.coli K1 strain is a representative strain of neonatal sepsis and meningitis, which causes disease by blood circulation to the brain. The molecular mechanism of E.coli K1 that adhering and invading the brain microvascular endothelial cells (BMECs) and cross the blood brain barrier (BBB) has been focused on by many scholars. In this review, we focused on the gene regulation mechanisms and signaling pathway of E.coli K1 crossing the blood brain barrier to understand the molecular mechanism of the infection caused by E.coli and provide reference for prevention and treatment programs.  相似文献   

Cutaneous reactivity to mosquito bites and its antigens in cats     

MASAHIKO NAGATA ‡  TAKUO ISHIDA† 《Veterinary dermatology》1997,8(1):19-26

Abstract This study describes 26 cats with mosquito bite hypersensitivity. Most were short-haired, free-roaming cats. Typical clinical features were seasonal (summer), symmetric miliary dermatitis on the pinnae. Mosquito bite exposure with Aedes albopictus was performed on the pinnae and the lateral thorax in five cases and three healthy cats. All sites showed weals within 20 min. Papules, which revealed eosinophilic dermatitis, were recognized during a 12–48-h period. The control cats showed only slight and transient erythema after being bitten. Intradermal skin tests with an extract of A. albopictus were performed in three cases, and Prausnitz-Küstner tests under A. albopictus bites were performed in three cases. Both tests showed weals in all cases studied, although papules were not observed. Intradermal skin tests with the control cats, and Prausnitz-Küstner tests with saline and healthy cat serum failed to produce any positive reactions. The findings indicate that mosquito bite hypersensitivity in cats is triggered by a type I hypersensitivity reaction to mosquito antigens. Certain other factors may be involved in the formation of delayed papular reactions. Whether this is a normal or abnormal reaction to mosquito bites is also discussed. Résumé— Cette étude a été réalisée sur 26 chats atteints d'hypersensibilité aux piqûres de moustiques. La plupart des chats sont des chats à poils courts vivant à l'extérieur. Les lésions cliniques sont caractérisées par une dermatite miliaire symétrique sur les pavilions auriculaires survenant l'été. Une exposition aux piqûres de moustique (Aedes albopictus) a été réalisée sur les pavilions auriculaires et sur la face latérale du thorax de 5 chats atteints et de 3 chats sains. Tous les sites d'exposition montrent des reactions à 20 minutes. Ces papules qui traduisent une dermite éosinophilique, persistent pendant 12 à 48 heures. Les chats sains ne montrent qu'un érythème transitoire après la piqûre, des tests d'intradermoréaction avec un extrait d'A. albopictus ont été réalisés dans 3 cas, des tests de Prausnitz-Küstner spécifiques dans 3 cas. Les deux tests montrent des reactions dans tous les cas étudiés bien que des papules ne soient pas observées. Ces tests réalisés sur les chats témoins, ne montrent aucune reaction, positive ou significative. Ces résultats suggèrent que l'hypersensibilité aux piqûres de moustiques chez le chat est regie par une hypersensibilité de type I à divers antigènes de moustique. D'autres facteurs doivent intervenir dans la formation des reactions papuleuses retardées. [Mashiko N, Takuo I. Cutaneous reactivity to mosquito bites and its antigens in cats. (Réactivité cutanée aux piqûres de moustiques et à leurs antigènes chez le chat.) Veterinary Dermatology 1997; 8 : 19–26.] Résumén Este estudio describe 26 gatos con hipersensibilidad a la picadura de mosquito. La mayoria eran gatos en régimen abierto de pelo corto. Las caracteristicas clinicas tipicas fueron dermatitis miliar simétrica estacional (verano) en pabellones auriculares. Se llevó a cabo una exposición a la picadura del mosquito Aedes albopictus en los pabellones y en el tórax lateral en 5 casos y 3 gatos sanos. Todas las zonas mostraron ronchas a los 20 minutos. Aparecieron pápulas con dermatitis eosinofilica a las 12 a 48 horas. Los gatos control mostraron solamente eritema leve y transitorio tras la picadura. Se realizaron pruebas cutáneas intradérmicas con extracto de A. albopictus en 3 casos y pruebas de Prausnitz-Küstner bajo picaduras de A. albopictus en 3 casos. Ambas pruebas mostraron ronchas en todos los casos estudíados, aunque no se observaron pápulas. Las pruebas intracutáneas con los gatos control y las pruebas de Prausnitz-Küstner con suero salino y suero de gatos sanos no causaron reacción positiva. Estos hallazgos indican que la hipersensibilidad a la picadura de mosquito se inicia por una hipersensibilidad de tipo I a antigenos del mosquito. Otros factores pueden estar implicados en la formación de reacciones papulares retardadas. Se discute si esta es una reacción normal o anormal a la picadura de mosquito. [Mashiko N, Takuo I. Cutaneous reactivity to mosquito bites and its antigens in cats. (Reactividad cutanea a las picaduras de mosquito y sus antigenos en el gato.) Veterinary Dermatology 1997; 8 : 19–26.] Zusammenfassung— Diese Studie beschreibt 26 Katzen mit Mückenstichhypersensibilität. Die meisten der Tiere waren kurzhaarig und hatten Freilauf. Die typischen klinischen Bilder bestanden in säsonaler (Sommer), symmetrischer miliarer Dermatitis an den Ohrmuschein. Es wurde eine Exposition auf Mückenstiche mit Aedes albopictus an den Ohrmischein und am lateralen Thorax bei 5 Patienten und 3 gesunden Katzen durchgeführt. Alle Stellen zeigten Quaddeln innerhalb von 20 Minuten. Papeln, die eine eosinophile Dermatitis enthüllten, wurden nach einer Zeitspanne von 12 bis 48 Stunden gesehen. Die Kontrollkatzen zeigten ein nur leichtes und transientes Erythem nach dem Biß. Intradermale Hauttests mit einem Extrakt von A. albopictus wurden in 3 Fallen durchgeführt und Prausnitz-Küstner-Tests unter A. albopictus-Bissen wurden in 3 Fallen durchgeführt. Beide Tests zeigten Quaddeln in alien untersuchten Fallen, obwohl Papeln nicht beobachtet wurden. In den intradermalen Hauttests bei den Kontrollkatzen und Prausnitz-Küstner-Tests mit Kochsalz-Lösung und Serum gesunder Katzen gelang es nicht, irgendweiche positiven Reaktionen zu erzeugen. Diese Befunde zeigen, daß Mückenstichhypersensibilität bei Katzen durch eine Typ 1-Hypersensibilitätsreaktion auf Mückenantigene ausgelöst wird. Bestimmte andere Faktoren können in die Bildung von verzögerten papulären Reaktionen miteinbezogen sein. Ob dies eine normale oder unnormale Reaktion auf Mückenstiche ist, wird ebenfalls diskutiert. [Mashiko N, Takuo I. Cutaneous reactivity to mosquito bites and its antigens in cats. (Hautreaktivität auf Mückenstiche und Antigene bei der Katze.) Veterinary Dermatology 1997; 8 : 19–26.]  相似文献   

