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https://www.readbyqxmd.com/read/28338931/evolutionary-dynamics-of-pathoadaptation-revealed-by-three-independent-acquisitions-of-the-virb-d4-type-iv-secretion-system-in-bartonella
#1
Alexander Harms, Francisca H I D Segers, Maxime Quebatte, Claudia Mistl, Pablo Manfredi, Jonas Körner, Bruno B Chomel, Michael Kosoy, Soichi Maruyama, Philipp Engel, Christoph Dehio
The α-proteobacterial genus Bartonella comprises a group of ubiquitous mammalian pathogens that are studied as a model for the evolution of bacterial pathogenesis. Vast abundance of two particular phylogenetic lineages of Bartonella had been linked to enhanced host adaptability enabled by lineage-specific acquisition of a VirB/D4 type IV secretion system (T4SS) and parallel evolution of complex effector repertoires. However, the limited availability of genome sequences from one of those lineages as well as other, remote branches of Bartonella has so far hampered comprehensive understanding of how the VirB/D4 T4SS and its effectors called Beps have shaped Bartonella evolution...
March 7, 2017: Genome Biology and Evolution
https://www.readbyqxmd.com/read/28328183/seroprevalence-of-bartonella-species-coxiella-burnetii-and-toxoplasma-gondii-among-patients-with-hematological-malignancies-a-pilot-study-in-romania
#2
C J Messinger, E S Gurzau, E B Breitschwerdt, C I Tomuleasa, S J Trufan, M M Flonta, R G Maggi, I B Neagoe, P M Rabinowitz
Patients receiving immunosuppressive cancer treatments in settings where there is a high degree of human-animal interaction may be at increased risk for opportunistic zoonotic infections or reactivation of latent infections. We sought to determine the seroprevalence of selected zoonotic pathogens among patients diagnosed with haematologic malignancies and undergoing chemotherapeutic treatments in Romania, where much of the general population lives and/or works in contact with livestock. A convenience sample of 51 patients with haematologic cancer undergoing chemotherapy at a referral clinic in Cluj-Napoca, Romania, was surveyed regarding animal exposures...
March 22, 2017: Zoonoses and Public Health
https://www.readbyqxmd.com/read/28322716/bartonella-associated-transverse-myelitis
#3
Parham Sendi, Cedric Hirzel, Andreas Bloch, Urs Fischer, Natalie Jeannet, Livia Berlinger, Heinz Krestel
Each year in the United States, 500 patients are hospitalized for cat-scratch disease, caused by Bartonella henselae infection. We report a case of rare but serious neurologic B. henselae infection. When typical features of cat-scratch disease occur with neurologic findings, Bartonella infection should be suspected and diagnostic testing should be performed.
April 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/28298245/serological-and-molecular-prevalence-of-canine-vector-borne-diseases-cvbds-in-korea
#4
Guk-Hyun Suh, Kyu-Sung Ahn, Jong-Ho Ahn, Ha-Jung Kim, Christian Leutenegger, SungShik Shin
BACKGROUND: Previous surveys in dogs from Korea indicated that dogs are exposed to a variety of vector- borne pathogens, but perception for a nation-wide canine vector-borne disease (CVBD) occurrence has been missing. We report here results of both serological and molecular prevalence studies for major CVBDs of dogs from all over the South Korean Peninsula except for Jeju Island. RESULTS: Serological survey of 532 outdoor dogs revealed the highest prevalence for Dirofilaria immitis (25...
March 16, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28293411/a-strange-manifestation-of-malaria-in-a-native-nigerian-boy
#5
Paola Magro, Ilaria Izzo, Barbara Saccani, Salvatore Casari, Silvio Caligaris, Lina Rachele Tomasoni, Alberto Matteelli, Annamaria Lombardi, Antonella Meini, Francesco Castelli
The protective role of Sickle Cell Trait (SCT) in malaria endemic areas has been proved, and prevalence of HbS gene in malaria endemic areas is high. Splenic infarction is a well-known complication of SCT, while the association with malaria is considered rare. A Nigerian boy was admitted to our ward after returning from his country of origin, for P. falciparum malaria. He underwent abdominal ultrasound for upper right abdominal pain, showing cholecystitis and multiple splenic lesions suggestive of abscesses...
