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莱姆病是由伯氏疏螺旋体引起的一种蜱传性人兽共患传染病。1977年美国医生A．C Sleere发现康涅狄格州莱姆镇流行的青少年关节炎是一种独立的疾病,并称为莱姆关节炎。1982年,昆虫学家Willy Burgdorfer从采自疫区的达敏硬蜱中发现和分离出莱姆病疏螺旋体。1984年Johnson根据其基因型和表型特征,认为该螺旋体是一个新种,命名为伯格多弗疏螺旋体。 相似文献
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莱姆病是由伯氏疏螺旋体引起的一种蜱传性人兽共患传染病。1977年美国医生A．C Sleere发现康涅狄格州莱姆镇流行的青少年关节炎是一种独立的疾病,并称为莱姆关节炎。1982年,昆虫学家Willy Burgdorfer从采自疫区的达敏硬蜱中发现和分离出莱姆病疏螺旋体。1984年Johnson根据其基因型和表型特征,认为该螺旋体是一个新种,命名为伯格多弗疏螺旋体。 相似文献
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荧光定量PCR检测硬蜱体内莱姆病螺旋体的研究 总被引：1，自引：1，他引：0
为建立一个荧光定量PCR检测硬蜱体内莱姆病螺旋体的方法,根据GenBank登录的莱姆病螺旋体鞭毛蛋白FlaB序列,应用生物学软件进行序列比对,在保守的C段区设计与筛选特异引物和TaqMan探针。对荧光定量PCR反应体系与条件进行优化,验证方法的特异性、敏感性,并通过对感染螺旋体的蜱样本的检测,评价该方法的实用价值。结果显示,自然感染莱姆病螺旋体的35份蜱标本检测阳性符合率100%,正常蜱20份标本的检测结果均为阴性。该方法对牛巴贝斯原虫、泰勒原虫、边缘无浆体、金龟子绿僵菌、大肠杆菌等蜱体常见病原微生物所抽提的DNA的检测均呈阴性。荧光定量PCR方法检测质粒的灵敏度可达1×102拷贝/μL。TaqMan荧光定量PCR方法检测硬蜱体内莱姆病螺旋体具有较好的敏感性和特异性,可适于莱姆病的流行病学调查和监控。 相似文献
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为了解莱姆病螺旋体在蜱体内的发育生物学，采用直接免疫荧光试验、银染色法组织学及电子显微镜观察螺旋体，结果显示，感染莱姆病螺旋体的饥饿蓖子硬蜱雌虫未吸血与吸血0．5和1天唾腺中无螺旋体。在吸血开始后2天出现唾腺的轻度感染，3天出现唾腺的中度感染，4天和5天出现重度感染。这些结果表明，莱姆病螺旋体媒介蜱唾腺的感染程度随吸血时间的延长而迅速增高，并可在缓慢吸血期的中后期形成重度感染。莱姆病螺旋体在吸血期媒介唾腺内的大量存在，特别是重度感染的发现，为该病原螺旋体由蟀向脊椎动物宿主传播的唾液分泌途径假设提供了有力证据。本研究对莱姆病螺旋体在吸血蟀唾腺内分裂增殖的可能性进行了讨论。 相似文献
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莱姆病（ｌｙｍｅ ｄｉｓｅａｓｅ）是一种新发现的人兽共患病。病原体为伯氏疏螺旋体（Ｂｏｒｒｉｌｉａ ｂｕｒｇｄｏｒｆｅｒｉ），通常以硬蜱为传播媒介。在人和动物中广泛流行，属自然疫源性疾病。本文就莱姆病的病原、流行概况、传播媒介及动物感染、流行特点、临床症状、诊断、治疗及防制措施作了概述。１９７５年．Ｓｔｅｅｒｓ在美国康涅狄格州莱姆镇发现了一种儿童中罹患的特殊的关节炎．由于最初在莱姆镇发现，故名莱姆病［１］．１９８２年，Ｂｕｒｇｄｏｒｆｅｒｉ和Ｂａｒｂｏｕｒ从硬蜱体内分离出一株新的疏螺旋体，并证实为莱姆病的病原体［２］。此后，通过深入的调查和研究．发现该螺旋体对人不仅可引起关节炎症状，而且可致心脏、神经系统等一系列严重的全身症状。对动物可引起发热、跛行、神经机能障碍、流产、死胎等病症。莱姆病在世界各地均有发生，其存在的广泛性、复杂性和严重性引起了各国的极大关注。近年来，人莱姆病的研究进展很快，取得了显著的成就。动物莱姆病的研究也已广泛展开，且不断深入进行。莱姆病的研究已经成为人兽共患病的主要内容和重要课题。 相似文献
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1兔疏螺旋体病
疏螺旋体病亦称莱姆病,是由经蜱传播的伯氏疏螺旋体引起的一种自然疫源性人畜共患传染病。本病以叮咬性皮损、发热、心肌炎、脑炎和关节肿胀疼痛为特征。 相似文献
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莱姆病是由伯氏疏螺旋体引起的一种蜱传性人兽共患传染病.1977年美国医生A.C Sleere发现康涅狄格州莱姆镇流行的青少年关节炎是一种独立的疾病,并称为莱姆关节炎.1982年,昆虫学家Willy Burgdorfer从采自疫区的达敏硬蜱中发现和分离出莱姆病疏螺旋体. 相似文献
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伯氏疏螺旋体是莱姆病的病原体,伯氏疏螺旋体基因型与临床表现、地理环境、媒介物种、宿主动物等有密切关系。目前伯氏疏螺旋体分型方法主要有血清学分型和分子生物学分型。本文主要对伯氏疏螺旋体的国内外分型技术进行了综述。 相似文献
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莱姆病诊断技术研究进展 总被引：1，自引：0，他引：1
莱姆病是一种经硬蜱传播的新发人畜共患病,可引起人类的慢性游走性红斑及心脏、神经、关节等多系统受损的疾病,造成病人不同程度的活动障碍和肢体瘫痪。该病在世界范围内广泛分布,我国许多地区是该病的自然疫源地。因此,莱姆病越来越引起人们的重视。伯氏疏螺旋体是引起莱姆病的病原体,因其培养周期长、抗原结构复杂给莱姆病的诊断带来了一定的困难。本文对莱姆病病原体的直接检测、免疫学检测、分子生物学检测和一些新的诊断技术进行了概述。 相似文献
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ACVIM small animal consensus statement on Lyme disease in dogs: diagnosis, treatment, and prevention
Littman MP Goldstein RE Labato MA Lappin MR Moore GE 《Journal of veterinary internal medicine / American College of Veterinary Internal Medicine》2006,20(2):422-434
The purpose of this report is to offer a consensus opinion of ACVIM diplomates on the diagnosis, treatment, and prevention of Borrelia burgdorferi infections in dogs (canine Lyme disease). Clinical syndromes known to commonly be associated with canine Lyme disease include polyarthritis and glomerulopathy. Serological test results can be used to document exposure to B. burgdorferi but not prove illness. Although serum enzyme-linked immunosorbent assay/indirect fluorescent antibody assay titers can stay positive for months to years after treatment, quantitative C6 peptide antibody paired tests need more study. Serological screening of healthy dogs is controversial because it can lead to overdiagnosis or overtreatment of normal dogs, most of which never develop Lyme disease. However, serological screening can provide seroprevalence and sentinel data and stimulate owner education about tick infections and control. Although it is unknown whether treatment of seropositive healthy dogs is beneficial, the consensus is that seropositive dogs should be evaluated for proteinuria and other coinfections and tick control prescribed. Tick control can include a product that repels or protects against tick attachment, thereby helping to prevent transmission of coinfections as well as Borrelia spp. Seropositive dogs with clinical abnormalities thought to arise from Lyme disease generally are treated with doxycycline (10 mg/kg q24h for 1 month). Proteinuric dogs might need longer treatment as well as medications and diets for protein-losing nephropathy. The ACVIM diplomates believe the use of Lyme vaccines still is controversial and most do not administer them. It is the consensus opinion that additional research is needed to study predictors of illness, "Lyme nephropathy," and coinfections in Lyme endemic areas. 相似文献
