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https://www.readbyqxmd.com/read/28725301/review-of-infectious-etiology-of-acute-pancreatitis
#1
REVIEW
Prashanth Rawla, Sathyajit S Bandaru, Anantha R Vellipuram
While gallstones and alcoholism are widely known to be the most common causative agents of acute pancreatitis, about 10% of cases are thought to be caused by infectious microorganisms. These microorganisms include viruses (e.g. mumps, Coxsackie B, and hepatitis), bacteria (e.g. Mycoplasma pneumoniae and leptospirosis), and parasites (e.g. Ascaris lumbricoides, Fasciola hepatica, and hydatid disease). Each organism causes acute pancreatitis through diverse mechanisms. The review is primarily conducted in an attempt to provide a better understanding of the possibility of acute pancreatitis presenting as a complication relating to these organisms, and the aim is to guide future diagnoses, management, and predictions of complications...
June 2017: Gastroenterology Research
https://www.readbyqxmd.com/read/28722620/case-report-infectious-diseases-in-pilgrims-visiting-the-holy-land
#2
Orna Nitzan, Arnon Blum, Esther Marva, Adina Katz, Bat-Sheva Tzadok, Yaarit Nachum-Biala, Gad Baneth, Avi Peretz
Every year Christian pilgrims from around the world visit the holy sites located around the Sea of Galilee. Some become ill during their stay with infectious diseases that were acquired in their country of origin, and are hospitalized at Poriya Medical Center. They pose a diagnostic challenge due to language barriers, the rarity of these infections in Israel, and the fact that diagnostic tests are not readily available. All patient records from 2015 of Holy Land tourists hospitalized at Poriya Medical Center were screened for the diagnosis of imported zoonotic diseases that are not commonly diagnosed in Israel...
May 30, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28722594/fatal-leptospira-spp-zika-virus-coinfection-puerto-rico-2016
#3
Paige Neaterour, Aidsa Rivera, Renee L Galloway, Myriam Garcia Negrón, Brenda Rivera-Garcia, Tyler M Sharp
Coinfection with pathogens that cause acute febrile illness (AFI) can complicate patient diagnosis and management. This report describes a fatal case of Leptospira spp./Zika virus (ZIKV) coinfection in Puerto Rico. The patient presented with a 5-day history of AFI; reported behavioral risk factors for leptospirosis; was diagnosed with possible leptospirosis, dengue, chikungunya, or ZIKV disease; and received appropriate treatment of leptospirosis and dengue. Following a 3-day hospitalization, the patient died due to acute gastrointestinal hemorrhage, and kidney and liver failure...
June 26, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28722586/continuous-excretion-of-leptospira-borgpetersenii-ballum-in-mice-assessed-by-viability-quantitative-polymerase-chain-reaction
#4
Marie-Estelle Soupé-Gilbert, Emilie Bierque, Sophie Geroult, Magali Teurlai, Cyrille Goarant
Rodents are the main reservoir animals of leptospirosis. In this study, we characterized and quantified the urinary excretion dynamics of Leptospira by Mus musculus infected with 2 × 10(8) virulent Leptospira borgpetersenii serogroup Ballum. Each micturition was collected separately in metabolic cages, at 12 time points from 7 to 117 days post-infection (dpi). We detected Leptospira in all urine samples collected (up to 8 per time point per mouse) proving that Leptospira excretion is continuous with ca. 90% live L...
July 17, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28722568/epidemiology-of-spotted-fever-group-rickettsioses-and-acute-undifferentiated-febrile-illness-in-villeta-colombia
#5
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/28716157/advances-and-challenges-in-barcoding-pathogenic-and-environmental-leptospira
#6
Vanina Guernier, Kathryn J Allan, Cyrille Goarant
Leptospirosis is a zoonotic bacterial disease of global importance. A large spectrum of asymptomatic animal hosts can carry the infection and contribute to the burden of human disease. Environmental sources of human contamination also point to the importance of a hydrotelluric reservoir. Leptospirosis can be caused by as many as 15 different pathogenic or intermediate Leptospira species. However, classification of these bacteria remains complicated through the use of both serological and genetic classification systems that show poor correlation...
July 18, 2017: Parasitology
https://www.readbyqxmd.com/read/28704461/assessing-the-performance-of-remotely-sensed-flooding-indicators-and-their-potential-contribution-to-early-warning-for-leptospirosis-in-cambodia
#7
Julia Ledien, Sopheak Sorn, Sopheak Hem, Rekol Huy, Philippe Buchy, Arnaud Tarantola, Julien Cappelle
Remote sensing can contribute to early warning for diseases with environmental drivers, such as flooding for leptospirosis. In this study we assessed whether and which remotely-sensed flooding indicator could be used in Cambodia to study any disease for which flooding has already been identified as an important driver, using leptospirosis as a case study. The performance of six potential flooding indicators was assessed by ground truthing. The Modified Normalized Difference Water Index (MNDWI) was used to estimate the Risk Ratio (RR) of being infected by leptospirosis when exposed to floods it detected, in particular during the rainy season...
