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Eosinophilic meningitis

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https://www.readbyqxmd.com/read/28802946/effects-of-experimental-angiostrongylus-cantonensis-infection-on-the-reproductive-biology-of-biomphalaria-straminea-and-biomphalaria-tenagophila
#1
Mariana G Lima, Vinícius M Tunholi-Alves, Tatiane Cristina S Bonfim, Fabrício N Gaudêncio, Juberlan S Garcia, Arnaldo Maldonado, Jairo Pinheiro, Silvana C Thiengo
Eosinophilic meningoencephalitis is an endemic zoonosis in Southeast Asia and the Pacific Islands, but in recent years, new cases have been reported in various countries outside these regions, including Brazil, where it is considered an emerging disease. In this study, the effect of infection by the nematode Angiostrongylus cantonensis, one of the main etiologic agent of this disease, on the reproductive biology of the planorbid snails Biomphalaria straminea and B. tenagophila was investigated during the pre-patent period...
August 9, 2017: Journal of Invertebrate Pathology
https://www.readbyqxmd.com/read/28719951/neuronal-apoptosis-pathological-basis-of-behavioral-dysfunctions-induced-by-angiostrongylus-cantonensis-in-rodents-model
#2
Shiqi Luo, Lisi OuYang, Jie Wei, Feng Wu, Zhongdao Wu, Wanlong Lei, Dongjuan Yuan
Angiostrongylus cantonensis invades the central nervous system (CNS) of humans to induce eosinophilic meningitis and meningoencephalitis and leads to persistent headache, cognitive dysfunction, and ataxic gait. Infected mice (nonpermissive host), admittedly, suffer more serious pathological injuries than rats (permissive host). However, the pathological basis of these manifestations is incompletely elucidated. In this study, the behavioral test, histological and immunohistochemical techniques, and analysis of apoptotic gene expression, especially caspase-3, were conducted...
June 2017: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/28704038/eosinophilic-meningitis-caused-by-angiostrongylus-cantonensis
#3
Shan Lv, Xiao-Nong Zhou, Jason R Andrews
Rat lungworm, Angiostrongylus cantonensis, is one major cause of human eosinophilic meningitis. This helminth is endemic in Southeast Asia, Pacific Islands, and the Caribbean and has recently expanded to South America. The infection is characterized by an elevated eosinophil count in cerebrospinal fluid. Common symptoms and signs include headache, neck stiffness, paresthesia and nausea/vomiting. The unique history of eating freshwater and land snails or slugs within 2 weeks before onset is helpful for diagnosis...
July 13, 2017: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/28626635/eosinophilic-meningoencephalitis-associated-with-rat-lungworm-angiostrongylus-cantonensis-migration-in-two-nine-banded-armadillos-dasypus-novemcinctus-and-an-opossum-didelphis-virginiana-in-the-southeastern-united-states
#4
Martha F Dalton, Heather Fenton, Christopher A Cleveland, Elizabeth J Elsmo, Michael J Yabsley
Angiostrongylus cantonensis, the rat lungworm, was the cause of neural larval migrans in two nine-banded armadillos (Dasypus novemcinctus) and one Virginia opossum (Didelphis virginiana) from the southeastern United States. Histologic findings in all three cases included eosinophilic meningoencephalitis with variable numbers of nematode larvae in the meninges or the neuroparenchyma. In two of the three cases, nematodes were extracted from brain tissue via a "squash prep" method. Identification of the nematodes was confirmed by amplification and sequence analysis of the partial cytochrome c oxidase subunit I gene from all three cases...
August 2017: International Journal for Parasitology. Parasites and Wildlife
https://www.readbyqxmd.com/read/28548945/soluble-antigens-from-the-neurotropic-pathogen-angiostrongylus-cantonensis-directly-induce-thymus-atrophy-in-a-mouse-model
#5
Zhen Liu, Dong-Ming Su, Zi-Long Yu, Feng Wu, Rui-Feng Liu, Shi-Qi Luo, Zhi-Yue Lv, Xin Zeng, Xi Sun, Zhong-Dao Wu
The nematode Angiostrongylus cantonensis (A.C.) is a neurotropic pathogen; stage-III larva invade the human (non-permissive host) central nervous system (CNS) to cause eosinophilic meningitis or meningoencephalitis accompanied by immunosuppression. In an A.C.-infectedmouse (another non-permissive host) model, CNS damage-associated T cell immune deficiency and severe inflammation were proposed to result from activation of the hypothalamic-pituitary-adrenal (HPA) axis. However, glucocorticoids are anti-inflammatory agents...
