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Eosinophilic meningitis

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https://www.readbyqxmd.com/read/28989050/novel-application-of-time-spatial-labeling-inversion-pulse-magnetic-resonance-imaging-for-diagnosis-of-external-hydrocephalus
#1
Shunsuke Nakae, Kazuhiro Murayama, Kazuhide Adachi, Tadashi Kumai, Masato Abe, Yuichi Hirose
BACKGROUND: Although a subdural fluid collection is frequently observed, diagnostic methods that differentiate between the subdural collection caused by external hydrocephalus and that caused by subdural hygroma have not been established. Here, we report a case of external hydrocephalus caused by Gliadel-induced eosinophilic meningitis that has been previously reported in only one case and can be diagnosed by time-spatial labeling inversion pulse magnetic resonance imaging (Time-SLIP MRI)...
October 5, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28953426/a-proteomic-analysis-of-the-differentially-expressed-proteins-in-the-intracranial-angiostrongylus-cantonensis-larvae-in-permissive-and-non-permissive-hosts
#2
Dan She, Xin Zhang, Ze Xun Mo, Gui Lan Yang, Jyh-Wei Shin, Xiao Guang Chen, Li Wang Cui, Hua Li
Angiostrongylus cantonensis infection can lead to severe neuropathological damages caused by their development in the central nervous system (CNS) after penetrating the blood-brain barrier (BBB). They commonly cause eosinophilic meningitis or meningoencephalitis (EM) in non-permissive hosts (e.g., mice). It has been shown that differences exist in the brains of permissive and non-permissive hosts during the larval development of A. cantonensis, however, the mechanism underlying the difference is not completely understood...
September 27, 2017: Journal of Parasitology
https://www.readbyqxmd.com/read/28950910/stimulation-of-il-1%C3%AE-and-il-6-through-nf-%C3%AE%C2%BAb-and-sonic-hedgehog-dependent-pathways-in-mouse-astrocytes-by-excretory-secretory-products-of-fifth-stage-larval-angiostrongylus-cantonensis
#3
Kuang-Yao Chen, Lian-Chen Wang
BACKGROUND: Angiostrongylus cantonensis is an important causative agent of eosinophilic meningitis and eosinophilic meningoencephalitis in humans. Previous studies have shown that the Sonic hedgehog (Shh) signaling pathway may reduce cell apoptosis by inhibiting oxidative stress in A. cantonensis infection. In this study, we investigated the relationship between cytokine secretion and Shh pathway activation after treatment with excretory/secretory products (ESP) of fifth-stage larval A...
September 26, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28947512/closing-the-brief-case-angiostrongylus-cantonensis-eosinophilic-meningitis-in-a-returned-traveler
#4
EDITORIAL
Kunatum Prasidthrathsint, Julia Lewis, Marc Roger Couturier
No abstract text is available yet for this article.
October 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28947508/the-brief-case-angiostrongylus-cantonensis-eosinophilic-meningitis-in-a-returned-traveler
#5
EDITORIAL
Kunatum Prasidthrathsint, Julia Lewis, Marc Roger Couturier
No abstract text is available yet for this article.
October 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28930003/angiostrongylus-cantonensis-eosinophilic-meningitis-in-an-infant-tennessee-usa
#6
Tim Flerlage, Yvonne Qvarnstrom, John Noh, John P Devincenzo, Arshia Madni, Bindiya Bagga, Nicholas D Hysmith
Angiostrongylus cantonensis, the rat lungworm, is the most common infectious cause of eosinophilic meningoencephalitis worldwide. This parasite is endemic to Southeast Asia and the Pacific Islands, and its global distribution is increasing. We report A. cantonensis meningoencephalitis in a 12-month-old boy in Tennessee, USA, who had not traveled outside of southwestern Tennessee or northwestern Mississippi.
October 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/28859686/the-genetic-variation-of-angiostrongylus-cantonensis-in-the-people-s-republic-of-china
#7
Shan Lv, Yi Zhang, Peter Steinmann, Jürg Utzinger, Xiao-Nong Zhou
BACKGROUND: The People's Republic of China (P.R. China) is the presumptive home range of the rat lungworm Angiostrongylus cantonensis, a major aetiological agent of human eosinophilic meningitis. We present a study of the genetic variation of A. cantonensis in P.R. China. Our aim was to deepen the current knowledge pertaining to its origin and global spread from a molecular perspective. METHODS: Adult A. cantonensis were collected in the frame of a national survey and identified based on morphological criteria...
September 1, 2017: Infectious Diseases of Poverty
https://www.readbyqxmd.com/read/28827809/phylogeography-of-angiostrongylus-cantonensis-nematoda-angiostrongylidae-in-southern-china-and-some-surrounding-areas
#8
Jian Peng, Zhang-Ping He, Shuai Zhang, Zhao-Rong Lun, Zhong-Dao Wu, Chia-Kwung Fan, Christopher L Brown, Po-Ching Cheng, Shih-Yi Peng, Ting-Bao Yang
Angiostrongylus cantonensis is of increasing public health importance as the main zoonotic pathogen causing eosinophilic meningitis or meningoencephalitis, which has been documented all over the world. However, there are very limited studies about its phylogeography and spread pattern. In the present study, the phylogeography of A. cantonensis in southern China (including Taiwan) and partial areas of Southeast Asia were studied based on the sequences of complete mitochondrial cytochrome b (Cytb) gene. A total of 520 individuals of A...
August 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28802946/effects-of-experimental-angiostrongylus-cantonensis-infection-on-the-reproductive-biology-of-biomphalaria-straminea-and-biomphalaria-tenagophila
#9
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
#10
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
#11
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
#12
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
#13
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
#14
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
#15
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
#16
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
#17
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
#18
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
#19
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
#20
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
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