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leptospira in dogs

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https://www.readbyqxmd.com/read/28803792/rapid-and-visual-detection-of-leptospira-in-urine-by-ligb-lamp-assay-with-pre-addition-of-dye
#1
Syed Atif Ali, Gurpreet Kaur, Nongthombam Boby, T Sabarinath, Khushal Solanki, Dheeraj Pal, Pallab Chaudhuri
Leptospirosis is considered to be the most widespread zoonotic disease caused by pathogenic species of Leptospira. The present study reports a novel set of primers targeting LigB gene for visual detection of pathogenic Leptospira in urine samples through Loop-mediated isothermal amplification (LAMP). The results were recorded by using Hydroxyl napthol blue (HNB), SYBR GREEN I and calcein. Analytical sensitivity of LAMP was as few as 10 leptospiral organisms in spiked urine samples from cattle and dog. LigB gene based LAMP, termed as LigB-LAMP, was found 10 times more sensitive than conventional PCR...
August 10, 2017: Molecular and Cellular Probes
https://www.readbyqxmd.com/read/28782459/leptospira-spp-vaccinal-antibodies-do-not-react-with-borrelia-burgdorferi-peptides-used-in-the-accuplex-4
#2
Amber L Caress, Scott Moroff, Michael R Lappin
We attempted to determine if Leptospira spp. antibodies induced by vaccination would cross-react with Borrelia burgdorferi antigens used in a commercial automated immunofluorescent assay (AccuPlex 4 BioCD; Antech). Staff- and student-owned dogs ( n = 31) were recruited at a veterinary teaching hospital in a B. burgdorferi nonendemic area. The dogs were randomized and administered 1 of 4 commercial Leptospira spp. vaccines that contained serovars Canicola, Grippotyphosa, Icterohaemorrhagiae, and Pomona, then booster vaccinated 3 wk later...
August 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28743546/human-and-animal-leptospirosis-in-southern-brazil-a-five-year-retrospective-study
#3
Sérgio Jorge, Rodrigo Andrade Schuch, Natasha Rodrigues de Oliveira, Carlos Eduardo Pouey da Cunha, Charles Klazer Gomes, Thais Larré Oliveira, Caroline Rizzi, Aisha Farid Qadan, Violetta Dias Pacce, Ana Lúcia Coelho Recuero, Claudiomar Soares Brod, Odir Antônio Dellagostin
BACKGROUND: Leptospirosis is an emerging zoonosis attributed to multiple reservoirs. Climatic conditions influence the transmission of pathogenic leptospires, which require warm and humid conditions for survival. The influence of seasonality in human and animal leptospirosis in the subtropical region of Brazil remains poorly understood. METHODS: We performed a retrospective study to describe the patterns of human and animal exposure to leptospirosis and their association with precipitation events in Southern Brazil...
July 22, 2017: Travel Medicine and Infectious Disease
https://www.readbyqxmd.com/read/28722568/epidemiology-of-spotted-fever-group-rickettsioses-and-acute-undifferentiated-febrile-illness-in-villeta-colombia
#4
Álvaro A Faccini-Martínez, Alejandro Ramírez-Hernández, Christian Barreto, Elkin Forero-Becerra, Diego Millán, Elkin Valbuena, Andrea C Sánchez-Alfonso, Wilson O Imbacuán-Pantoja, Jesús A Cortés-Vecino, Luis J Polo-Terán, Néstor Yaya-Lancheros, Jorge Jácome, Ana M Palomar, Sonia Santibáñez, Aránzazu Portillo, José A Oteo, Marylin Hidalgo
Etiology of acute undifferentiated febrile syndrome (AUFS) is often unknown, leading to inaccurate diagnosis and treatment. Villeta town has been identified as an endemic area for spotted fever group (SFG) rickettsioses but little is known about possible amplifier hosts and other Rickettsia species different from Rickettsia rickettsii. Besides, few studies have approached other AUFS etiologies in the region. We investigated the role of dengue, leptospirosis, rickettsioses, human anaplasmosis, and Q fever as possible causes of AUFS in patients from Villeta...
June 19, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28660382/epidemiology-behavior-of-leptospirosis-in-ci%C3%A3-naga-de-oro-c%C3%A3-rdoba-colombia
#5
C Ensuncho-Hoyos, V Rodríguez-Rodríguez, A Pérez-Doria, O Vergara, A Calderón-Rangel
The purpose of this study was to determine the epidemiology of leptospirosis in rural areas of Ciénaga de Oro, Córdoba, Colombia, a convenience sampling was carried out on 13 farms. The sample size was 325 reproductive age cows, 11 canine samples, and 20 humans. The samples were subjected to MAT analysis with 11 serogroups of Leptospira interrogans sensu lato. Once the MAT results were received, urine samples were collected from 78 cows, along with 39 water samples, for bacteriological cultures and PCR for the 16S rRNA gene in L...