July 25, 2017: Oncotarget
https://www.readbyqxmd.com/read/28542310/geographic-distribution-of-angiostrongylus-cantonensis-in-wild-rats-rattus-rattus-and-terrestrial-snails-in-florida-usa
#6
Heather D Stockdale Walden, John D Slapcinsky, Shannon Roff, Jorge Mendieta Calle, Zakia Diaz Goodwin, Jere Stern, Rachel Corlett, Julia Conway, Antoinette McIntosh
The parasitic nematode Angiostrongylus cantonensis is a major cause of eosinophilic meningitis in humans, and has been documented in other incidental hosts such as birds, horses, dogs and non-human primates. It is endemic in Hawaii, and there have been sporadic reports in the southern continental United States. This parasite uses rats as definitive hosts and snails as intermediate hosts. In this study, we collected potential definitive and intermediate hosts throughout Florida to ascertain the geographic distribution in the state: Rats, environmental rat fecal samples, and snails were collected from 18 counties throughout the state...
2017: PloS One
https://www.readbyqxmd.com/read/28518042/autochthonous-case-of-eosinophilic-meningitis-caused-by-angiostrongylus-cantonensis-france-2016
#7
Yann Nguyen, Benjamin Rossi, Nicolas Argy, Catherine Baker, Beatrice Nickel, Hanspeter Marti, Virginie Zarrouk, Sandrine Houzé, Bruno Fantin, Agnès Lefort
We report a case of a 54-year-old Moroccan woman living in France diagnosed with eosinophilic meningitis caused by Angiostrongylus cantonensis. Diagnosis was based on clinical symptoms and confirmed by testing of serum and cerebrospinal fluid samples. Physicians should consider the risk for A. cantonensis infection outside of endemic areas.
June 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/28493001/study-on-the-tolerance-and-adaptation-of-rats-to-angiostrongylus-cantonensis-infection
#8
Liu Ji, Xu Yiyue, He Xujin, Zheng Minghui, Zhang Mengying, Hu Yue, Wu Yanqi, Song Langui, Zeng Xin, Lin Datao, Wan Shuo, Zheng Huanqin, Wu Zhongdao, Lv Zhiyue
Angiostrongylus cantonensis (A. cantonensis) is the most common infectious agent causing eosinophilic meningitis. As an important food-borne parasitic disease, angiostrongyliasis cantonensis is an emerging infectious disease which brings severe harm to central nerve system of human. Rat, one of the few permissive hosts of A. cantonensis known to date, plays an indispensable role in the worm's life cycle. However, the tolerance and adaptation of rat to A. cantonensis infection is rarely understood. In this study, we infected rats with different numbers the third stage larvae (L3) of A...
July 2017: Parasitology Research
https://www.readbyqxmd.com/read/28425387/zebra-borne-neurotropic-equid-herpesvirus-1-meningoencephalitis-in-a-thomson-s-gazelle-eudorcas-thomsonii
#9
Kanako Sakaguchi, Kenneth Kim, Ingeborg Langohr, Annabel G Wise, Roger K Maes, Gordon Pirie, Tokuma Yanai, Mohie Haridy, Lorrie Gaschen, Fabio Del Piero
We describe the histopathologic, immunohistochemical, and molecular features of a case of meningoencephalitis in a Thomson's gazelle ( Eudorcas thomsonii) naturally infected with zebra-borne equid herpesvirus 1 (EHV-1) and the implications for the molecular detection of zebra-borne EHV-1. A 4-y-old female Thomson's gazelle was submitted for postmortem examination; no gross abnormalities were noted except for meningeal congestion. Microscopic evaluation demonstrated multifocal nonsuppurative meningoencephalitis with intranuclear eosinophilic and amphophilic inclusion bodies and EHV-9 antigen in neurons...
April 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28347653/cytochrome-c-oxidase-subunit-i-haplotype-diversity-of-angiostrongylus-cantonensis-nematoda-angiostrongylidae
#10
Praphathip Eamsobhana, Sze-Looi Song, Hoi-Sen Yong, Anchana Prasartvit, Sudarat Boonyong, Anchalee Tungtrongchitr
The rat lungworm Angiostrongylus cantonensis is a food-borne zoonotic parasite of public health importance worldwide. It is the primary etiologic agent of eosinophilic meningitis and eosinophilic meningoencephalitis in humans in many countries. It is highly endemic in Thailand especially in the northeast region. In this study, A. cantonensis adult worms recovered from the lungs of wild rats in different geographical regions/provinces in Thailand were used to determine their haplotype by means of the mitochondrial partial cytochrome c oxidase subunit I (COI) gene sequence...
