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https://www.readbyqxmd.com/read/28526098/first-description-of-bartonella-koehlerae-infection-in-a-spanish-dog-with-infective-endocarditis
#1
María-Dolores Tabar, Laura Altet, Ricardo G Maggi, Jaume Altimira, Xavier Roura
BACKGROUND: Bartonella koehlerae has been recently described as a new cat- and cat fleas-associated agent of culture-negative human endocarditis. It has been also encountered in one dog from Israel and six dogs from the USA, but other clinically relevant reports involving this bacterium are lacking. RESULTS: A 7-year-old intact male mixed dog presented with clinico-pathological signs consistent with mitral endocarditis and cutaneous hemangiosarcoma. Molecular studies revealed the presence of Bartonella koehlerae DNA in samples from blood and mitral valve tissue...
May 19, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28504633/-tick-borne-infections-in-denmark
#2
Bo Bødker Jensen, Lukas Frans Ocias, Nanna Skaarup Andersen, Ram Benny Dessau, Karen Angeliki Krogfelt, Sigurdur Skarphedinsson
The castor bean tick, Ixodes ricinus, is common in woodlands in most of Denmark. Besides Borrelia burgdorferi, it can harbour a number of pathogenic microorganisms such as tick-borne encephalitis virus, Anaplasma phagocytophilum, Rickettsia helvetica, Francisella tularensis, Candidatus Neoehrlichia mikurensis, Bartonella spp., Borrelia miyamotoi and Babesia spp. These tick-borne infections should be a differential diagnostic consideration during the tick season in Denmark. We review the distribution, clinical manifestations, diagnosis and treatment of these microorganisms...
May 15, 2017: Ugeskrift for Laeger
https://www.readbyqxmd.com/read/28502279/evidence-and-molecular-characterization-of-bartonella-spp-and-hemoplasmas-in-neotropical-bats-in-brazil
#3
P Ikeda, M C Seki, A O T Carrasco, L V Rudiak, J M D Miranda, S M M Gonçalves, E G L Hoppe, A C A Albuquerque, M M G Teixeira, C E Passos, K Werther, R Z Machado, M R André
The order Chiroptera is considered the second largest group of mammals in the world, hosting important zoonotic virus and bacteria. Bartonella and hemotropic mycoplasmas are bacteria that parasite different mammals' species, including humans, causing different clinical manifestations. The present work aimed investigating the occurrence and assessing the phylogenetic positioning of Bartonella spp. and Mycoplasma spp. in neotropical bats sampled from Brazil. Between December 2015 and April 2016, 325 blood and/or tissues samples were collected from 162 bats comprising 19 different species sampled in five states of Brazil...
May 15, 2017: Epidemiology and Infection
https://www.readbyqxmd.com/read/28490714/the-seroprevalence-of-bartonella-henselae-in-healthy-adults-in-korea
#4
Hea Yoon Kwon, Jae Hyoung Im, Sun Myoung Lee, Ji Hyeon Baek, Areum Durey, Shin-Goo Park, Jae-Seung Kang, Jin-Soo Lee
BACKGROUND/AIMS: Cat-scratch disease (CSD), caused by Bartonella henselae is one of the most common zoonosis. However, only several cases of B. henselae infection have been reported in Korea. This study investigated the seroprevalence of B. henselae in healthy adults and related risk factors. METHODS: Serum samples from 300 healthy participants were analyzed using an immunoglobulin G immunof luorescence assay (IFA) for B. henselae isolated in Korea. Surveys on the risk factors for B...
May 2017: Korean Journal of Internal Medicine
https://www.readbyqxmd.com/read/28490579/bartonella-species-an-emerging-cause-of-blood-culture-negative-endocarditis
#5
REVIEW
Udoka Okaro, Anteneh Addisu, Beata Casanas, Burt Anderson
Since the reclassification of the genus Bartonella in 1993, the number of species has grown from 1 to 45 currently designated members. Likewise, the association of different Bartonella species with human disease continues to grow, as does the range of clinical presentations associated with these bacteria. Among these, blood-culture-negative endocarditis stands out as a common, often undiagnosed, clinical presentation of infection with several different Bartonella species. The limitations of laboratory tests resulting in this underdiagnosis of Bartonella endocarditis are discussed...