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Complete Heart Block in a Dog Seropositive for Borrelia burgdorferi: Similarity to Human Lyme Carditis 总被引：4，自引：0，他引：4
Steven A. Levy VMD Paul Harrison Duray MD 《Journal of veterinary internal medicine / American College of Veterinary Internal Medicine》1988,2(3):138-144
Lyme disease has been recognized in humans since 1975 when it was associated with an outbreak of oligoarthritis in children in Lyme, Connecticut. Erythema chronicum migrans (ECM) is a clinical marker for the human disease, which usually appears within 3 to 32 days after an infected tick bite. Lyme disease is caused by spirochete, Borrelia burgdorferi, which is vectored by the hard ticks Ixodes dammini or Ixodes pacificus in the United States. In humans, Lyme disease has been found to cause a variety of clinical syndromes including cardiopathy, neuropathy, dermatopathy, and arthropathy. Human Lyme carditis is characterized by varying degrees of atrioventricular (AV) heart block that usually resolve regardless of therapy. Lyme disease has been reported in the dog as an arthropathy. This article reports a case of complete heart block and myocarditis in a dog with a positive titer for B burgdorferi, in which clinical and pathologic findings were similar to those seen in human Lyme myocarditis. 相似文献
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Borrelia burgdorferi infection in horses is common in some areas of North America, but the incidence of clinical disease has not been determined, which makes Lyme disease controversial in the horse. Progress is being made case by case in defining the several clinical presentations of Lyme disease in adult horses. Current serologic tests are very sensitive and specific for detecting either infection (previous or concurrent) or exposure but may not distinguish between them. Treatment protocols are available for Lyme disease in horses; however, the ability of those protocols to eliminate the organism remains questionable. Currently, minocycline is being attempted in some presumed Lyme cases as an improved alternative to doxycycline and oxytetracycline. Vaccination, like many aspects of Lyme disease, remains controversial, although the canine-approved vaccines have the potential to prevent infection based upon vaccine studies in ponies and other animals. 相似文献
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《Journal of Equine Veterinary Science》2001,21(5):229-234
Equine Lyme disease is difficult to diagnose because of its nonspecific clinical signs and the high incidence of subclinical infection in endemic regions. In this study we compared serology, antigen presence, hematology, blood chemistries and clinical presentation of 22 horses from a highly endemic region that were clinically diagnosed with Lyme disease to that of 21 clinically normal horses from the same region. We found that horses clinically diagnosed with Lyme disease were more likely to have Borrelia burgdorferi spirochetal DNA in their blood and urine, have a higher percentage of positive immunoblots containing antibodies to certain B. burgdorferi proteins, and tend to have higher ELISA titers than healthy horses from the same region. These results may help to improve diagnostic testing for equine Lyme disease. 相似文献
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Meryl P Littman 《Veterinary Clinics of North America: Small Animal Practice》2003,33(4):827-862