March 27, 2017: Acta Tropica
https://www.readbyqxmd.com/read/28169282/anti-apoptotic-effects-of-sonic-hedgehog-signalling-through-oxidative-stress-reduction-in-astrocytes-co-cultured-with-excretory-secretory-products-of-larval-angiostrongylus-cantonensis
#11
Kuang-Yao Chen, Cheng-Hsun Chiu, Lian-Chen Wang
Angiostrongylus cantonensis, the rat lungworm, is an important aetiologic agent of eosinophilic meningitis and meningoencephalitis in humans. Co-culturing astrocytes with soluble antigens of A. cantonensis activated the Sonic hedgehog (Shh) signalling pathway and inhibited the apoptosis of astrocytes via the activation of Bcl-2. This study was conducted to determine the roles of the Shh signalling pathway, apoptosis, and oxidative stress in astrocytes after treatment with excretory-secretory products (ESP) from A...
February 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28158507/angiostrongylus-cantonensis-is-an-important-cause-of-eosinophilic-meningitis-in-southern-vietnam
#12
Angela McBride, Tran Thi Hong Chau, Nguyen Thi Thu Hong, Nguyen Thi Hoang Mai, Nguyen To Anh, Tran Tan Thanh, Tran Thi Hue Van, Le Thi Xuan, Tran Phu Manh Sieu, Le Hong Thai, Ly Van Chuong, Dinh Xuan Sinh, Nguyen Duy Phong, Nguyen Hoan Phu, Jeremy Day, Ho Dang Trung Nghia, Tran Tinh Hien, Nguyen Van Vinh Chau, Guy Thwaites, Le Van Tan
We utilized polymerase chain reaction (PCR) to demonstrate that Angiostrongylus cantonensis was responsible for 67.3% of 55 cases of eosinophilic meningitis from a cohort of 1,690 adult patients with CNS infection at a tertiary hospital in southern Vietnam. Longer duration of illness, depressed consciousness, and peripheral blood eosinophilia were associated with PCR positivity.
June 15, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28158416/eosinophilic-meningitis-due-to-infection-with-paragonimus-kellicotti
#13
Nathan C Bahr, Robin L Trotman, Hala Samman, Richard S Jung, Lee R Rosterman, Gary J Weil, Daniel R Hinthorn
Paragonimus kellicotti is an emerging pathogen in the United States with 19 previously reported cases, most in Missouri. Pulmonary symptoms with eosinophilia are most common, though 1 case did involve the central nervous system with few symptoms. We describe the first 2 cases of eosinophilic meningitis due to Paragonimus kellicotti.
May 1, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28114150/chronic-eosinophilic-meningoencephalitis-by-prototheca-wickerhamii-in-an-immunocompetent-boy
#14
Ari Ahn, Yong-Joon Choe, Jeonghyun Chang, Duckhee Kim, Heungsup Sung, Mi-Na Kim, Seok Ho Hong, Jina Lee, Mi-Sun Yum, Tae-Sung Ko
Human protothecosis is mainly a cutaneous infection caused by the Prototheca species. Prototheca wickerhamii is an established pathogen of eosinophilic meningoencephalitis in dogs, but no eosinophilic pleocytosis of the cerebrospinal fluid has been reported in human cases of meningitis. Herein, we report a case of chronic protothecosis manifesting eosinophilic meningoencephalitis in an immunocompetent boy.
July 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/28070007/first-evidence-of-angiostrongyliasis-caused-by-angiostrongylus-cantonensis-in-guadeloupe-lesser-antilles
#15
Céline Dard, Jean-Eudes Piloquet, Yvonne Qvarnstrom, LeAnne M Fox, Helmi M'kada, Jean-Christophe Hebert, Didier Mattera, Dorothée Harrois
AbstractInfection by the rat lungworm Angiostrongylus cantonensis represents the most common cause of infectious eosinophilic meningitis in humans, causing central nervous system (CNS) angiostrongyliasis. Most of CNS angiostrongyliasis cases were described in Asia, Pacific Basin, Australia, and some limited parts of Africa and America. CNS angiostrongyliasis has been reported in the Caribbean but never in the Lesser Antilles. The primary objectives of this study were to depict the first case of CNS angiostrongyliasis in the Lesser Antilles and investigate the environmental presence of A...