July 2017: Clinical Microbiology Reviews
https://www.readbyqxmd.com/read/28446372/prosthetic-valve-endocarditis-caused-by-bartonella-henselae-presenting-as-recurrent-fever-and-imitating-granulomatosis-with-polyangiitis
#6
Ryuichi Sada, Shunsuke Uno, Naoto Hosokawa, Tomoyoshi Komiya
No abstract text is available yet for this article.
April 23, 2017: Journal of the Formosan Medical Association, Taiwan Yi Zhi
https://www.readbyqxmd.com/read/28418306/management-of-bartonella-prosthetic-valve-endocarditis-without-cardiac-surgery
#7
Padmasayee Papineni, Aisling Carroll, Johannes Radvan, Carolyn Hemsley, John Chambers, Nicholas Cortes, Timothy Harrison, John L Klein
Two cases of Bartonella prosthetic valve endocarditis were cured when treated for 2 weeks with gentamicin and 3 months with doxycycline. Clinical cure correlated with decreased Bartonella antibody titers. This report suggests a strategy to monitor, treat, and cure Bartonella prosthetic valve endocarditis.
May 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/28412525/liver-microbiome-of-peromyscus-leucopus-a-key-reservoir-host-species-for-emerging-infectious-diseases-in-north-america
#8
A André, A Mouton, V Millien, J Michaux
Microbiome studies generally focus on the gut microbiome, which is composed of a large proportion of commensal bacteria. Here we propose a first analysis of the liver microbiome using next generation sequencing as a tool to detect potentially pathogenic strains. We used Peromyscus leucopus, the main reservoir host species of Lyme disease in eastern North America, as a model and sequenced V5-V6 regions of the 16S gene from 18 populations in southern Quebec (Canada). The Lactobacillus genus was found to dominate the liver microbiome...
April 13, 2017: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/28411218/the-conjugative-relaxase-trwc-promotes-integration-of-foreign-dna-in-the-human-genome
#9
Coral González-Prieto, Richard Gabriel, Christoph Dehio, Manfred Schmidt, Matxalen Llosa
Bacterial conjugation is a mechanism of horizontal DNA transfer. The relaxase TrwC of the conjugative plasmid R388 cleaves one strand of the transferred DNA at the oriT, covalently attaches to it and leads the ssDNA into the recipient cell. In addition, TrwC catalyzes site-specific integration of the transferred DNA into its target sequence present in the genome of the recipient bacterium. Here, we report the analysis of the efficiency and specificity of the integrase activity of TrwC in human cells, using the Type IV Secretion System of the human pathogen Bartonella henselae to introduce relaxase-DNA complexes...
April 14, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28405890/seroprevalence-of-bartonella-species-in-patients-with-ocular-inflammation
#10
Joanna Brydak-Godowska, Dorota Kopacz, Piotr K Borkowski, Beata Fiecek, Agata Hevelke, Daniel Rabczenko, Stanisława Tylewska-Wierzbanowska, Dariusz Kęcik, Tomasz Chmielewski
Bartonella species, vector-borne etiologic agents of many systemic or self-limited infections, are responsible for a widening spectrum of diseases in humans, including inflammatory conditions of the eye. The aim of this study was to determine whether there is any relationship between uveitis and the evidence of Bartonella spp. infection in the serum, ocular fluid, and cataract mass in patients with intraocular inflammation. Polymerase chain reaction (PCR)-based tests and DNA sequencing were performed on surgery-extracted specimens of intraocular fluid and lens mass of 33 patients...