2017: Mediterranean Journal of Hematology and Infectious Diseases
https://www.readbyqxmd.com/read/28290975/death-of-military-working-dogs-due-to-bartonella-vinsonii-subspecies-berkhoffii-genotype-iii-endocarditis-and-myocarditis
#6
Leslie M Shelnutt, Nandhakumar Balakrishnan, Justin DeVanna, Kenneth L Batey, Edward B Breitschwerdt
OBJECTIVES: As a result of extensive field-related activities, military working dogs (MWDs) have an increased occupational risk for acquiring vector-borne infectious diseases. METHODS: Indirect fluorescent antibody, Bartonella alpha-proteobacteria growth medium enrichment culture, and 16-23S Bartonella intergenic transcribed spacer polymerase chain reaction were performed using blood, serum, or tissue specimens. RESULTS: Endocarditis was diagnosed in three MWDs infected with Bartonella vinsonii subspecies (subsp...
March 2017: Military Medicine
https://www.readbyqxmd.com/read/28288759/feline-and-canine-leishmaniosis-and-other-vector-borne-diseases-in-the-aeolian-islands-pathogen-and-vector-circulation-in-a-confined-environment
#7
Domenico Otranto, Ettore Napoli, Maria Stefania Latrofa, Giada Annoscia, Viviana Domenica Tarallo, Grazia Greco, Eleonora Lorusso, Laura Gulotta, Luigi Falsone, Fabrizio Solari Basano, Maria Grazia Pennisi, Katrin Deuster, Gioia Capelli, Filipe Dantas-Torres, Emanuele Brianti
Vector-borne diseases (VBDs) are prevalently investigated in dogs. Studies on feline VBDs are scant, though feline leishmaniosis (FeL) is increasingly recognised as a disease of cats in endemic areas. Comprehensive investigations on the distribution of VBDs in populations of cats and dogs living in relatively small geographical areas, such as islands, are currently lacking. In this study the prevalence of Leishmania infantum and other VBD pathogens was assessed in cohorts of cats and dogs living in the Aeolian Islands...
March 15, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28285597/prevalence-study-and-risk-factor-analysis-of-selected-bacterial-protozoal-and-viral-including-vector-borne-pathogens-in-cats-from-cyprus
#8
Charalampos Attipa, Kostas Papasouliotis, Laia Solano-Gallego, Gad Baneth, Yaarit Nachum-Biala, Elpida Sarvani, Toby G Knowles, Sena Mengi, David Morris, Chris Helps, Séverine Tasker
BACKGROUND: Feline infectious agent studies are lacking in Cyprus. The aims of this study were to determine the prevalence and risk factors for various feline infectious agents, including feline vector-borne pathogens (FVBP), in cats from Cyprus. METHODS: A cross-sectional, descriptive, multicentre study was performed on 174 feline samples [138 owned and 36 shelter-feral, including both healthy (43) and non-healthy (131), cats] from private veterinary clinics from all six districts of Cyprus...
March 13, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28285590/molecular-detection-of-hepatozoon-spp-and-cytauxzoon-sp-in-domestic-and-stray-cats-from-madrid-spain
#9
David Díaz-Regañón, Alejandra Villaescusa, Tania Ayllón, Fernando Rodríguez-Franco, Gad Baneth, Lydia Calleja-Bueno, Mercedes García-Sancho, Beatriz Agulla, Ángel Sainz
BACKGROUND: Different species of apicomplexan protozoans of the genera Hepatozoon and Cytauxzoon can infect domestic cats, but their epidemiology and clinical relevance are not fully understood. The aim of this study was to assess the molecular prevalence of Hepatozoon spp. and Cytauxzoon spp. and to identify associated risk factors and clinical and laboratory abnormalities in a population of cats from Madrid, Spain. METHODS: Six hundred and forty-four client-owned and stray cats from Madrid, Spain, were included in this study...
March 13, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28285589/molecular-detection-of-bartonella-henselae-in-11-ixodes-ricinus-ticks-extracted-from-a-single-cat
#10
Yvonne Regier, Wibke Ballhorn, Volkhard A J Kempf
BACKGROUND: Bartonella henselae is a highly prevalent, vector-borne pathogen. Transmission to humans and animals by ticks is discussed controversially. Here, we present a case report, where eleven Ixodes ricinus ticks all harbouring B. henselae DNA were removed from one single cat. RESULTS: The first feeding tick was tested positive for B. henselae DNA. The cat was also found to be seropositive for anti-B. henselae IgG antibodies (titer 1:640). Bartonella henselae was not cultivatable from cat blood...