March 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/27940331/cryptic-lineage-diversity-in-the-zoonotic-pathogen-angiostrongylus-cantonensis
#16
Sirilak Dusitsittipon, Charles D Criscione, Serge Morand, Chalit Komalamisra, Urusa Thaenkham
Delimitation of species is still a necessity among parasitic pathogens especially where morphological characters provide limited discernibility. Identification of cryptic lineages (independently evolving lineages that are morphologically similar) is critical as there could be lineage-specific traits that are of epidemiological importance. Angiostrongylus cantonensis is a zoonotic pathogen that can cause eosinophilic meningitis in humans. Recent reports of single marker sequence divergence hint at the potential for cryptic diversity in this lungworm...
December 8, 2016: Molecular Phylogenetics and Evolution
https://www.readbyqxmd.com/read/27870071/eosinophilic-meningomyelitis-associated-with-t-cell-lymphoma-in-a-cat
#17
Kathryn Y Bray, Karen R Muñana, Kristina Meichner, Laura A White, Gabriela Seiler
A 12-year-old cat was presented for evaluation of progressive tetraparesis. Magnetic resonance imaging of the cervical spine demonstrated T2-hyperintensity, and contrast enhancement within the C4-C7 spinal cord, with marked meningeal contrast enhancement and segmental nerve root thickening. Lumbar cerebrospinal fluid contained 407 total nucleated cells/μL, with 99% eosinophils. The cat transiently improved with prednisolone, clindamycin, and ivermectin therapy, but subsequently worsened and was euthanized...
December 2016: Veterinary Clinical Pathology
https://www.readbyqxmd.com/read/27733201/activation-of-the-hypothalamic-pituitary-adrenal-hpa-axis-contributes-to-the-immunosuppression-of-mice-infected-with-angiostrongylus-cantonensis
#18
Ai-Ling Chen, Xi Sun, Wei Wang, Jin-Feng Liu, Xin Zeng, Jing-Fan Qiu, Xin-Jian Liu, Yong Wang
BACKGROUND: Immunosuppression has been described as a consequence of brain injury and infection by different mechanisms. Angiostrongylus cantonensis can cause injury to the central nervous system and eosinophilic meningitis to human. Both T cell and B cell immunity play an essential role in the resistance of the infection. However, whether brain injury caused by A. cantonensis infection can lead to immunosuppression is not clear. Therefore, the present study sought to observe the alteration of immune responses in mice infected with A...
October 12, 2016: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/27578821/angiostrongylus-cantonensis-infection-a-cause-of-fever-of-unknown-origin-in-pediatric-patients
#19
Catherine E Foster, Erin G Nicholson, Angela C Chun, Maya Gharfeh, Sara Anvari, Filiz O Seeborg, Michael A Lopez, Judith R Campbell, Lucila Marquez, Jeffrey R Starke, Debra L Palazzi
Fever of unknown origin (FUO) in children is frequently caused by infectious diseases. Angiostrongylus cantonensis, while a primary cause of eosinophilic meningitis, is rarely a cause of FUO. We present 2 pediatric cases of FUO caused by Angiostrongylus cantonensis acquired in Houston, Texas, outside its usual geographic distribution.
December 1, 2016: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/27513930/angiostrongylus-cantonensis-and-a-malaysiensis-broadly-overlap-in-thailand-lao-pdr-cambodia-and-myanmar-a-molecular-survey-of-larvae-in-land-snails
#20
Rutchanee Rodpai, Pewpan M Intapan, Tongjit Thanchomnang, Oranuch Sanpool, Lakkhana Sadaow, Sakhone Laymanivong, Win Papa Aung, Issarapong Phosuk, Porntip Laummaunwai, Wanchai Maleewong
Angiostrongylus cantonensis is a zoonotic nematode parasite causing human eosinophilic meningitis (or meningoencephalitis) worldwide. A closely related species, Angiostrongylus malaysiensis, might also be a human pathogen. Larvae were obtained from land snails in Lao PDR, Cambodia, Myanmar and Thailand. We sequenced two nuclear gene regions (nuclear ribosomal ITS2 and SSU rRNA) and a portion of one mitochondrial gene (COI) from these larvae. Angiostrongylus cantonensis and A. malaysiensis were identified. This is the first report of the molecular identification of the two Angiostrongylus species in Lao PDR, Cambodia and Myanmar...
2016: PloS One
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