共查询到20条相似文献，搜索用时 312 毫秒
1.
2.
3.
4.
桂林老虎猫瘟热病毒的分离鉴定 总被引：5，自引：0，他引：5
我们在作猫细小病毒分子流行病学调查过程中,从桂林送棼的考虑粪便中分离出１株虎细小病毒,并对其进行了系统鉴定,经形态学理化学血清学交叉中和试验、动物感染试验与分子生物学,证明为一株猫瘟热病毒（猫泛白细胞减少症病毒）的强毒。 相似文献
5.
6.
猫免疫缺陷病毒（Feline immunodeficiency virus，FIV）是一种主要感染猫的反转录病毒。FIV与人的免疫缺陷病毒（Human immunodeficiency virus，HIV）有许多相似性，可作为HIV的研究模型，如测量FIV病毒在动物体内的感染曲线，可为了解HIV在人体内的传播细节提供蓝图；利用FIV偏好感染发展中的神经系，可以帮助人们了解艾滋病（Acquired immure deficiency syndrome，AIDS）对神经系统的致病机理。FIV疫苗的研究获得成功，可为HIV疫苗的研制提供提示。FIV在基因治疗方面有重要的应用价值，目前应用FIV传递CFTR（cystic fibrosis transmembrane conductance regulator）的cDNA到呼吸系统表皮细胞治疗囊肿性纤维化（cysticfibrosis，CF）的研究已经取得了很大进展。 相似文献
7.
8.
9.
10.
为对疑似感染猫细小病毒的非洲狮进行确诊，了解猫细小病毒的流行特点，通过猫肾细胞（F81细胞）对非洲狮粪便样品进行病毒分离并通过PCR鉴定，对检测到的细小病毒进行VP2基因扩增和分析。结果显示：成功从非洲狮粪便中分离出1株细小病毒，将其命名为FPV CHN-HN-1。该病毒接种到F81细胞上，能使细胞出现拉丝、脱落现象。该分离株与参考的26株细小病毒分离株相似性为97.8%~100%，其中与分离株JN-FPV-96（MZ836373.1）、TZ-FPV-112（MZ836368.1）、FPV-SH2003（MW811187.1）和BJ051（MT270580.1）相似性高达100%；与其他7株猫源细小病毒同属一个分支，与JN-FPV-96、TZ-FPV-112、FPV-SH2003、BJ051遗传距离最近，与其他参考毒株遗传距离较远。本研究为细小病毒病的诊断和治疗提供了依据，也为后期疫苗的研制打下了基础。 相似文献
11.
Characterisation of lymphosarcomas in Australian cats using polymerase chain reaction and immunohistochemical examination 总被引：1，自引：0，他引：1
Objective To examine tumour tissue of cats with lymphosarcoma for the presence of feline leukaemia virus and feline immunodeficiency virus and analyse the immunophenotype of the tumours.
Design A retrospective study of feline lymphosarcoma cases.
Methods Formalin-fixed, paraffin-embedded tumour tissue of 14 feline lymphosarcomas was examined for the presence of feline leukaemia virus and feline immunodeficiency virus by polymerase chain reaction and immunohistochemistry. Using polyclonal and monoclonal antibodies against T and B lymphocytes, the phenotypic expression of the tumours was characterised.
Results No feline leukaemia virus antigen or proviral sequences were detected. Feline immunodeficiency virus proviral sequences were detected in two cases by polymerase chain reaction. Immunophenotyping of all 14 cases resulted in seven cases being classified as B-cell phenotype, four as T-cell phenotype, and the remaining three undetermined.
Conclusions In contrast to previous reports overseas, our results suggest that feline leukaemia virus infection appears to be an infrequent cause of lymphosarcoma in the cats that were necropsied. Feline immunodeficiency virus may have a role in lymphomagenesis. The potential role of feline immunodeficiency virus needs to be explored in more depth. Compared with most previous reports, B-cell tumours were more common than T-cell tumours in this series of cats. 相似文献
Design A retrospective study of feline lymphosarcoma cases.
Methods Formalin-fixed, paraffin-embedded tumour tissue of 14 feline lymphosarcomas was examined for the presence of feline leukaemia virus and feline immunodeficiency virus by polymerase chain reaction and immunohistochemistry. Using polyclonal and monoclonal antibodies against T and B lymphocytes, the phenotypic expression of the tumours was characterised.
Results No feline leukaemia virus antigen or proviral sequences were detected. Feline immunodeficiency virus proviral sequences were detected in two cases by polymerase chain reaction. Immunophenotyping of all 14 cases resulted in seven cases being classified as B-cell phenotype, four as T-cell phenotype, and the remaining three undetermined.
Conclusions In contrast to previous reports overseas, our results suggest that feline leukaemia virus infection appears to be an infrequent cause of lymphosarcoma in the cats that were necropsied. Feline immunodeficiency virus may have a role in lymphomagenesis. The potential role of feline immunodeficiency virus needs to be explored in more depth. Compared with most previous reports, B-cell tumours were more common than T-cell tumours in this series of cats. 相似文献
12.