June 28, 2017: Tropical Animal Health and Production
https://www.readbyqxmd.com/read/28658269/leptospira-diversity-in-animals-and-humans-in-tahiti-french-polynesia
#6
Vanina Guernier, Vaea Richard, Tuxuan Nhan, Eline Rouault, Anita Tessier, Didier Musso
BACKGROUND: Leptospirosis is a highly endemic bacterial zoonosis in French Polynesia (FP). Nevertheless, data on the epidemiology of leptospirosis in FP are scarce. We conducted molecular studies on Leptospira isolated from humans and the potential main animal reservoirs in order to identify the most likely sources for human infection. METHODOLOGY/PRINCIPAL FINDINGS: Wild rats (n = 113), farm pigs (n = 181) and domestic dogs (n = 4) were screened for Leptospira infection in Tahiti, the most populated island in FP...
June 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28620258/development-of-indirect-enzyme-linked-immunosorbent-assay-for-diagnosis-of-canine-leptospirosis
#7
A Sathiyamoorthy, G Selvaraju, K M Palanivel, And P Srinivasan
AIM: This study was taken up to develop an indirect enzyme-linked immunosorbent assay (i-ELISA) for screening antibodies against Leptospira spp. in canines. MATERIALS AND METHODS: An i-ELISA was developed using outer membrane protein extracted from Leptospira interrogans serovar canicola used for coating the well with concentration of 0.5 µg/µl. A total of 250 serum samples from clinically affected and apparently healthy dogs were collected along with relevant epidemiological data at Teaching Veterinary Clinical Complex, Veterinary College and Research Institute, Namakkal, and subjected to i-ELISA...
May 2017: Veterinary World
https://www.readbyqxmd.com/read/28545521/clinical-serological-and-echocardiographic-examination-of-healthy-field-dogs-before-and-after-vaccination-with-a-commercial-tetravalent-leptospirosis-vaccine
#8
Andrea M Spiri, Sabrina Rodriguez-Campos, José M Matos, Tony M Glaus, Barbara Riond, Claudia E Reusch, Regina Hofmann-Lehmann, Barbara Willi
BACKGROUND: Leptospirosis is a re-emerging bacterial zoonosis caused by spirochetes of the genus Leptospira. Severe disease has been reported in dogs in Europe despite vaccination with bivalent Leptospira vaccines. Recently, a tetravalent canine Leptospira vaccine (Nobivac® L4) was licenced in Europe. The goal of this study was to investigate clinical signs, microscopic agglutination test (MAT) titres, haematology, blood biochemistry, cardiac (c) Troponin I levels and echocardiography before and after vaccination with this tetravalent vaccine...
May 25, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/28532993/canine-leptospirosis-in-switzerland-a-prospective-cross-sectional-study-examining-seroprevalence-risk-factors-and-urinary-shedding-of-pathogenic-leptospires
#9
Alessandro Delaude, Sabrina Rodriguez-Campos, Anou Dreyfus, Michel Jacques Counotte, Thierry Francey, Ariane Schweighauser, Sophie Lettry, Simone Schuller
Leptospirosis is an important worldwide zoonosis. While human leptospirosis remains rare in Switzerland, the incidence of canine leptospirosis is unusually high compared to other European countries. The aims of this cross-sectional study were to determine the exposure of asymtomatic dogs to pathogenic Leptospira in Switzerland, to characterise risk factors associated with seropositivity and to determine the prevalence of urinary shedding. Sampling was stratified to cover the whole of Switzerland. Sera were tested by microscopic agglutination test for antibodies against a panel of 12 serovars...
June 1, 2017: Preventive Veterinary Medicine
https://www.readbyqxmd.com/read/28513759/-diagnosis-of-leptospirosis-in-dogs
#10
Michèle Bergmann, Julia-Rebecca Llewellyn, Katrin Hartmann
Rapid confirmation of the diagnosis leptospirosis is important in order to apply appropriate treatment; in addition, infected dogs are a zoonotic risk. Culture and isolation of living leptospires from blood, urine, or tissues is considered the reference standard of diagnosis. However, sensitivity are low, and leptospires require weeks to months to grow. Therefore, diagnosis of leptospirosis is most commonly based on antibody testing or the detection of Leptospira spp. DNA by PCR. Microscopic agglutination test (MAT) is currently still the recommended confirmatory test for canine leptospirosis, despite its numerous limitations (e...