April 13, 2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28404679/evaluation-of-taqman-array-card-tac-for-the-detection-of-central-nervous-system-infections-in-kenya
#11
Clayton O Onyango, Vladimir Loparev, Shirley Lidechi, Vinod Bhullar, D Scott Schmid, Kay Radford, Michael K Lo, Paul Rota, Barbara W Johnson, Jorge Munoz, Martina Oneko, Deron Burton, Carolyn M Black, John Neatherlin, Joel M Montgomery, Barry Fields
Infections of the central nervous system (CNS) are often acute with significant morbidity and mortality. Routine diagnosis of such infections is limited in developing countries and requires modern equipment in advanced laboratories that may be unavailable to a number of patients in sub-Saharan Africa. We developed a TaqMan Array Card (TAC) that detects multiple pathogens simultaneously from cerebrospinal fluid (CSF). The 21-pathogen TAC assays include two parasites (Balamuthia mandrillaris and Acanthamoeba), six bacterial pathogens (Streptococcus pneumoniae, Haemophilus influenzae, Neisseria meningitidis, Mycoplasma pneumoniae, Mycobacterium tuberculosis, and Bartonella) and 13 viruses (parechovirus, dengue, nipah, varicella zoster, mumps, measles, lyssa, herpes simplex virus 1 and 2, Epstein Barr virus, enterovirus, cytomegalovirus and chikungunya)...
April 12, 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28403058/multiorgan-involvement-confounding-the-diagnosis-of-bartonella-henselae-infective-endocarditis-in-children-with-congenital-heart-disease
#12
Christopher P Ouellette, Sarita Joshi, Karen Texter, Preeti Jaggi
Two children with congenital heart disease status post surgical correction presented with prolonged constitutional symptoms, hepatosplenomegaly and pancytopenia. Concern for malignancy prompted bone marrow biopsies that were without evidence thereof. In case 1, echocardiography identified a multilobulated vegetation on the conduit valve. In case 2, transthoracic, transesophageal and intracardiac echocardiography were performed and were without evidence of cardiac vegetations; however, pulmonic emboli raised concern for infective endocarditis...
May 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/28402742/vertebrate-ticks-distribution-and-their-role-as-vectors-in-relation-to-road-edges-and-underpasses
#13
Juan D Delgado, Estefanía Abreu-Yanes, Néstor Abreu-Acosta, Manuel D Flor, Pilar Foronda
Roads fragment vertebrate populations and affect the dynamics and dispersal patterns of vertebrate parasites. We evaluated how vertebrate ticks distribute near roads and road underpasses in human-caused road-fragmented landscapes in Seville, SW Spain. We sampled 49 stations with 93 individualized sampling points and assessed tick abundance. We explored the relationship between tick presence and abundance and distance to the nearest road and underpass (drainage culverts and other passages used by vertebrates), and landscape features through categorical regression and nonparametric statistics...
April 12, 2017: Vector Borne and Zoonotic Diseases
https://www.readbyqxmd.com/read/28399311/molecular-markers-of-pesticide-resistance-and-pathogens-in-human-head-lice-phthiraptera-pediculidae-from-rural-georgia-usa
#14
Marina E Eremeeva, Danielle Capps, Emmanuel B Winful, Shamta S Warang, Sarah E Braswell, Nikolay K Tokarevich, Denise L Bonilla, Lance A Durden
Although the head louse, Pediculus humanus capitis De Geer, and body louse, Pediculus humanus humanus L., both have a worldwide distribution, the occurrence of head louse pediculosis appears to be more prevalent in modern societies despite systematic use of various pediculicides. This study tested head lice collected in rural Georgia and body lice collected in Russia for the prevalence of a kdr-biomarker that is associated with permethrin resistance. This study also screened lice for the presence of DNA from Bartonella quintana and Acinetobacter species...
March 2, 2017: Journal of Medical Entomology
https://www.readbyqxmd.com/read/28399271/high-prevalence-of-rickettsia-spp-in-dog-fleas-siphonaptera-pulicidae-in-rural-uganda
#15
Ana M Palomar, Aitor Cevidanes, Aránzazu Portillo, Gladis Kalema-Zikusoka, Andrea D Chirife, Lourdes Romero, Jesús Muro, Lawrence Mugisha, José A Oteo, Javier Millán
Fleas are known vectors of zoonotic agents. Thirty-five fleas, including 28 Ctenocephalides felis (Bouché), four Pulex irritans (L.), and three Echidnophaga gallinacea (Westwood) from 19 rural dogs from southwestern Uganda were analyzed for the presence of Rickettsia spp. (ompB, gltA, and 17 kDa fragment genes) and Bartonella spp. (rpoB and ITS genes) by PCR. Rickettsial DNA was detected in 27 out of 28 of Ct. felis and in two out of four P. irritans. None of the E. gallinacea specimens harbored Rickettsia DNA...