We used unbiased next-generation sequencing (NGS) to detect unknown viruses in cats. Serum or plasma samples were obtained from clinically ill cats with suspected acute viral infections. Nucleic acid was extracted from serum or plasma samples to construct a complementary DNA library for NGS. Comprehensive nucleotide sequencing analyses enabled detection of the genomes of various viruses, including the severe fever with thrombocytopenia syndrome virus, feline immunodeficiency virus, feline morbillivirus, parvovirus, and Torque teno felis virus. Our findings indicate that comprehensive nucleotide analyses of serum or plasma samples can be used to detect infections with unknown viruses in cats. 相似文献
13.
Prevalences of feline leukaemia virus and feline immunodeficiency virus infections in cats in Sydney 总被引：3，自引：0，他引：3
R. MALIK K. KENDALL J. CRIDLAND S. COULSTON AJ STUART D. SNOW DN LOVE 《Australian veterinary journal》1997,75(5):323-327
Objective To determine prevalences of feline leukaemia virus (FeLV) and feline immunodeficiency virus (FIV) infections in ‘healthy’ cats that, through acute misadventure or other circumstance, were presented to veterinary practitioners. Prevalences of FeLV and FIV in this population were compared to those in a population of predominantly sick cats. Design and procedures Serum specimens were obtained over a 2-year period from 200 cats oldeer than 1 year of age presented to veterinary clinics for routine procedures, including cat fight injuries or abscesses, vehicular trauma, neutering, dental scaling, vaccination, grooming or boarding. An additional 894 sera were obtained over approximately the same period from specimens submitted by veterinarians to a private clinical pathology laboratory, mainly from sick cats suspected of having immune dysfunction, but including some sera from healthy cats being screened prior to FeLV vaccination. FIV antibody and FeLV antigen were detected in samples using commercial enzyme immunoassays. Results Amongst 200 ‘healthy’ cats, the prevalence of FeLV infection was 0 to 2%, and the prevalence of FIV was 6.5 to 7.5%, depending on the stringency of the criteria used to define positivity. FIV infection was significantly more prevalent in cats which resided in an inner city environment (P = 0.013). Of the 894 serum specimens submitted to the laboratory by practitioners, 11/761 (1.4%) were FeLV positive, while 148/711 (20.8%) were FIV positive. The prevalence of FIV was significantly higher in these predominantly ‘sick’ cats than in cats seen for routine veterinary procedures (P < 0.00001), while there was no difference in the prevalence of FeLV (P = 0.75) Conclusions The prevalence of FeLV and FIV in healthy cats may have been substantially overestimated in some previous Australian surveys. FeLV infection would appear to be a rare cause of disease in Australian cats. The higher prevalence of FIV positivity in sick as opposed to healthy cats infers that FIV infection contributes to the development of disease. 相似文献
14.
15.
Abstract
AIMS
To estimate the prevalence of cats testing positive for antibodies to feline immunodeficiency virus (FIV) and feline leukaemia virus (FeLV) antigens in domestic cats entering a New Zealand animal shelter, based on a commercial point-of-care ELISA, to identify risk factors associated with cats testing positive, and to compare the results obtained from the ELISA with those obtained using PCR-based testing. 相似文献16.
K Kida T Hohdatsu K Fujii H Koyama 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》1999,61(8):935-938
The type II feline infectious peritonitis virus (FIPV) epitopes for neutralizing and enhancing antibodies are present on large spike glycoprotein (S) protein. In this study, we established monoclonal antibody-resistant mutant viruses resistant to three different monoclonal antibodies with neutralizing activity in Felis catus whole fetus cells and enhancing activity in feline macrophages, recognizing distinct epitopes on type II FIPV S protein. By comparing the nucleotide sequences of these mutant viruses with that of wild-type virus, we attempted to identify the neutralizing epitopes. The mutations were localized in the region of amino acid residues from 480 to 649 from the N terminal of the S protein. 相似文献
17.
18.
19.
Since feline immunodeficiency virus (FIV) was first isolated, international research efforts have been directed towards developing a protective vaccine, not least because it may provide a model for a candidate human immunodeficiency virus (HIV) vaccine. This article reviews the challenges facing vaccine development, the current state of knowledge and future prospects for FIV vaccination. 相似文献
20.
Three feline hemoplasma species exist in felids: Mycoplasma haemofelis, ‘Candidatus Mycoplasma haemominutum’, and ‘Candidatus Mycoplasma turicensis’.The aims of the study were to determine the presence of, and molecularly characterize, any hemoplasmas in wild felids, including the endangered Persian leopard in Iran, the Middle East.Blood samples were collected from 19 wild felids, including three Persian leopards. Using species-specific hemoplasma PCRs and ELISA serological testing for feline leukaemia virus and feline immunodeficiency virus (FIV), two Persian leopards were found to be infected with ‘Ca. M. haemominutum’ and were seropositive for FIV. Partial 16S rRNA gene sequences were generated for these ‘Ca. M. haemominutum’ species and subsequent phylogenetic analysis revealed 97.70% to 99.45% sequence identity with those found in domestic cats from Iran and other countries.This study confirms the presence of ‘Ca. M. haemominutum’ and concurrent FIV antibody in wild felids in Iran. This represents the first report of hemoplasma in wild felids in the Middle East as well as the first report of infection in Persian leopards. 相似文献