实验性水貂细小病毒性肠炎的病理形态学研究     

陈华  倪汝选 《中国兽医学报》1990,(4)

健康水貂6只,3只作对照,另3只口服-20℃保存9个月的水貂细小病毒性肠炎粪毒。实验貂临床症状典型,小肠粘膜出现“气球样”上皮细胞,肠腺和绒毛上皮细胞广泛变性、坏死、脱落,胞浆内可见嗜酸性小体;胞核可见两种类型Cowdry A型包涵体;在肠系膜淋巴结、骨髓、脾和肾上腺也观察到了核内包涵体。在小肠绒毛上皮细胞膜上和肠腺腺腔中发现大量G-小杆菌。同时,用扫描电镜观察了各肠段粘膜表面的变化;用透射电镜研究了空肠前段粘膜上皮细胞中水貂细小病毒(MPV)的形态发生及其所引起的超微病变,发现核仁及其相随染色质参与了核内包涵体的形成。  相似文献   

硬骨鱼肥大细胞的研究进展   总被引：2，自引：0，他引：2       下载免费PDF全文

许乐仁  江萍  高登慧  杨筱珍 《中国水产科学》2003,10(5):425-430

有关肥大细胞，在某些啮齿动物及人类中研究已比较深入，但在鱼类及其他低等脊椎动物中研究较少。硬骨鱼(teleostean fish)肥大细胞(MC)，常被称为嗜酸性颗粒细胞(EGC)，或肥大细胞／嗜酸性颗粒细胞(MC／EGC)，本文对有关研究进展作一综述并对硬骨鱼肥大细胞的发生、组织化学性质、细胞颗粒介质及其在鱼类健康与疾病中可能的功能意义等进行讨论，旨为深入研究鱼类重大疫病的发生机理提供基础依据。  相似文献   

Disseminated protothecosis diagnosed by evaluation of CSF in a dog     

Lane LV  Meinkoth JH  Brunker J  Smith SK  Snider TA  Thomas J  Bradway D  Love BC 《Veterinary clinical pathology / American Society for Veterinary Clinical Pathology》2012,41(1):147-152

A 5-year-old female spayed Shetland Sheepdog Mix dog was evaluated for a history of recent seizure activity, progressive hind limb ataxia, polyuria, and polydipsia and no history of gastrointestinal signs. Physical examination findings included conscious proprioceptive deficits, ataxia, and anterior uveitis along with a hypermature cataract in the right eye. Results of a CBC, serum biochemical profile, urinalysis, and computed tomography scan of the brain were unremarkable. Cerebrospinal fluid (CSF) analysis revealed marked eosinophilic pleocytosis and rare organisms consistent with Prototheca spp within neutrophils and macrophages. On postmortem histologic examination, mononuclear inflammation and numerous intralesional algal organisms, similar to those seen on the cytologic preparation of CSF, were found in the brain, eyes, kidneys, and heart. Abnormalities were not detected on gross and histologic examination of the gastrointestinal tract. Cultures of CSF and subdural/olfactory bulb, but not intestinal tract, yielded growth of Prototheca spp, and PCR analysis and DNA sequencing confirmed the organism as Prototheca zopfii genotype 2. We have reported a rare case of disseminated protothecosis that was diagnosed by evaluation of CSF in a dog presented with neurologic signs and no overt enteric disease. Protothecosis should be considered as a rare cause of seizures, even in the absence of obvious enteric signs, and should be included in the differential diagnosis of eosinophilic pleocytosis.  相似文献