March 13, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28285583/molecular-detection-of-vector-borne-pathogens-in-blood-and-splenic-samples-from-dogs-with-splenic-disease
#11
Rebeca Movilla, Laura Altet, Lorena Serrano, María-Dolores Tabar, Xavier Roura
BACKGROUND: The spleen is a highly perfused organ involved in the immunological control and elimination of vector-borne pathogens (VBP), which could have a fundamental role in the pathogenesis of splenic disease. This study aimed to evaluate certain VBP in samples from dogs with splenic lesions. METHODS: Seventy-seven EDTA-blood and 64 splenic tissue samples were collected from 78 dogs with splenic disease in a Mediterranean area. Babesia spp., Bartonella spp., Ehrlichia/Anaplasma spp...
March 13, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28265290/clinical-profile-and-visual-outcome-of-ocular-bartonellosis-in-malaysia
#12
Chai Lee Tan, Lai Chan Fhun, Evelyn Li Min Tai, Nor Hasnida Abdul Gani, Julieana Muhammed, Tengku Norina Tuan Jaafar, Liza Sharmini Ahmad Tajudin, Wan-Hazabbah Wan Hitam
Background. Ocular bartonellosis can present in various ways, with variable visual outcome. There is limited data on ocular bartonellosis in Malaysia. Objective. We aim to describe the clinical presentation and visual outcome of ocular bartonellosis in Malaysia. Materials and Methods. This was a retrospective review of patients treated for ocular bartonellosis in two ophthalmology centers in Malaysia between January 2013 and December 2015. The diagnosis was based on clinical features, supported by a positive Bartonella spp...
2017: Journal of Tropical Medicine
https://www.readbyqxmd.com/read/28263407/bartonella-henselae-in-canine-cavitary-effusions-prevalence-identification-and-clinical-associations
#13
Amy L Weeden, Natalie A Cherry, Edward B Breitschwerdt, Avery G Cheves, Heather L Wamsley
BACKGROUND: Previous reports suggest an association between Bartonella infection and effusions in dogs and human beings. OBJECTIVES: The aims of this study were to determine the prevalence of Bartonella infection in canine effusions and to investigate historic and clinical parameters predictive of Bartonella in dogs with effusions. METHODS: Canine cavitary effusions submitted for analysis and, if available, paired EDTA blood, were screened for Bartonella infection using the Bartonella α-proteobacteria growth medium enrichment culture/PCR diagnostic platform (Bartonella enrichment PCR or ePCR) at Galaxy Diagnostics, Inc...
March 6, 2017: Veterinary Clinical Pathology
https://www.readbyqxmd.com/read/28261565/borrelia-diversity-and-co-infection-with-other-tick-borne-pathogens-in-ticks
#14
Cristian Raileanu, Sara Moutailler, Ionuţ Pavel, Daniela Porea, Andrei D Mihalca, Gheorghe Savuta, Muriel Vayssier-Taussat
Identifying Borrelia burgdorferi as the causative agent of Lyme disease in 1981 was a watershed moment in understanding the major impact that tick-borne zoonoses can have on public health worldwide, particularly in Europe and the USA. The medical importance of tick-borne diseases has long since been acknowledged, yet little is known regarding the occurrence of emerging tick-borne pathogens such as Borrelia spp., Anaplasma phagocytophilum, Rickettsia spp., Bartonella spp., "Candidatus Neoehrlichia mikurensis", and tick-borne encephalitis virus in questing ticks in Romania, a gateway into Europe...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28256443/cat-scratch-disease-during-etanercept-therapy-in-a-rheumatoid-arthritis-patient
#15
Alberto O Orden, Norma N Nardi, Alicia B Vilaseca, Ana C Colombini, Nora G Barrios, Anahí Vijnovich Barón
Cat scratch disease (CSD) is an infectious disorder caused by Bartonella henselae and characterized by fever and granulomatous lymphadenopathy. Immunosuppression is a risk factor for the development of atypical forms of the disease. We report the case of a 52-year-old woman who presented with fever and bilateral inguinal lymph node enlargement. She did not have apparent contact with animals. The patient was receiving etanercept therapy for rheumatoid arthritis. Lymph node biopsy demonstrated granulomatous lymphadenitis...