March 23, 2017: Journal of Medical Entomology
https://www.readbyqxmd.com/read/28399125/prevalence-diversity-and-host-associations-of-bartonella-strains-in-bats-from-georgia-caucasus
#16
Lela Urushadze, Ying Bai, Lynn Osikowicz, Clifton McKee, Ketevan Sidamonidze, Davit Putkaradze, Paata Imnadze, Andrei Kandaurov, Ivan Kuzmin, Michael Kosoy
Bartonella infections were investigated in seven species of bats from four regions of the Republic of Georgia. Of the 236 bats that were captured, 212 (90%) specimens were tested for Bartonella infection. Colonies identified as Bartonella were isolated from 105 (49.5%) of 212 bats Phylogenetic analysis based on sequence variation of the gltA gene differentiated 22 unique Bartonella genogroups. Genetic distances between these diverse genogroups were at the level of those observed between different Bartonella species described previously...
April 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28398939/acute-unilateral-vision-loss-in-a-female-adolescent-due-to-ocular-bartonellosis
#17
Douglas S Nassif
Acute worsening of visual acuity with optic disc edema is commonly assumed to be due to idiopathic intracranial hypertension. Bartonella henselae is an unusual cause to abrupt vision loss that is associated with optic disc edema and exudative macular stars seen on examination. It is an important cause to be aware of because it responds very well to antibiotic treatment. We present a case of a female adolescent with unilateral vision loss cause by cat-scratch neuroretinitis.
April 11, 2017: Pediatric Emergency Care
https://www.readbyqxmd.com/read/28393665/the-first-report-of-bartonella-quintana-immune-reconstitution-inflammatory-syndrome-complicated-by-jarisch-herxheimer-reaction
#18
Michelle DallaPiazza, Matthew Jiro Akiyama
Bacillary angiomatosis (BA) is a rare complication of human immune deficiency virus (HIV) infection in the post-antiretroviral therapy (ART) era, and few cases of BA-associated immune reconstitution inflammatory syndrome (IRIS) have been described. We report the case of a 50-year-old man who presented with mass lesions involving the skin, subcutaneous tissues, muscle, and bone. The diagnosis of Bartonella quintana BA was confirmed by serum polymerase chain reaction. The patient's treatment course was complicated by both IRIS and Jarisch-Herxheimer reaction...
January 1, 2017: Journal of the International Association of Providers of AIDS Care
https://www.readbyqxmd.com/read/28385003/infection-to-pathogens-with-different-transmission-modes-in-feral-cats-from-urban-and-rural-areas-of-korea
#19
Jusun Hwang, Nicole Gottdenker, Dae-Hyun Oh, Hang Lee, Myung-Sun Chun
In this study, we examine the prevalence of three infectious pathogens with different transmission modes (Bartonella henselae, hemoplasma and Toxoplasma gondii) in feral cats (Felis catus) from two unique habitat types, urban and rural. We determined the infection status of three pathogens in blood samples (total N=117) through molecular or serological diagnostic methods. Overall prevalence of hemoplasma, T. gondii and B. henselae was 47.9%, 50% and 35.7%, respectively. Only seroprevalence of B. henselae was significantly higher in urban cats...
April 6, 2017: Journal of Veterinary Science
https://www.readbyqxmd.com/read/28372886/laboratory-approach-to-the-diagnosis-of-culture-negative-infective-endocarditis
#20
REVIEW
S Subedi, Z Jennings, S C-A Chen
Blood-culture negative endocarditis (BCNE) accounts for up to 35% of all cases of infective endocarditis (IE) and is a serious life-threatening condition with considerable morbidity and mortality. Rapid detection and identification of the causative pathogen is essential for timely, directed therapy. Blood-culture negative endocarditis presents a diagnostic and therapeutic challenge. Causes of BCNE are varied including: treatment with antibiotic agents prior to blood culture collection; sub-optimal specimen collection; and/or infection due to fastidious (eg...
March 16, 2017: Heart, Lung & Circulation
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