A guild of organisms carried by the same vector (Ixodes ticks) in Lyme-endemic areas may be confounding the understanding of Lyme disease in dogs. A new diagnostic method, the C6 peptide test for Lyme, and serology and PCR testing for Ehrlichia, Babesia, and Bartonella species will help to sort out seroprevalence and symptomatology caused by exposure to these agents or by coinfections. In addition, Rickettsia, Leptospira, Mycoplasma species, and more could be involved in dogs diagnosed with a "doxycycline-responsive" disease. The author does not recommend treating asymptomatic Borrelia carrier dogs, but does recommend screening them for proteinuria and for exposure to other agents. A positive Lyme titer is a marker of exposure to Ixodes ticks and the agents they carry. The risk/benefit of vaccination will be understood better as the symptomatology and immunopathogenesis of Lyme disease are defined. Meanwhile, tick control is highly recommended for all dogs in Lyme-endemic areas. 相似文献
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C. May S. D. Cartert† A. Barnes † S. Bell D. Bennett 《The Journal of small animal practice》1991,32(4):170-174
Lyme disease is a chronic, multisystemic, inflammatory disorder of man and animals associated with infection by the tick-borne spirochaete, Borrelia burgdorferi. Lyme disease was recently reported for the first time in a dog in the UK (May and others 1990). Using an enzyme-linked immunosorbent assay (ELISA), we have performed a serological survey to investigate the prevalence of antibodies to B burgdorferi in UK dogs. The survey has shown that dogs from many areas in the UK have serum antibodies to B burgdorferi, that the presence of serum antibodies is associated with known exposure to ticks and that some dogs seropositive for B burgdorferi have clinical signs consistent with Lyme disease. High levels of serum anti-Borrelia antibodies are not diagnostic for canine Lyme disease, but, in association with appropriate clinical signs, they help to confirm the diagnosis in suspected cases. 相似文献
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Heather L. Priest Nita L. Irby Donald H. Schlafer Thomas J. Divers Bettina Wagner Amy L. Glaser Yung‐Fu Chang Mary C. Smith 《Veterinary ophthalmology》2012,15(6):398-405
Borrelia burgdorferi, the etiologic agent of Lyme disease is a tick born spirochetal infection. Clinical signs of Lyme borreliosis are uncommon in horses, but when present they are often vague and nonspecific. In horses, Lyme borreliosis has been implicated in musculoskeletal, neurological, reproductive, and ocular disorders, including uveitis, but definitive diagnosis can be challenging as the causative agent is rarely isolated and serologic tests can be unreliable and do not confirm active disease. Here, we report two cases of equine uveitis associated with B. burgdorferi based on the identification of spirochetes within ocular fluids and confirmed with PCR testing. The two cases illustrate some of the challenges encountered in the recognition and diagnosis of equine Lyme borreliosis. Although only one of many possible causes of equine uveitis, Lyme disease should be considered a differential diagnosis, especially in endemic areas. Given the possibility for false negative results of serum tests during uveitis associated with B. burgdorferi and the failure of such tests to confirm active infection, a combination of cytologic assessment, antibody, and/or PCR testing of ocular fluids may be worthwhile if the clinical suspicion for Lyme uveitis is high. 相似文献
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This review discusses the literature on B. burgdorferi infections in view of the rising incidence of this infection in general and the increasing concerns of horse owners and equine practitioners. Lyme disease, the clinical expression of Borrelia infections in man is an important health problem. The geographic distribution of B. burgdorferi infections in equidae should resemble that of human cases because the vector tick involved, Ixodes ricinus, feeds on both species and, indeed, the infection has been established many times in horses. However, a definite diagnosis of the disease "Lyme borreliosis" in human beings as well as in horses and other animals is often difficult to accomplish. Although a broad spectrum of clinical signs has been attributed to B. burgdorferi infections in horses, indisputable cases of equine Lyme borreliosis are extremely rare so far, if they exist at all. 相似文献