2017: PloS One
https://www.readbyqxmd.com/read/28704385/immunoprotective-properties-of-recombinant-liga-and-ligb-in-a-hamster-model-of-acute-leptospirosis
#8
Karen V Evangelista, Kristel Lourdault, James Matsunaga, David A Haake
Leptospirosis is the most widespread zoonosis and is considered a major public health problem worldwide. Currently, there is no widely available vaccine against leptospirosis for use in humans. A purified, recombinant subunit vaccine that includes the last six immunoglobulin-like (Ig-like) domains of the leptospiral protein LigA (LigA7'-13) protects against lethal infection but not renal colonization after challenge by Leptospira interrogans. In this study, we examined whether the addition of the first seven Ig-like domains of LigB (LigB0-7) to LigA7'-13, can enhance immune protection and confer sterilizing immunity in the Golden Syrian hamster model of acute leptospirosis...
2017: PloS One
https://www.readbyqxmd.com/read/28700741/mononuclear-macrophages-but-not-neutrophils-act-as-major-infiltrating-anti-leptospiral-phagocytes-during-leptospirosis
#9
Xu Chen, Shi-Jun Li, David M Ojcius, Ai-Hua Sun, Wei-Lin Hu, Xu'ai Lin, Jie Yan
OBJECTIVE: To identify the major infiltrating phagocytes during leptospirosis and examine the killing mechanism used by the host to eliminate Leptospira interrogans. METHODS: Major infiltrating phagocytes in Leptospira-infected C3H/HeJ mice were detected by immunohistochemistry. Chemokines and vascular endothelial cell adhesion molecules (VECAMs) of Leptospira-infected mice and leptospirosis patients were detected by microarray and immunohistochemistry. Leptospira-phagocytosing and -killing abilities of human or mouse macrophages and neutrophils, and the roles of intracellular ROS, NO and [Ca2+]i in Leptospira-killing process were evaluated by confocal microscopy and spectrofluorimetry...
2017: PloS One
https://www.readbyqxmd.com/read/28700685/characterization-of-the-molecular-chaperone-clpb-from-the-pathogenic-spirochaete-leptospira-interrogans
#10
Joanna Krajewska, Anna Modrak-Wójcik, Zbigniew J Arent, Daniel Więckowski, Michal Zolkiewski, Agnieszka Bzowska, Sabina Kędzierska-Mieszkowska
Leptospira interrogans is a spirochaete responsible for leptospirosis in mammals. The molecular mechanisms of the Leptospira virulence remain mostly unknown. Recently, it has been demonstrated that an AAA+ chaperone ClpB (a member of the Hsp100 family) from L. interrogans (ClpBLi) is not only essential for survival of Leptospira under the thermal and oxidative stresses, but also during infection of a host. The aim of this study was to provide further insight into the role of ClpB in the pathogenic spirochaetes and explore its biochemical properties...
2017: PloS One
https://www.readbyqxmd.com/read/28700061/molecular-and-serological-characterization-of-leptospira-kirschneri-serogroup-pomona-isolated-from-a-human-case-in-a-brazilian-rural-area
#11
Ilana Teruszkin Balassiano, Juliana Magalhães Vital-Brazil, Tatiane Mendes Varela Ramos, Loeci Natalina Timm, Martha Maria Pereira
INTRODUCTION: Leptospirosis is an important health concern in Brazil. Currently, information on the epidemiology of the disease in the rural areas of the country is lacking. METHODS: Serological and molecular techniques were used to characterize a clinical isolate of Leptospira. RESULTS: The strain CLEP 00060, isolated from a 59-year-old man in a rural area of Rio Grande do Sul state, Brazil, was identified as belonging to L. kirschneri serogroup Pomona serovar Mozdok...
May 2017: Revista da Sociedade Brasileira de Medicina Tropical
https://www.readbyqxmd.com/read/28686648/increased-levels-of-soluble-forms-of-e-selectin-and-icam-1-adhesion-molecules-during-human-leptospirosis
#12
Loic Raffray, Claude Giry, Yoga Thirapathi, Anne-Hélène Reboux, Marie-Christine Jaffar-Bandjee, Philippe Gasque
Leptospirosis is a multisystemic zoonotic disease with infiltration of visceral organs by Leptospira. The capacity of the vascular endothelium to grant immune cell recruitment and activation in target organs during the disease course remains poorly characterized. We ascertained the levels of expression of several soluble cell adhesion molecules (CAM) notably expressed by endothelial cells in human leptospirosis. We prospectively enrolled 20 hospitalized patients and compared them to 10 healthy controls. Disease severity was defined by one or more organ failures, or death...
2017: PloS One
https://www.readbyqxmd.com/read/28681816/clinical-and-laboratory-profile-of-dengue-viral-infections-in-and-around-mangalore-india
#13
Tina Damodar, Meena Dias, Reeta Mani, K A Shilpa, Ashwini Manoor Anand, V Ravi, Jutang Tiewsoh
BACKGROUND: Dengue (DEN) is being recognised as the world's major emerging tropical disease. Clinically, DEN may resemble other infections such as malaria, leptospirosis, and typhoid, and thus, laboratory investigations are required for definitive diagnosis. Secondary DEN infection, caused most often by dengue virus (DENV) serotypes 2 and 3, is known to present with severe disease manifestations. This study was undertaken to examine the clinical and laboratory profile of DEN viral infections and to determine the circulating serotypes in and around Mangalore, India...