June 20, 2017: Tierärztliche Praxis. Ausgabe K, Kleintiere/Heimtiere
https://www.readbyqxmd.com/read/28475453/presence-of-antibodies-to-leptospira-spp-in-black-tailed-prairie-dogs-cynomys-ludovicianus-and-beavers-castor-canadensis-in-northwestern-mexico
#11
Andrés M López-Pérez, Gerardo Carreón-Arroyo, Daniel Atilano, Ana L Vigueras-Galván, Carlos Valdez, Daniel Toyos, Daniel Mendizabal, Jonathan López-Islas, Gerardo Suzán
Leptospires are widespread spirochete bacteria that infect mammals, including rodents and humans. We investigated the presence of Leptospira antibodies in two species of rodents from San Pedro River Basin (SPRB) in northwestern Mexico as part of the black-tailed prairie dog ( Cynomys ludovicianus ) monitoring plan and the North American beaver ( Castor canadensis ) reintroduction program. We sampled a total of 26 black-tailed prairie dogs and three beavers during October-November 2015. We detected antibodies against Leptospira spp...
May 5, 2017: Journal of Wildlife Diseases
https://www.readbyqxmd.com/read/28466955/-epidemiology-and-prevention-of-leptospirosis-in-dogs
#12
Michèle Bergmann, Julia-Rebecca Llewellyn, Katrin Hartmann
Leptospirosis is a zoonotic disease with increasing prevalence in dogs and humans. The various Leptospira serovars display different pathogenicity. Even healthy infected dogs can shed leptospires with their urine and thus, represent a risk for humans and other animals. Vaccination is the most important measure for prevention; it not only prevents disease in dogs, but also reduces shedding of leptospires in urine. For comprehensive protection through vaccination, tetravalent vaccines containing serovars of the serogroups relevant in the corresponding region should be used...
June 20, 2017: Tierärztliche Praxis. Ausgabe K, Kleintiere/Heimtiere
https://www.readbyqxmd.com/read/28384550/molecular-detection-and-isolation-of-pathogenic-leptospira-from-asymptomatic-humans-domestic-animals-and-water-sources-in-nan-province-a-rural-area-of-thailand
#13
Alongkorn Kurilung, Pattrarat Chanchaithong, Kittitat Lugsomya, Waree Niyomtham, Vanaporn Wuthiekanun, Nuvee Prapasarakul
Leptospirosis is an important zoonotic disease that is often associated with animal carriers and contamination of the environment via infected urine. This study aimed to assess pathogenic leptospiral carriage in Nan province, a rural area of Thailand where leptospirosis is endemic. Samples from 20 villages were obtained during the period 2013 to 2016, comprising urine samples collected from asymptomatic people (n=37) and domestic animals (n=342), and environmental water samples (n=14). Leptospira were cultured in Ellinghauson McCullough Johnson and Harris (EMJH) media...
March 29, 2017: Research in Veterinary Science
https://www.readbyqxmd.com/read/28367783/high-number-of-asymptomatic-dogs-as-leptospiral-carriers-in-an-endemic-area-indicates-a-serious-public-health-concern
#14
R Sant'anna, A S Vieira, J Grapiglia, W Lilenbaum
Asymptomatic dogs can be potential hosts of leptospirosis. However, the extension of this phenomenon in endemic areas has not yet been clearly defined. This study is aimed at evaluating the role of asymptomatic dogs as carriers of Leptospira in an endemic area of Brazil. A total of 131 male dogs without apparent leptospirosis symptoms were included in the study based on clinical and hematologic exams. Serum and urine samples were collected for microscopic agglutination tests (MAT) and polymerase chain reactions (PCR) targeted the LipL32 gene, respectively...
July 2017: Epidemiology and Infection
https://www.readbyqxmd.com/read/28351712/bovine-leptospirosis-prevalence-associated-risk-factors-for-infection-and-their-cause-effect-relation
#15
Juscivete F Fávero, Hugo L de Araújo, Walter Lilenbaum, Gustavo Machado, Alexandre A Tonin, Matheus D Baldissera, Lenita M Stefani, Aleksandro S Da Silva
Leptospirosis is a cosmopolitan infectious disease that causes severe reproductive disorders in cattle, especially those related to abortion. This disease has rodents as main reservoirs; however, cattle are responsible for maintenance of the disease. Thus, the aim of this study was to identify the factors associated with infection and cause-effect relation of leptospirosis in dairy herds from Southern of Brazil. Serum samples of 1242 cows were collected from herds classified as of medium and high density, and tested by microscopic agglutination test (MAT)...