February 27, 2017: Reumatología Clinica
https://www.readbyqxmd.com/read/28249707/bartonella-species-pathogenic-for-humans-infect-pets-free-ranging-wild-mammals-and-their-ectoparasites-in-the-caatinga-biome-northeastern-brazil-a-serological-and-molecular-study
#16
Mariana Campos Fontalvo, Alexsandra Rodrigues de Mendonça Favacho, Andreina de Carvalho Araujo, Naylla Mayana Dos Santos, Glauber Meneses Barboza de Oliveira, Daniel Moura Aguiar, Elba Regina Sampaio de Lemos, Mauricio Claudio Horta
This study verified the occurrence of Bartonella spp. in dogs, cats, wild mammals and their ectoparasites in Petrolina and Lagoa Grande Counties, Pernambuco, located in a semi-arid region in Northeastern Brazil. Anti-Bartonella spp. antibodies were detected by indirect immunofluorescence assay (IFA) in 24.8% of dogs (27/109) and in 15% of cats (6/40). Bartonella sp. DNA was identified by PCR performed on DNA extracted from blood and ectoparasites using primers targeting Bartonella sp. gltA and ribC genes in 100% (9/9) of Pulex irritans from Cerdocyon thous, 57...
February 26, 2017: Brazilian Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28248955/first-identification-of-rickettsia-helvetica-in-questing-ticks-from-a-french-northern-brittany-forest
#17
Sarah I Bonnet, Richard E L Paul, Emmanuel Bischoff, Martine Cote, Evelyne Le Naour
Tick-borne rickettsiae are considered to be emerging, but data about their presence in western Europe are scarce. Ixodes ricinus ticks, the most abundant and widespread tick species in western Europe, were collected and tested for the presence of several tick-borne pathogens in western France, a region never previously explored in this context. There was a high tick abundance with a mean of 4 females, 4.5 males, and 23.3 nymphs collected per hour per collector. Out of 622 tested ticks, specific PCR amplification showed the presence of tick symbionts as well as low prevalence of Borrelia burgdorferi (0...
March 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28235879/experimental-manipulation-shows-a-greater-influence-of-population-than-dietary-perturbation-on-the-microbiome-of-tyrophagus-putrescentiae
#18
Tomas Erban, Ondrej Ledvinka, Marta Nesvorna, Jan Hubert
Tyrophagus putrescentiae (TP) is inhabited by bacteria that differ among mite populations (strains) and diets. Here, we investigated how the microbiome and fitness of TP are altered by dietary perturbations and mite populations. Four TP populations, referred to as Dog, Koppert, Laboratory and Phillips, underwent a perturbation, i.e., a dietary switch from a rearing diet to two experimental diets. The microbiome was investigated by sequencing the V1-V3 portion of the 16S rRNA gene, and selected bacterial taxa were quantified by qPCR using group/taxa-specific primers...
February 24, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28221130/whole-genome-analysis-of-bartonella-ancashensis-a-novel-pathogen-causing-verruga-peruana-rural-ancash-region-peru
#19
Kristin E Mullins, Jun Hang, Robert J Clifford, Fatma Onmus-Leone, Yu Yang, Ju Jiang, Mariana Leguia, Matthew R Kasper, Ciro Maguina, Emil P Lesho, Richard G Jarman, Allen Richards, David Blazes
The genus Bartonella contains >40 species, and an increasing number of these Bartonella species are being implicated in human disease. One such pathogen is Bartonella ancashensis, which was isolated in blood samples from 2 patients living in Caraz, Peru, during a clinical trial of treatment for bartonellosis. Three B. ancashensis strains were analyzed by using whole-genome restriction mapping and high-throughput pyrosequencing. Genome-wide comparative analysis of Bartonella species showed that B. ancashensis has features seen in modern and ancient lineages of Bartonella species and is more related to B...
March 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/28221109/potentially-zoonotic-bartonella-in-bats-from-france-and-spain
#20
Matthew J Stuckey, Henri-Jean Boulouis, Florence Cliquet, Evelyne Picard-Meyer, Alexandre Servat, Nidia Aréchiga-Ceballos, Juan E Echevarría, Bruno B Chomel
We detected Bartonella in 11 of 109 insectivorous bats from France and 1 of 26 bats from Spain. These genetic variants are closely related to bat-associated Bartonella described in Finland and the United Kingdom and to B. mayotimonensis, the agent of a human endocarditis case in the United States.
March 2017: Emerging Infectious Diseases
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