April 2017: Indian Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28668503/spatial-analysis-of-leptospira-infection-in-muskrats-in-lower-saxony-germany-and-the-association-with-human-leptospirosis
#14
Jillian Hurd, Olaf Berke, Zvonimir Poljak, Martin Runge
Leptospirosis has been reported as an emerging zoonosis and the most widespread zoonotic disease in the world. Muskrats (Ondatra zibethicus) have been known to carry Leptospira serovars, which have been linked to Weil's disease - a serious and life threatening disease in humans. In this study, muskrats were sampled across 43 regions of Lower Saxony, Germany, during 2007 to 2009 and were tested for leptospirosis using Polymerase Chain Reaction (PCR). Circular and flexibly shaped spatial scan tests were applied and detected two leptospirosis clusters in Lower Saxony, Germany...
June 24, 2017: Research in Veterinary Science
https://www.readbyqxmd.com/read/28660382/epidemiology-behavior-of-leptospirosis-in-ci%C3%A3-naga-de-oro-c%C3%A3-rdoba-colombia
#15
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/28659189/clinical-predictors-of-dengue-fever-co-infected-with-leptospirosis-among-patients-admitted-for-dengue-fever-a-pilot-study
#16
Jeyanthi Suppiah, Shie-Yien Chan, Min-Wern Ng, Yam-Sim Khaw, Siew-Mooi Ching, Lailatul Akmar Mat-Nor, Naematul Ain Ahmad-Najimudin, Hui-Yee Chee
BACKGROUND: Dengue and leptospirosis infections are currently two major endemics in Malaysia. Owing to the overlapping clinical symptoms between both the diseases, frequent misdiagnosis and confusion of treatment occurs. As a solution, the present work initiated a pilot study to investigate the incidence related to co-infection of leptospirosis among dengue patients. This enables the identification of more parameters to predict the occurrence of co-infection. METHOD: Two hundred sixty eight serum specimens collected from patients that were diagnosed for dengue fever were confirmed for dengue virus serotyping by real-time polymerase chain reaction...
June 28, 2017: Journal of Biomedical Science
https://www.readbyqxmd.com/read/28658767/serial-changes-in-complete-blood-counts-in-patients-with-leptospirosis-our-experience
#17
Deepa Sowkur Anandarama Adiga, Salony Mittal, Harini Venugopal, Sowmya Mittal
INTRODUCTION: Leptospirosis is an infectious disease caused by Leptospira interrogans. It is endemic in many parts of the world. The symptoms vary between milder forms to severe type with organ dysfunction. The disease presents with diagnostic challenge as it clinically mimics acute febrile illness due to other causes. AIM: To study serial changes in complete blood counts in patients with leptospirosis. MATERIALS AND METHODS: A retrospectively collected data was prospectively studied for clinical and laboratory data of leptospirosis patients proven by raised IgM titres by ELISA on day 2 (counted from day of admission of patient to hospital) of unexplained fever...
May 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28658269/leptospira-diversity-in-animals-and-humans-in-tahiti-french-polynesia
#18
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/28644889/evaluation-of-different-serological-assays-for-early-diagnosis-of-leptospirosis-in-martinique-french-west-indies
#19
COMPARATIVE STUDY
Christophe Courdurie, Yohann Le Govic, Pascale Bourhy, Dorothee Alexer, Karine Pailla, Rafaelle Theodose, Raymond Cesaire, Jacques Rosine, Patrick Hochedez, Claude Olive
BACKGROUND: Leptospirosis is a potentially life-threatening but curable zoonosis whose prognosis depends on accurate and timely diagnosis. Because of its non-specific clinical presentation, laboratory testing is essential to confirm the diagnosis. Here, we aimed to assess the performance of two enzyme-linked immunosorbent assays (ELISAs) (ELISA Serion and ELISA-Hb Pasteur) and one immunodot (GenBio) using quantitative PCR (qPCR) as gold standard, instead of the traditional microscopic agglutination test, for the diagnosis of acute leptospirosis in an endemic area...
June 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28641918/resistance-of-mice-to-leptospira-infection-and-correlation-with-chemokine-response
#20
R H Domingos, E B Pavanel, E Nakajima, L Schons-Fonseca, R M A Da Costa, M De Franco, E Carvalho, P L Ho, E A Martins, J B Da Silva
Leptospirosis is globally widespread neglected disease, affecting most mammalian species. Clinical signs can be confused with other diseases which make the diagnosis and treatment difficult. Chemokines and cytokines are known for their role in the inflammatory and immune response to infections. The profile determination of chemokines' expressions in the course of infection may elucidate the defense mechanisms of the host and support the search for effective treatment strategies. We investigated the mechanisms of innate immunity through the comparison of chemokines induced during infection with L...
May 26, 2017: Immunobiology
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