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Mycobacterium chimaera infections following cardiac surgery in Treviso Hospital, Italy, from 2016 to 2019: Cases report

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World Journal of Clinical Cases 2019年第18期7卷 2776-2786页

作者： Walter O Inojosa Mario Giobbia Giovanna Muffato Giuseppe Minniti Francesco Baldasso Antonella Carniato Francesca Farina Gabriella Forner Maria C Rossi Stefano Formentini Roberto Rigoli Pier G Scotton Infectious Diseases Unit Treviso HospitalTreviso 31100Italy Microbiology Unit Treviso HospitalTreviso 31100Italy Cardiac Surgery Unit Treviso HospitalTreviso 31100Italy Health Management Unit Treviso HospitalTreviso 31100Italy

BACKGROUND An epidemic of Mycobacterium chimaera (M. chimaera) infections following cardiac surgery is ongoing worldwide. The outbreak was first discovered in 2011, and it has been traced to a point source contamination of the LivaNova 3T heater-cooler unit, which is used also in Italy. International data are advocated to clarify the spectrum of clinical features of the disease as well as treatment options and outcome. We report a series of M. chimaera infections diagnosed in Treviso Hospital, including the first cases notified in Italy in 2016. CASE SUMMARY Since June 2016, we diagnosed a M. chimaera infection in nine patient who had undergone cardiac valve surgery between February 2011 and November 2016. The time between cardiac surgery and developing symptoms ranged from 6 to 97 mo. Unexplained fever, psychophysical decay, weight loss, and neurological symptoms were common complaints. The median duration of symptoms was 32 wk, and the longest was almost two years. A new cardiac murmur, splenomegaly, choroidoretinitis, anaemia or lymphopenia, abnormal liver function tests and hyponatremia were common findings. All the patients presented a prosthetic valve endocarditis, frequently associated to an ascending aortic pseudoneurysm or spondylodiscitis. M. chimaera was cultured from blood, bioprosthetic tissue, pericardial abscess, vertebral tissue, and bone marrow. Mortality is high in our series, reflecting the poor outcome observed in other reports. Three patients have undergone repeat cardiac surgery. Five patients are being treated with a targeted multidrug antimycobacterial regimen. CONCLUSION Patients who have undergone cardiac surgery in Italy and presenting with signs and symptoms of endocarditis must be tested for M. chimaera.

关键词： Mycobacterium chimaera Prosthetic valve endocarditis Spondylodiscitis Cardiac surgery infections Case report

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Additional Records of the American Elephantfish <i>Callorhinchus callorynchus</i>(Chondrichthyes, Holocephali, Chimaeriformes) in Southeastern Brazil

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Natural Resources 2020年第10期11卷 439-445页

作者： Salvatore Siciliano Ana Rita O. Palmeira-Nunes Getulio Rincon Jorge Luiz Silva Nunes Sérgio C. Moreira Márcio L. V. Barbosa-Filho Laboratório de Biodiversidade Instituto Oswaldo Cruz/Fiocruz Rio de Janeiro RJ Brazil Grupo de Estudos de Mamíferos Marinhos da Regiã o dos Lagos (GEMM-Lagos) Araruama RJ Brazil Universidade Federal do Maranhã o (UFMA) Laboratório de Organismos Aquáticos Departamento de Oceanografia e Limnologia S&#227 o Luís MA Brazil Universidade Federal do Maranhã o (UFMA) Curso de Engenharia de Pesca Pinheiro MA Brazil Setor de Mamíferos Departamento de Vertebrados Museu Nacional/UFRJ Rio de Janeiro RJ Brazil Departamento de Ciências Biológicas Programa de Pós-gradua&#231 o em Etnobiologia e Conservaç o da Natureza Universidade Federal Rural de Pernambuco (UFRuPE) Campus Dois Irm&#227 os Recife PE Brazil

chimaeras, fish in the order Chimaeriformes, are among the rarest and least studied fish in the class Chondrichthyes (cartilaginous fish). Previous records have indicated that a species of chimaera known as the elepha... 详细信息

Chimaeras, fish in the order Chimaeriformes, are among the rarest and least studied fish in the class Chondrichthyes (cartilaginous fish). Previous records have indicated that a species of chimaera known as the elephantfish, or cockfish, Callorhinchus callorynchus, may be found in marine waters off southeastern Brazil, as far north as the state of São Paulo. Here we report that C. callorynchus, caught with bottom gillnet, was found in an urban fish market in the city of Rio de Janeiro (~23˚S). This and other records from a variety of places call into question the distribution limits of the American elephantfish in the southwestern Atlantic Ocean and whether, at least seasonally, this species may often be found as far north as the state of Rio de Janeiro. Because of scientific and conservation interests in the poorly known Chimaeriformes, we recommend long-term monitoring of the fish catch in ports along the southern Brazilian coast, to better understand the natural history of the intriguing chimeras.

关键词： Callorhinchus Callorynchus American Elephantfish Holocephali chimaera Bycatch Southwest Atlantic Ocean

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