March 27, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28332640/leptospirosis-in-domestic-animals-in-france-serological-results-from-1988-to-2007
#16
G André-Fontaine
Leptospirosis is a common infection in domestic animals. The microscopic agglutination test (MAT) is used for serological diagnosis. From 1988 to 2007, the Leptospira Medical and Molecular Bacteriology Laboratory at the Nantes National College of Veterinary Medicine, Food Science and Engineering used the MAT to test serum samples from more than 40,000 cattle, 40,000 pigs, 20,000 horses and 9,500 dogs. Five Leptospira serogroups were prominent, with specific variations within the four animal species: Icterohaemorrhagiae, Australis, Sejroë, Grippotyphosa and Autumnalis...
December 2016: Revue Scientifique et Technique
https://www.readbyqxmd.com/read/28303833/antimicrobial-susceptibility-of-leptospira-spp-isolated-from-environmental-human-and-animal-sources-in-malaysia
#17
Douadi Benacer, Siti Nursheena Mohd Zain, Peck Toung Ooi, Kwai Lin Thong
Leptospirosis is a zoonosis with worldwide distribution caused by pathogenic spirochetes of the genus Leptospira. The aim of this study was to evaluate the susceptibility of isolates obtained from different hosts. A total of 65 Leptospira isolates from humans (n = 1), zoonoses (rat, n = 60; dog, n = 1; swine, n = 1) and environment (n = 2) were tested against six antibiotics. All the isolates were resistant to trimethoprim and sulphamethoxazole and had high MIC toward chloramphenicol (MIC90: 6.25 μg/ml). All except one environment isolate were sensitive to ampicillin, doxycycline and penicillin G...
January 2017: Indian Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28235787/evaluation-of-a-rapid-igm-detection-test-for-diagnosis-of-acute-leptospirosis-in-dogs
#18
J Lizer, M Grahlmann, H Hapke, S Velineni, D Lin, B Kohn
Recently, a lateral flow assay (LFA) for detection of Leptospira-specific IgM in canine sera became commercially available in Europe. The present study aims to evaluate the diagnostic performance of this assay using canine sera from a collection of diagnostic accessions. Diagnostic sensitivity was assessed by testing 37 acute-phase and 9 corresponding convalescent-phase sera from dogs with a confirmed diagnosis of leptospirosis. Specificity was determined by testing sera from sick dogs with non-leptospiral infections (n=15) and healthy dogs with incomplete history of vaccination (n=45)...
May 27, 2017: Veterinary Record
https://www.readbyqxmd.com/read/28131372/diagnostic-accuracy-of-an-in-house-elisa-using-the-intermediate-species-leptospira-fainei-as-antigen-for-diagnosis-of-acute-leptospirosis-in-dogs
#19
Bruno Penna, Carla D Marassi, Hugo Libonati, Lorena Narduche, Walter Lilenbaum, Pascale Bourhy
Diagnosis of animal leptospirosis is still challenging. The microscopic agglutination test, is the current method for diagnosing leptospirosis. However, this technique requires specific equipment, highly trained staff and the maintenance of live cultures of several reference strains of Leptospira for use as antigens. Recently, an ELISA (enzyme-linked immunosorbent assay) employing a Leptospira fainei serovar Hurstbridge based antigen for the early diagnostic of human leptospirosis was developed. In this study we estimate the diagnostic sensitivity and specificity of this test in identifying acute canine leptospirosis...
February 2017: Comparative Immunology, Microbiology and Infectious Diseases
https://www.readbyqxmd.com/read/28129788/meta-analysis-to-estimate-the-load-of-leptospira-excreted-in-urine-beyond-rats-as-important-sources-of-transmission-in-low-income-rural-communities
#20
REVIEW
Veronica Barragan, Nathan Nieto, Paul Keim, Talima Pearson
BACKGROUND: Leptospirosis is a major zoonotic disease with widespread distribution and a large impact on human health. Carrier animals excrete pathogenic Leptospira primarily in their urine. Infection occurs when the pathogen enters a host through mucosa or small skin abrasions. Humans and other animals are exposed to the pathogen by direct contact with urine, contaminated soil or water. While many factors influence environmental cycling and the transmission of Leptospira to humans, the load of pathogenic Leptospira in the environment is likely to play a major role...
January 28, 2017: BMC Research Notes
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